Hydro Jet Blasting

Hydro jetting and Hydro blaster equipment is used to direct high pressure streams of water against a surface to clean or cut the material. The steams of water released by hydro jetting and hydro blasting equipment can exceed 10,000 psi. hydro jetting and hydro blaster equipment is used for cleaning or demolition of products made of metal, wood, concrete, stone, plastic, glass or other building materials.

Specific components within a hydro jetting or hydro blaster equipment system include abrasive injectors, pressure generators, blast cabinets or booths, water guns, and water tanks. Plunger-type intensifier pumps are commonly used to generate high pressure water for water jet cutting, wet or water abrasive blasting and non-abrasive pressure washing or rinsing. Crankshaft driven plunger pumps are also used for pressure generation.

Usually crankshaft driven plunger pumps may be more efficient in electrical energy costs compared to intensifiers, but at high pressures (>20,00 psi, 137 bar) seals must be periodically replaced. Crankshaft driven plunger pumps also provide a virtually ripple free pressure source in comparison to intensifiers. An accumulator may be required to smooth out pressure fluctuations if an intensifier pump is used. In air based blast or jet systems, air compressors are typically used to generate pressure which add heavy running cost.

Water guns or lances are the apparatus within hydro jetting and hydro blaster equipment that directs the stream of water through a nozzle and at the appropriate region of the work piece.

The water tank or hopper is used for storage of water, cleaning agents, blasting media or abrasive-water slurry mixtures.

reference from: hydrojet equipment

Sheet Metal

Sheet metal is simply metal formed into thin and flat pieces. It is one of the fundamental forms used in metalworking, and can be cut and bent into a variety of different shapes. Countless everyday objects are constructed of the material. Thicknesses can vary significantly, although extremely thin thicknesses are considered foil or leaf, and pieces thicker than 6 mm (0.25 in) are considered plate.

Sheet metal is available in flat pieces or as a coiled strip. The coils are formed by running a continuous sheet of metal through a roll slitter.

The thickness of the sheet metal is called its gauge. The gauge of sheet metal ranges from 30 gauge to about 8 gauge. The larger the gauge number, the thinner the metal.

There are many different metals that can be made into sheet metal, such as aluminum, brass, copper, steel, tin, nickel and titanium. For decorative uses, important sheet metals include silver, gold, and platinum (platinum sheet metal is also utilized as a catalyst.)

Sheet metal has applications in car bodies, airplane wings, medical tables, roofs for buildings and many other things. Sheet metal of iron and other materials with high magnetic permeability, also known as laminated steel cores, has applications in transformers and electric machines. Historically, an important use of sheet metal was in plate armor worn by cavalry, and sheet metal continues to have many decorative uses, including in horse tack.

Commutator Electric

A commutator is a rotary electrical switch in certain types of electric motors or electrical generators that periodically reverses the current direction between the rotor and the external circuit. In a motor, it applies power to the best location on the rotor, and in a generator, picks off power similarly. As a switch, it has exceptionally long life, considering the number of circuit makes and breaks that occur in normal operation.

A commutator is a common feature of direct current rotating machines. By reversing the current direction in the moving coil of a motor's armature, a steady rotating force (torque) is produced. Similarly, in a generator, reversing of the coil's connection to the external circuit provides unidirectional—direct—current to the external circuit. The first commutator-type direct current machine was built by Hippolyte Pixii in 1832, based on a suggestion by André-Marie Ampère.

What does CCCW stand for?

A sample of CCCW application - heat exchanger

What does CCCW stand for? CCCW stand for Closed Circuit Cooling Water. The reason in a power plant that have CCCW is for heat rejection system, which extracts waste heat to the atmosphere though the cooling of a water stream to a lower temperature.

Load Rejection Tests

Load Rejection Tests

A full series of load rejection tests should be performed and the results documented. These tests should include all conditions that can occur during the full range of operation. The data from these tests are needed to determine the maximum and minimum operating pressures and unit speeds.

Based upon data obtained from the hydraulic transient analysis, stop nuts on the governor main distributing valve servomotor are then set to limit the full rate opening and closing times of the wicket gates with the turbines unwatered, the governor in "main valve," and the shutdown solenoids blocked in the running position. Rapid operation of the gate limit between 0 and 100 percent will then cause the gates to operate at maximum rate. Experience has indicated that full rate closure under actual operating conditions tends to be about 10 percent faster than the unwatered setting.

To set the gate timing accurately, the stopwatch has been replaced with a position transducer attached to the servomotor and a strip chart recorder. Minimum test equipment for the load rejection tests, if required to verify the computer model, includes:

• Results of the hydraulic transient study to allow safe initial adjustments.
• Pressure transducers on the penstock and/or spiral case.
• A tachometer to measure unit overspeed.
• A position transducer on the wicket gates.
• A voltage transducer to measure the generator voltage transient.
• A strip chart recorder with at least 4 channels.

iPhone 4S Became Apple's Best-Selling iPhone Ever

iPhone 4S Became Apple's Best-Selling iPhone Ever since Apple has sold more than 4 million unit within 3 days. It was sold in Jepun, Australia, Perancis, United Kingdom, Kanada, Jerman and Amerika Syarikat started last 14th Oct.

Electric Motor

An electric motor converts electrical energy into mechanical energy.

Most electric motors operate through the interaction of magnetic fields and current-carrying conductors to generate force. The reverse process, producing electrical energy from mechanical energy, is done by generators such as an alternator or a dynamo; some electric motors can also be used as generators, for example, a traction motor on a vehicle may perfom both tasks. . Electric motors and generators are commonly referred to as electric machines.

Electric motors are found in applications as diverse as industrial fans, blowers and pumps, machine tools, household appliances, power tools, and disk drives. They may be powered by direct current (e.g., a battery powered portable device or motor vehicle), or by alternating current from a central electrical distribution grid or inverter. The smallest motors may be found in electric wristwatches. Medium-size motors of highly standardized dimensions and characteristics provide convenient mechanical power for industrial uses. The very largest electric motors are used for propulsion of ships, pipeline compressors, and water pumps with ratings in the millions of watts. Electric motors may be classified by the source of electric power, by their internal construction, by their application, or by the type of motion they give.

The physical principle of production of mechanical force by the interactions of an electric current and a magnetic field was known as early as 1821. Electric motors of increasing efficiency were constructed throughout the 19th century, but commercial exploitation of electric motors on a large scale required efficient electrical generators and electrical distribution networks.

Some devices convert electricity into motion but do not generate usable mechanical power as a primary objective and so are not generally referred to as electric motors. For example, magnetic solenoids and loudspeakers are usually described as actuators and transducers, respectively, instead of motors. Some electric motors are used to produce torque or force.

ABB Bailey Infi 90 DCS Card

From alibaba.com

ABB Bailey Infi 90 DCS Card

These are samples I got from internet...

Magnehelic Pressure Gauge Series 2000

Mounting. A single case size is used for most ranges of Magnehelic gages. They can be flush or surface mounted with standard hardware supplied. With the optional A-610 Pipe Mounting Kit they may be conveniently installed on horizontal or vertical 1 1/4" - 2" pipe. Although calibrated for vertical position, many ranges above 1 inch may be used at any angle by simply re-zeroing.

However, for maximum accuracy, they must be calibrated in the same position in which they are used. These characteristics make Magnehelic gages ideal for both stationary and portable applications. A 4 9/16" hole is required for flush panel mounting. Complete mounting and connection fittings plus instructions are furnished with each instrument.

PHYSICAL DATA

• Ambient temperature range: 20° to 140° F.*
• Rated total pressure: -20" Hg. to 15 psig.+
• Overpressure: Relief plug opens at approximately 25 psig
• Connections: 1/8"' NPT female high and low pressure taps duplicated - one pair side and one pair back.
• Housing: Die cast aluminum. Case and aluminum parts Iridite-dipped to withstand 168 hour salt spray test. Exterior finish is baked dark gray hammerloid.
• Accuracy: Plus or minus 2% of full scale (3% on - 0 and 4% on - 00 ranges), throughout range at 70°F.
• Standard accessories: Two 1/8" NPT plugs for duplicate pressure taps, two 1/8" pipe thread to rubber tubing adapter and three flush mounting adapters with screws. (Mounting and snap ring retainer substituted for 3 adapters in MP & HP gage accessories.)
• Weight: 1 lb. 2 OZ.
• * Low temperature models available as special option.
• + For applications with high cycle rate within gage total pressure rating next higher rating is recommended. See Medium and High pressure options lower left.

More details will be written later.

Diaphragm Type Differential Gauges

Model 130

DP Range 130: 0-5" H20
(0-12.4 mbar) thru 0-400" H2O (0-1 bar)

• Total separation of high and low by a convoluted elastomer diaphragm.
• Sensor magnetically coupled to the indicating pointer and optional switches.
• Suitable for use on virtually all reasonably clean liquids or gases.
• Over-range protection to full rated working pressure.
• Diaphragm design allows use of dissimilar fluids on high and low side of gauge.
• Can be used with vacuum or pressure applications
• Weatherproof rated to NEMA 4X/IP65.
• Body Materials: Glass Reinforced Engineered. Plastic, Aluminum, 316L Stainless Steel & Brass
• Working Pressure: 300 PSIG Glass Reinforced Plastic Body
• Working Pressure: 500 PSIG Aluminum, Brass and 316 S.S. Bodies
• Shatter resistant lens.
• 4-1/2" Round Engineered Plastic Dial Housing Assy. (Standard)
• Operating Temp. -40º F to +200º F (-40ºC to +93ºC)
• DP Ranges available in: Inches H2O, PSID, mbar, and Kpa
• Also available with Square Root dials for flow measurement

The low range capability of the Model 130 is ideally suited for flow, liquid level and vacuum applications. Magnetic coupling between the sensing element and the indicating pointer provides for complete isolation of the process fluid within the pressure capsule. The few internal metal parts are 316L Stainless Steel.

Common Applications: Tank Level Monitoring Horizontal or Vertical Flow, Liquid Level, Indication/Balancing, Filter Monitoring for Gases, Water Treatment Applications and Vacuum Application.

Generator Stator Rewedging

Generator Stator winding

Stator wedges

Stator core

Thin Layer Electrical Metal Steel

General info on stator core

The stator core has an internal diameter of 4630 mm and a length of 2250 mm. It is
built up from segmental laminations punched from high grade, cold reduced, electrical
sheet steel, which are held in the frame by dovetailed keybars. The laminations are
divided into 59 layers (packets) formed by narrow steel spacers which provide
ventilating ducts leading from the stator bore to the periphery of the core.

Stator winding

The stator winding is of the double layer lap type, each layer comprising 64
conductors (32 deep by 2 wide) and each conductor being 2.24 mm x 5.8 mm glass
laminate covered copper strip. The conductors are transposed within the slot length
to inhibit circulating currents between

Stator wedge plate layers.


The two layers (bars) are wound and packed into the open core slots. The top and
bottom bars are spaced apart by a separator and retained in the slots by wedges

Dry ice blasting on the stator

Dry ice blasting on the stator

Dry ice blasting is a form of abrasive blasting, where dry ice, the solid form of carbon dioxide, is accelerated in a pressurized air stream and directed at a surface in order to clean it. Dry ice blasting leaves no chemical residue as dry ice sublimates at room temperature.

Objective: To remove dirt and unwanted contaminants on the stator core. This process also removes the varnish stain on the stator core.

Working principles:

Dry ice blasting machine

Dry ice blasting is a form of abrasive blasting, where dry ice, the solid form of carbon dioxide, is accelerated in a pressurized air stream and directed at a surface in order to clean it. Dry ice blasting leaves no chemical residue as dry ice sublimates at room temperature.

Dry ice blasting involves propelling pellets at extremely high speeds. The actual dry ice pellets are quite soft, and very less dense. Upon impact, the pellet sublimates almost immediately, transferring minimal kinetic energy to the surface on impact and producing minimal abrasion.

Dry ice blasting - air compressor

The sublimation process absorbs a large volume of heat from the surface, producing shear stresses due to thermal shock. This is assumed to improve cleaning as the top layer of dirt or contaminant is expected to transfer more heat than the underlying substrate and flake off more easily. The efficiency and effectiveness of this process depends on the thermal conductivity of the substrate and contaminant.

Magnehelic Gauge. What Is A Magnehelic Gauge?

Mahnehelic Gauge
What Is A Magnehelic Gauge

A magnehelic pressure gauge is a device, similar to a manometer, used to measure positive, negative and differential pressures. These gauges are often used in the HVAC industry to measure pressure drop across air filters to determine when it is time for them to be changed.

Although magnehelic gauges are resistant to shock and vibration, they are extremely sensitive and accurate. Calibration is very easy due to the zero calibration screw located on the plastic cover. Although Dwyer makes gauges in about thirty different pressure ranges, the most common ranges are 0 to 0.5 in, w,g. (25 Pa), 0 to 1.0 in. w.g. (250 Pa), and 0 to 5.0 in. w. g. (1250 Pa). They consist of a die cast aluminum case and bezel with an acrylic cover. Magnehelic gauge accuracy is typically + or – 2%.

If you want to know more details, please go to the Magnehelic Gauge web.

Stator

The stator is the stationary part of a rotor system, found in an electric generator, electric motor and biological rotors.

Depending on the configuration of a spinning electromotive device the stator may act as the field magnet, interacting with the armature to create motion, or it may act as the armature, receiving its influence from moving field coils on the rotor.

The first DC generators (known as dynamos) and DC motors put the field coils on the stator, and the power generation or motive reaction coils on the rotor. This was necessary because a continuously moving power switch known as the commutator is needed to keep the field correctly aligned across the spinning rotor. The commutator must become larger and more robust as the current increases.

The stator of these devices may be either a permanent magnet or an electromagnet. Where the stator is an electromagnet, the coil which energizes it is known as the field coil or field winding.

An AC alternator is able to produce power across multiple high-current power generation coils connected in parallel, eliminating the need for the commutator. Placing the field coils on the rotor allows for an inexpensive slip ring mechanism to transfer high-voltage, low current power to the rotating field coil.

It consists of a steel frame enclosing a hollow cylindrical core (made up of laminations of silicon steel). The laminations are to reduce hysteresis and eddy current losses.

Bakun - Fast facts

FAST FACTS

The Bakun Hydroelectric Dam is the second highest concrete faced rockfill dam in the world.

Bakun dam is 207 metres high with a reservoir surface area of nearly 70,000 hectares, about the size of Singapore.

The main civil works began in 2002 by Malaysia-China Hydro Joint Venture.

A workforce of just over 3000 are on site at the peak of construction activity.

Experts, engineers, specialists and consultants worldwide are involved in this mega-project.

Upon completion, the Bakun Dam will generate 2400MW of clean electricity.

Bakun Dam is emission-free and has a 0% impact on global warming.

Activer Repeater for T24 Wireless Telemetry (T24-AR)

* Wireless Active Repeater module to increase or extend range and overall coverage
* Allows T24 telemetry transmission to span around obstacles such as buildings or walls, etc.
* IP65 rated NEMA4 protected
* Integrated PCB antenna
* Simple configuration via PC using base station & T24 Toolkit software
* Battery power supply or external power supply
* 1 year manufacturer’s warranty

Bently Nevada System One Software Applications

Bently Nevada System One Software Applications

New System 1 Bundling System 1 for Power Generation
Our new condition monitoring platform System 1 for Power Generation is a pre-licensed System 1 package (point size and interfaces) that is designed to meet the needs of power generators.
Application Packages

Application Packages provide the ability to view the plots relevant to a specific type of asset or application. There are a number of software packages available that address many of our customers' most often-requested applications.

Lubricant Analysis Data Import

Bently Nevada System 1 Lubricant Analysis Data Import Application Package allows customers to work with their existing labs to receive lubricant analysis data in a “.csv” (or Excel) format that we have defined for easy lubricant data import into System 1. Once the data is in system 1, general trending, easy correlation of lubricant analysis data with other condition monitoring data, alarm and event trigger configurations, and Decision Support rules can be performed and implemented to provide a better overall picture of machinery health and to help make better decisions regarding plant performance. Correlating lube data with other condition monitoring and process readings reduces missed failures and enables optimization of overall maintenance expenses with minimized negative impact to from an equipment failure mode.

System Extenders

System Extender modules are designed to work in conjunction with one or more types of System 1 applications, providing extended functionality applicable to a particular asset type, data collection method, or optimization task. Available System Extender modules include:

Dry Gas Seal Monitoring

The Dry Gas Seal System 1 RulePak enables customers to understand their seal health and take appropriate action ranging from “run to next outage” to “immediate shut down and repair. This new capability increases the ability to reduce process gas leakage during production runs and reduce flare events due to leakage. It also enables Condition Based Maintenance for compressor dry gas seal system and provides proactive advisories on the most common failure modes enabled at levels below control or protection alarms and trip setpoints. Additionally, machine availability is improved via more intelligent planned maintenance and fewer unexpected outages.

Corrosion and Erosion Monitoring

This extender detects and reports on piping system wall thickness, enabling you to trend and mitigate degradation from corrosion and erosion. Managing wall thickness and other fixed assets presents a costly challenge to most plants. Rightrax with the System 1 platform can integrate the most critical piping and vessel assets into a condition-based maintenance program. Such a program can typically produce a one year ROI based on moving time based inspection costs to an on-line condition monitoring infrastructure and management program.

GEnyus System 1® System Extender

Combines the domain expertise derived from an installed fleet of 6,500 GE Oil & Gas reciprocating compressors, with more than 40 years of Bently™ Nevada condition monitoring experience on recips, to create a powerful package that harnesses all of this knowledge – and available in a tightly integrated component of System 1 software.

Impulse/Impact Rulepak

Traditionally, protection bands from the Bently Nevada 3500/70M monitor and threshold alarms from other 3500 monitors alert users to the problem areas within these data sets. The Impact/Impulse RulePak builds on this proven foundation to provide powerful real-time analytics on your reciprocating compressor data, integrating synchronized pressure, load, and vibration measurements.

EAM/CMMS Interfaces

Interfaces to many of today's most common maintenance management platforms including:

* SAP** R/3** plant maintenance module
* MAXIMO** system from MRO Software and others

Decision Support

Allows users to generate and maintain their own custom rules for use by System 1's standard decision support and notification capabilities.
RulePaks

Pre-configured rules that embed GE mechanical diagnostic expertise for specific machinery types. Individual RulePaks are available for the following:

* Steam Turbines
* Reciprocating Compressors
* Industrial Gas Turbines
* Aeroderivative Gas Turbines
* Electric Motors and others

source: GE bently nevada web

Strain Gauge

Typical foil strain gauge. The gauge is far more sensitive to strain in the vertical direction than in the horizontal direction. The markings outside the active area help to align the gauge during installation.

A strain gauge is a device used to measure the strain of an object. Invented by Edward E. Simmons and Arthur C. Ruge in 1938, the most common type of strain gauge consists of an insulating flexible backing which supports a metallic foil pattern. The gauge is attached to the object by a suitable adhesive, such as cyanoacrylate.As the object is deformed, the foil is deformed, causing its electrical resistance to change. This resistance change, usually measured using a Wheatstone bridge, is related to the strain by the quantity known as the gauge factor.

Physical operation

A strain gauge takes advantage of the physical property of electrical conductance and its dependence on not merely the electrical conductivity of a conductor, which is a property of its material, but also the conductor's geometry. When an electrical conductor is stretched within the limits of its elasticity such that it does not break or permanently deform, it will become narrower and longer, changes that increase its electrical resistance end-to-end. Conversely, when a conductor is compressed such that it does not buckle, it will broaden and shorten, changes that decrease its electrical resistance end-to-end. From the measured electrical resistance of the strain gauge, the amount of applied stress may be inferred.

A typical strain gauge arranges a long, thin conductive strip in a zig-zag pattern of parallel lines such that a small amount of stress in the direction of the orientation of the parallel lines results in a multiplicatively larger strain over the effective length of the conductor—and hence a multiplicatively larger change in resistance—than would be observed with a single straight-line conductive wire. Strain gauges measure only local deformations and can be manufactured small enough to allow a "finite element" like analysis of the stresses to which the specimen is subject. This can be positively used in fatigue studies of materials.

Looking a Solar Panel for Bird's House

Found this on the net.

Product Description

Metec Solar power station is ranging from 20watts to 10KW.
50watts=50watts solar panel
10kw=10kw solar panel

OFF-GRID SOLAR power SYSTEM 1000W (can be changed into on-grid according customer needs)
Characteristics
1) Can provide electricity for6-8h/days
2) Can guarantee that two consecutive rainy days of normal power supply.
3) Solar modules for peak power: 1000 Wp.
4) The output voltage to: 220 VAC +10% (Or 115VAC +10%)
5) Max Peak Power in one days (6-8 Hours) 6000-8000W
6) The maximum power load for the system: 800 W.
7) Protection: Battery Charger Protection, Battery Low Voltage Protection, Overload Protection

Short Circuit Protection, Thermal Protection, Fault Indication Function
1000W solar system can power the following
20 Energy Saver Bulbs
1 Radio or CD/DVD player
4 Fan
1 Refrigerator
1 Desktop / Laptop
1 20" Colour TV

Major Component
1)10PCS* Solar Modules 100w 17.2V 5.81A Polycrystalline (Mono crystalline )
2)1set * Solar Charger Controller 12V/24V 50Amps
3)1set * Solar Inverter Pure Sine Wave 24V 1000W
4)12PCS* Deep Cycle Battery Maintenance-free 12V 100AH
5)1set* Cable, Connector

New ContiComfortContact CC5 - RM200 per tyre

I already changed 4 tires for my toyota car which total cost me at RM800.00. The replacement of new tires already included balancing and alignment work.

I changed it at Jalan Kapar Klang.

Now the problem is the alignment. Already went to 2 workshop to do alignment work but until now still not good. Not sure what is the root cause. But not because of the new tires.

Rotor

The rotor is the non-stationary part of a rotary electric motor, electric generator or alternator, which rotates because the wires and magnetic field of the motor are arranged so that a torque is developed about the rotor's axis. In some designs, the rotor can act to serve as the motor's armature, across which the input voltage is supplied. The stationary part of an electric motor is the stator. A common problem is called cogging torque.

Introduction to Pressure Transducers

Pressure Transducer

What is a pressure transducer? A pressure transducer is a transducer that converts pressure into an analog electrical signal. Although there are various types of pressure transducers, one of the most common is the strain-gage base transducer.

The conversion of pressure into an electrical signal is achieved by the physical deformation of strain gages which are bonded into the diaphragm of the pressure transducer and wired into a wheatstone bridge configuration. Pressure applied to the pressure transducer produces a deflection of the diaphragm which introduces strain to the gages. The strain will produce an electrical resistance change proportional to the pressure.

Electric Generator

In electricity generation, an electric generator is a device that converts mechanical energy to electrical energy. A generator forces electrons in the windings to flow through the external electrical circuit. It is somewhat analogous to a water pump, which creates a flow of water but does not create the water inside. The source of mechanical energy may be a reciprocating or turbine steam engine, water falling through a turbine or waterwheel, an internal combustion engine, a wind turbine, a hand crank, compressed air or any other source of mechanical energy.


Early 20th century alternator made in Budapest, Hungary, in the power generating hall of a hydroelectric station Early Ganz Generator in Zwevegem, West Flanders, Belgium

The reverse conversion of electrical energy into mechanical energy is done by an electric motor, and motors and generators have many similarities. In fact many motors can be mechanically driven to generate electricity, and very frequently make acceptable generators.

Benly Nevada System One Software

continue from last posting...

System 1® Software

System 1 Software
Condition Monitoring and Diagnostics Software Platform

Widely used across many industries, System 1 enables plant personnel to quickly identify important events, evaluate the situation, and respond, leading to increased equipment availability, reliability, and reduced maintenance costs. System 1 is GE Energy’s patented software platform for real-time optimization of equipment and selected processes, condition monitoring, and event diagnostics. Similar in concept to a process control system which allows users to understand, diagnose, and control their process conditions in real time, the System 1 platform provides this capability for the assets that drive your process.

Benefits


Increased safety
A single “miss” on safety or the environment can be disastrous. Proactive capabilities mean fewer, less severe mechanical failures that could impact people and the environment.

Improved reliability and availability
Healthy assets are assets you can depend on when they are needed. Problems can be identified and dealt with early in the progression of symptoms – before they translate to expensive downtime.

Optimized maintenance costs
System 1 helps you plan maintenance by allowing you to base decisions on actual condition – so you can fix only what really needs fixing and address problems when they are small and less expensive.

Lower energy costs
Energy costs are often a plant’s single largest operating expense. System 1 helps assess and correct the conditions that waste energy.

Fewer forced outages, less lost production
Even the most expensive repair and maintenance costs are often eclipsed by the enormous costs of lost or reduced production. System 1 can generally save one or more days of lost production due to mechanical failures in the first year alone, often paying for the entire system in a single “event.”

Increased thermal efficiency/optimized heat rate
System 1 can provide the information you need to understand and correct degradations in these important parameters, and optimize the balance between energy costs, maintenance costs, and production revenues – often translating to significant financial benefits.

Increased employee productivity
In today’s “lean” environment, people are already spread too thin. Instead of using people to hunt for problems, System 1 allows your people to work on identified problems, armed with relevant information on the identified symptoms and root causes.

Move data, not people
With its remote access capabilities, System 1 can reduce travel costs, minimizing the need for people to move from place to place collecting data, and leaving them extra time for completing more meaningful activities. Data can not only be collected remotely, it can be analyzed remotely, allowing users to more easily manage assets from various locations – whether across an entire globally dispersed enterprise, or simply another process unit elsewhere in the plant.

Easier collaboration
Key information can easily be shared between all relevant parties – employees, contractors, suppliers, or consultants – in real time. Enhanced collaboration means more relevant expertise can be applied to problems for faster, better resolution.

Faster response, reduced human variance
Abnormal situations can be stressful, making it difficult for people to respond both quickly and properly. System 1 delivers Actionable Information* advisories that tell your people exactly how to respond to events – you decide in advance and embed these details right in the software. Instead of deciding how to respond, personnel can respond with predetermined actions – and at the speed your business demands.

Features

Sophisticated alarm management
System 1 enables true “management by exception” with its sophisticated alarm handling capabilities for the entire enterprise, ensuring that only relevant events and alarms are delivered to your operations and other personnel. No more overwhelming alarm lists, nuisance alarms, and cryptic messaging with insufficient details – you control the level of attention given to each event, the type of notification, the people notified, and all other details.

Configurable data acquisition and storage resolution
Data capture can be individually configurable for each point and can be triggered by an event, by the state of another variable, by predetermined time intervals, or any combination of these parameters. “Dead band” capabilities ensure that data which is not changing within user-configurable limits for each point can be suppressed from storage – helping keep database sizes compact without missing important information and events or disrupting trend resolution.

Powerful analytic and diagnostic capabilities
Data can be manipulated and presented using an extensive library of tools and functions – data can even be exported to spreadsheets and imported again for special calculations. Advanced plot management tools – such as plot grouping – make it easy to create, save, access, and duplicate plots of common interest. Users can quickly see what happened before and after an event using intuitive “zoom in/zoom out” capabilities on plot time ranges.

Support for Virtual Private Network (VPN) technologies
VPN technologies are being increasingly used by many of our customers for accessing their corporate networks via a public Internet connection – without compromising security. System 1 fully supports this technology, providing the most convenient remote access capabilities we’ve ever been able to offer.

Fully customizable displays
Just as you configure and personalize your Windows® desktop, System 1 users can individually configure their display capabilities, ensuring that only those assets and portions of the enterprise relevant to them are presented.

Enhanced IT management and support capabilities
System 1* has been designed for highly secure and robust operation without the need for extensive support from your company’s Information Technology Department, while still providing powerful tools and capabilities for them to centrally manage the PCs across your enterprise.

One database
System 1 integrates numerous data sources into a single system, reducing the need for learning and maintaining multiple systems. Portable data collectors, online wired and wireless continuous and intermittent measurement systems, manually entered data and notes, and many other data sources – all are now brought together in a single system.

Highly scalable
Your System 1 implementation can start small and build through an architecture and pricing structure that has been deliberately designed for scalability and affordability. Pay for what you need today, add what you need tomorrow.

One user interface
System 1 accepts data from multiple sources but eliminates the need for learning and navigating multiple user interface environments – providing a consistent, intuitive look and feel for viewing data and information. When you need access to external systems and user interfaces, its built-in DocuView* features provide consistent, easy-to-use access to supplementary programs, data, drawings, documents, web pages, and any other information that you can link to from your computer.

Root cause analysis
System 1 provides unrivaled root cause diagnostic capabilities by allowing users to “drill down” and examine the sequence of events leading up to a problem, analyze the data using powerful graphical and tabular presentation formats, and then document this learning, either by posting notes in the database or by generating new rules, capable of automatically analyzing future events with the same root cause.

source: GE bently nevada web

Samsung Galaxy S 2 Hands-On

Samsung Galaxy S 2 Hands-On





General Specs:

1. 4.3″ SUPER AMOLED Plus
2. Samsung Dual Core Application Processor
3. World Thinnest 8.49mm Slim Design
4. HSPA+ 21Mbps
5. Wi-Fi Direct
6. AllShare
7. 8MP Camera with LED Flash
8. Full HD Recording & Playback
9. NFC (Near Field Communication)
10. Game Hub, Social Hub, Music Hub, Readers Hub

10 days to go for registration - Asean Elenex 2011 & Industrial Automation 2011

ASEAN Elenex 2011 (AE 2011) and Industrial Automation 2011 (IA 2011) will be held from 20 – 23 July 2011 at Kuala Lumpur Convention Centre. This would be an ideal business sourcing platform of Transmission & Distribution and Electrical Engineering as well as the Manufacturing Industry.

Those who want the details can click at my last post on this exhibition below:

ASEAN Elenex 2011

Ball Pressure Gauge

Tachikara GAUGE Ball Pressure Gauge. Price is around $12.95

Atmospheric pressure

Atmospheric pressure is the force per unit area exerted against a surface by the weight of air above that surface in the Earth's atmosphere. In most circumstances atmospheric pressure is closely approximated by the hydrostatic pressure caused by the weight of air above the measurement point. Low pressure areas have less atmospheric mass above their location, whereas high pressure areas have more atmospheric mass above their location.

Similarly, as elevation increases there is less overlying atmospheric mass, so that pressure decreases with increasing elevation. A column of air one square centimetre in cross-section, measured from sea level to the top of the atmosphere, has a mass of about a kilogram and a weight of 63N (and a column one inch in cross-section would weigh about 14 lb).

ContiComfortContact CC5

Conti ComfortContact CC5

Noise Breaker

Feature
Noise Breaker from Conti Silent Tread Pattern Groove Technology

Effect
Breaks air-waves in longitudinal grooves

Benefit
Reduces noise without compromising other performances

Comfortable tyre

Feature
V-Shaped Siped inner ribs

Effect
Smooth rolling throughout the tyre circumferential

Benefit
Optimum driving comfort coupled with optimum safety performance

Fuel Saving

Feature
Advanced Silica Compound Technology

Effect
Minimized rolling resistance forces for better fuel efficiency and also lower CO2 emissions

Benefit
Improve fuel economy

I found this tyre for my toyota still making noise. The price rougly cost me around RM200 per tyre.

New ContiComfortContact CC5

Conti ComfortContact CC5

Noise Breaker

Feature
Noise Breaker from Conti Silent Tread Pattern Groove Technology

Effect
Breaks air-waves in longitudinal grooves

Benefit
Reduces noise without compromising other performances

Comfortable tyre

Feature
V-Shaped Siped inner ribs

Effect
Smooth rolling throughout the tyre circumferential

Benefit
Optimum driving comfort coupled with optimum safety performance

Fuel Saving

Feature
Advanced Silica Compound Technology

Effect
Minimized rolling resistance forces for better fuel efficiency and also lower CO2 emissions

Benefit
Improve fuel economy

Riger DB108-wl wireless ADSL modem 2/2+

Product Features

* No computer resource occupation, downstream 24Mbps, upstream 1Mbps, switch able to ADSL2/2+
* Routing from WAN to LAN
* Support 1483 Bridge, PPPoA and PPPoE
* Support up to 254 simultaneous user
* Web-based GUI
* Embedded software for connection status real-time supervision
* Comply with main DSLAMs
* Easy Installation with Smart Configuration
* Tested with All 18 TM DSLAM
* Lightning Protector Circuit.
* SIRIM Approved, TM Approved and TM R&D Approved
* Web-based Configuration and monitoring
* Software upgradeable
* Universal Plug and Play (UpPnP)
* Firewall, IP Filter, Parental Control

Specifications and Standards

Supported Protocols

* RFC 2364 PPP over ATM AAL5 (PPPoA)
* RFC 2516 PPP over Ethernet relay ( PPPoE)
* RFC1483 LLC&VCMUX (bridge and routing mode) multi-protocol encapsulation over ATM AAL5
* RFC 1577 classical IP and ARP over ATM
* ATM AAL5 UBR&CBRR
* Supports ADSL, ADSL2 and ADSL2+, up to 24Mbps
* Supports IEEE802.11b/g 54Mbps Wireless
* Support diagnostic function

ASEAN ELENEX 2011 & INDUSTRIAL AUTOMATION 2011 SHOWING THIS JULY!

ASEAN ELENEX 2011 & INDUSTRIAL AUTOMATION 2011 SHOWING THIS JULY!

ASEAN Elenex 2011 (AE 2011) and Industrial Automation 2011 (IA 2011) will be held from 20 – 23 July 2011 at Kuala Lumpur Convention Centre. This would be an ideal business sourcing platform of Transmission & Distribution and Electrical Engineering as well as the Manufacturing Industry.

Comprising over 7,000 sq. metres of gross exhibition space, occupied by more than 400 participation companies from 29 nations, AE 2011 & IA 2011 are shows not to be missed. Some of these key industry players include Ancom, Electrical Components, Infrakomas, Megalux Lightings, Mikro, Ulusoy Electric, United U-Li Corporation Berhad, Delta Mechatronic Malaysia, Edex, Harting KGAA, KVC Industrial Supplies, Lenze, Metalworking Asia, National Instruments, Rockwell, SIEMENS and many more.

At AE 2011 & IA 2011, we will also see German and Romanian Country pavilions as well as industry pavilions from Tenaga Nasional Berhad (BVDP) and The Electrical & Electronics Association of Malaysia (TEEAM). A group from China will also be participating.

We are expecting more than 8,000 trade visitors over the 4-day period. Why not be one of the first to pre-register and enjoy the benefits of pre-booking your visitor badge! All you have to do is Pre – Register by clicking HERE and obtain your visitor badge from the dedicated “Pre-Reg counters” at the exhibition for hassle free entrance and yes a COMPLIMENTARY copy of the AE & IA 2011 Show Directory is all yours.

Don’t miss this opportunity and pre-register online today!

Deadline for pre-registration is on the 18th July 2011.

Show Opening Hours
20 - 22 July 2011
10:00am - 6:00pm

23 July 2011
10:00am - 5:00pm


CONFERENCE

A 2-day conference will be held on the 21st & 22nd July 2011. There will be two different conferences happening at the same time catering to the related industry products and services. One will be the CIRED's "SMART GRID" Conference and the other is the Energy Commission's "National Level Electrical Safety Seminar". Details of the above mention conference are as follows:


1.CIRED's "SMART GRID" conference

Date: 21st and 22nd July 2011

Venue: Plenary Theatre, KLCC

Estimated: 300 delegates

Person in charge: Zurina Manaf

TNB unit wins job in Pakistan

It seals RM43mil operation and maintenance agreement with Laraib Energy

KUALA LUMPUR: Tenaga Nasional Bhd's (TNB) unit TNB Repair and Maintenance Sdn Bhd (TNB Remaco) has secured an operation and maintenance agreement worth US$14.1mil (RM43mil) from Pakistan's Laraib Energy Ltd.

TNB Remaco will be the operator of the 84MW New Bong Escape Hydroelectric Power Complex on the Jhelum River in Azad Jammu and Kashmir.

“Under the contract, TNB Remaco will provide services for an initial period of five years with an option of extending for another seven years,” president/chief executive officer Datuk Seri Che Khalib Mohamad Noh said at the signing ceremony between TNB Remaco and Laraib Energy yesterday.

Khalib who is also the chairman of TNB Remaco said the 15-month mobilisation period was expected to commence in August.
Technical tie-up: Khalib (left) exchanging documents with Harris. With them are (from left) Energy, Water and Communications MInistry deputy secretary-general Badaruddin Mahyuddin and Pakistani Deputy High Commissioner Imtiaz A. Kazi. - Starpic by Rohaizat bin Md Darus

TNB Remaco will provide technical personnel and skilled expertise to perform daily operations as well as routine maintenance of the complex.

“This new agreement marks TNB Remaco's second collaboration with HUB Power Co (a major shareholder of Laraib Energy). The first being the operation and maintenance agreement for the 213.6MW diesel and co-generation power plant in Punjab, Pakistan,” said Khalib.

He said the agreement would further augment TNB Remaco's reputation as a one-stop service provider for power-related works and also identified TNB Remaco's repair centre as a regional repair hub, in line with TNB's aim to be a global brand.

Laraib Energy's chairman and Hub Power Co's chief executive officer Vince Harris said the company had invested some US$235mil on the hydroelectric power plant and it was well advanced in commercialisation.

He described the 84MW hydroelectric plant as a “major infrastructure project.”

Harris said TNB Remaco won the job as the group was confident with its capability and expertise.

Khalib said the company was “looking” at various opportunities for maintenance job including in Indonesia and Brunei.

He said TNB Remaco's strategy was to provide services and not buying assets.

TNB Remaco managing director Nor Azman Mufti said the group aimed to increase its overseas' revenue contribution to 40% from 10% currently.

Khalib said TNB had been working closely with the Government on the negotiation with independent power purchasers (IPP). “We look forward for the positive outcome of the negotiation with IPPs.”

He, however, declined to reveal details of the negotiations. “The details are best answered by the Government.”

Meanwhile, Khalib said TNB would not be extending its power purchase with PowerSeraya Ltd, a unit of YTL Power International Bhd when it expired on June 15.

“At the moment there's no need to extend it. We will only know if we need to purchase from Singapore at the next curtailment at the end of the month whereby Petroliam Nasional Bhd-owned gas production platform will undergo maintenance work,” he said.

Khalib said the purchase represented only 1% of total demand. He explained that TNB was buying power across the border for security reason and it was normal for any utility company to make such purchases.

“We have managed to pull through in the past two major curtailment. We're confident to pull it through this time as well,” he said, adding that there was no shortage of power supply and it had an excess capacity of 40% currently.

Bently Nevada System One Software

System 1® Software

System 1 Software
Condition Monitoring and Diagnostics Software Platform

Widely used across many industries, System 1 enables plant personnel to quickly identify important events, evaluate the situation, and respond, leading to increased equipment availability, reliability, and reduced maintenance costs. System 1 is GE Energy’s patented software platform for real-time optimization of equipment and selected processes, condition monitoring, and event diagnostics. Similar in concept to a process control system which allows users to understand, diagnose, and control their process conditions in real time, the System 1 platform provides this capability for the assets that drive your process.

Source: Ge bently nevada

New Myvi 2011 - Specifications and prices

New Myvi 2011 - Specifications and prices

1.3 SX STANDARD
On the road price RM 43,900
Monthly payment 9 years RM 480.95

1.3 EZ STANDARD
On the road price RM 46,900
Monthly payment 9 years RM 513.82

1.3 SXI PREMIUM
On the road price RM 46,900
Monthly payment 9 years RM 513.82

1.3 EZI PREMIUM
On the road price RM 49,900
Monthly payment 9 years RM 546.70

1.3 SXE ELEGANCE
On the road price RM 53,900
Monthly payment 9 years RM 590.53

1.3 EZE ELEGANCE
On the road price RM 56,900
Monthly payment 9 years RM 623.41

more details: perodua

VEGACAL 62

VEGACAL 62

Capacitive rod electrode for continuous level measurement

Application area
VEGACAL 62 is a level sensor for continuous level measurement in all areas of industry. Partly insulated probes such as VEGACAL 62 are preferably used in bulk solids. However, the probe can also be used in non-conductive liquids such as e.g. oil.

Advantages
Service-proven, robust and maintenance-free
High reliability
Simple mounting and setup
Measurement along the complete probe length
Probe can be shortened

Function
Sensor and vessel form the two electrodes of a capacitor. A level change causes a capacitance change which is converted into a continuous output signal by the connected processing electronics.

Version with partly insulated rod
Process fitting from G¾ A
Process temperature -50 … +200 °C
Process pressure -1 … +64 bar
(-100 … +6400 kPa)

source: Vega

Samsung Galaxy Tab - All The Great Features (Official Promo Video) [HD]

Samsung Galaxy Tab is loaded with superb cool features, and is going to give the iPad a real tough fight. The widgets interface is specifically neat!
The video shows other features, all titled under the "It's Go Time" slogan.
For more check out http://galaxytab.samsungmobile.com

Features presented:
- Widgets (probably the highlight feature of Android so far)
- Google maps navigation
- Music & Videos portal
- Emails
- 4 e-books apps (very cool)
- 32GB SD memory slot (yes! finally a freedom from storage tyranny)
- Stream to any monitor (yet another neat capability)
- 7 Hours battery life
- Front webcam for video chat
- Adobe Flash support for games and apps (well, surely that you won't have on the iPad).

http://youtu.be/tHOZZJ_2Wjg?hd=1

Motorola Xoom - Android 3.0 Tablet

Motorola Zoom - Android 3.0 Tablet

Motorola Xoom Spec

OS Android 3.0 (Honeycomb)
Dimensions 249.1mm (h) x 167.8mm (w) x 12.9mm (d)
Display 10.1 inches 1280×800 resolution
Resolution 1280×800
Weight 730g
Processor 1GHz Dual-core processor NVIDIA Tegra 2
Battery Up to 10 hour video playback
Connectivity 3.5mm, micro USB 2.0 HS, Corporate Sync, Wi-Fi 2.4GHz & 5GHz 802.11b/g/n, Bluetooth 2.1 + EDR + HID
Network 3G, 4G LTE upgradeable, 802.11n w/Personal Hotspot
Messaging/Web/Apps Email (Corporate Sync, Google Mail, POP3/IMAP embedded, Push Email, Yahoo Mail) , WebKit w/ Flash
Audio AAC, AAC+, AMR NB, AMR WB, MP3, XMF
Video 720p capture/1080p playback/streaming, H.263, H.264, MPEG4
Camera 5 MP rear-facing camera with dual LED flash and 2MP front-facing camera
Memory 32GB on board user memory, SD card support after software update, 1GB DDR2 RAM
RAM 1GB DDR2
Input Touch Screen with pinch-to-zoom navigation

DECT MAL B100

Features for DECT MAL B100

• Large LCD display for easier viewing
• 1-line 14 segment alphanumeric display with 2-line icons
• Menu driven MMI
• Ringtone assignment
• Full duplex handset speakerphone (optional)
• Polyphonic ring tones (associates with speakerphone option)
• 20 phonebook entries
• ECO Mode (Phase II)
• Standard 13 fixed languages (Optional with additional Max. 3 Flexible)
• 5 out-going calls log
• 10 in-coming calls log
• GAP compliant
• Alarm with snooze
• Expandable up to 5 handsets

Price is around RM20.00. Last time I was in Perak and bought this phone at TM Point.

Process pressure: Level and pressure measurements

Measuring principle

The pressure measuring cell converting the pressure into a signal which can be evaluated electrically is the heart of the pressure transmitter. This pressure-dependent signal is converted by the integrated electronics into a standardized output signal. Different sensors are used to detect the pressure. The ceramic cell characterizes by an excellent long-term stability and high overload resistance. The metal cell covers even higher measuring ranges and use stainless steel as diaphragm material.

For all areas of industry

VEGABAR series 60

VEGABAR series 60 meets all the requirements placed on suspension pressure transmitters. Excellent measuring precision, overload resistance, temperature stability and corrosion resistance are the essential criteria that it satisfies. In conjunction with application-optimized housing versions and electronics, these suspension pressure transmitters are ideal for use in rough environments.
Especially the front-flush, abrasion resistant CERTEC® with its double seal system offers high reliability and operational safety.

For gauge measurements

Vegawell

These suspension pressure transmitters are designed for gauge measurement in water/waster applications. Different housing materials in combination with different cable materials offer all necessary options.

source: Vega

Plate heat exchanger

A plate heat exchanger is a type of heat exchanger that uses metal plates to transfer heat between two fluids. This has a major advantage over a conventional heat exchanger in that the fluids are exposed to a much larger surface area because the fluids spread out over the plates. This facilitates the transfer of heat, and greatly increases the speed of the temperature change. Plate heat exchangers are now common and very small brazed versions are used in the hot-water sections of millions of combination boilers. The high heat transfer efficiency for such a small physical size has increased the domestic hot water (DHW) flowrate of combination boilers. The small plate heat exchanger has made a great impact in domestic heating and hot-water. Larger commercial versions use gaskets between the plates, smaller version tend to be brazed.

The concept behind a heat exchanger is the use of pipes or other containment vessels to heat or cool one fluid by transferring heat between it and another fluid. In most cases, the exchanger consists of a coiled pipe containing one fluid that passes through a chamber containing another fluid. The walls of the pipe are usually made of metal, or another substance with a high thermal conductivity, to facilitate the interchange, whereas the outer casing of the larger chamber is made of a plastic or coated with thermal insulation, to discourage heat from escaping from the exchanger.

source: wikipedia

Ipad 2

Model: Wifi

Size and Weight

• Height: 9.50 inches (241.2 mm)
• Width: 7.31 inches (185.7 mm)
• Depth: 0.34 inch (8.8 mm)
• Weight: 1.33 pounds (601 g)

Wireless and Cellular

• Wi-Fi (802.11a/b/g/n)
• Bluetooth 2.1 + EDR technology

Display

• 9.7-inch (diagonal) LED-backlit glossy widescreen Multi-Touch display with IPS technology
• 1024-by-768-pixel resolution at 132 pixels per inch (ppi)
• Fingerprint-resistant oleophobic coating
• Support for display of multiple languages and characters simultaneously

Cameras, Photos, and Video Recording

• Back camera: Video recording, HD (720p) up to 30 frames per second with audio; still camera with 5x digital zoom
• Front camera: Video recording, VGA up to 30 frames per second with audio; VGA-quality still camera
• Tap to control exposure for video or stills
• Photo and video geotagging over Wi-Fi

More details http://www.apple.com/ipad/specs/.

List of Hydro Power Plant in Malaysia

Hydropower

Peninsular Malaysia

Tenaga Nasional Berhad operates three hydroelectric schemes in the peninsular with an installed generating capacity of 1,911 megawatts (MW). They are the Sungai Perak, Terengganu and Cameron Highlands hydroelectric schemes with 21 dams in operation. A number of Independent Power Producers also own and operate several small hydro plants.

Sungai Perak hydroelectric scheme, with 1249 MW installed capacity:

* Sultan Azlan Shah Bersia Power Station 72 MW
* Chenderoh Power Station 40.5 MW
* Sultan Azlan Shah Kenering Power Station 120 MW
* Sungai Piah Upper Power Station 14.6 MW
* Sungai Piah Lower Power Station 54 MW
* Temenggor Power Station 348 MW
* Sultan Ismail Petra Power Station 600 MW

Terengganu hydroelectric scheme, with 400 MW installed capacity:

* Sultan Mahmud Power Station 400 MW

Cameron Highlands hydroelectric scheme, with 262 MW installed capacity:

* Sultan Yusof Jor Power Station 100 MW
* Sultan idris Woh Power Station 150 MW
* Odak Power Station 4.2 MW
* Habu Power Station 5.5 MW
* Kampong Raja Power Station 0.8 MW
* Kampong Terla Power Station 0.5 MW
* Robinson Falls Power Station 0.9 MW

Independent hydroelectric schemes

* Sg Kenerong Small Hydro Power Station in Kelantan at Sungai Kenerong, 20 MW owned by Musteq Hydro Sdn Bhd, a subsidiary of Eden Inc Berhad

Sabah and Sarawak

* Bakun Dam 2400 MW (Under construction)
* Batang Ai Dam at Lubok Antu, Sarawak 25 MW
* Murum Dam in Sarawak 944 MW (proposed)
* Tenom Pangi Dam at Tenom, Sabah 66 MW

Hydroelectric in Malaysia

Terengganu Hydroelectric Dam 400MW installed capacity

• Sultan Mahmud Power Station 4X100MW

Cameron Highlands Dam 262MW installed capacity

• Jor Dam 100MW
• Woh Dam 150MW
• Odak Dam 4.2MW
• Habu Dam 5.5MW
• Kampung Raja Dam 0.8MW
• Kampung Terla Dam 0.5MW
• Robinson Falls Dam 0.9MW

Sungai Perak Hydroelectric Dam installed capacity

• Bersia Dam 72MW
• Chenderoh Power Station 40.5MW
• Kenering Power Station 120MW
• Sungai Piah upper dam 14.6MW
  
• Sungai Piah lower dam 54MW
• Temenggor Power Station 348MW
  

PowerPac 9" Cyclone Fan

Can be this one as a cyclone fan instead of last post cyclone fan?

PowerPac 9" Cyclone Fan with Oscillation

* Strong Air Flow for Whole Room Ventilation and Circulation
* Fan Can be tilted up and down as Desired
* Stylish and Sleek

Medical weight scales

My body or my body weight getting weightier than before. Even before this just 60kg but now it's up 10%. I am feel tired and need to do something on that.



Maybe exercise will help that. To monitor my body weight, i think i need to purchase one medical weight scales so that i will realize earlier.

Advantages and disadvantages of plate heat exchangers

Advantages

• Compactness- The units in a plate heat exchanger occupy less floor space and floor loading by having a large surface area that is formed from a small volume. This in turn produces a high overall heat transfer coefficient due to the heat transfer associated with the narrow passages and corrugated surfaces.
• Flexibility- Changes can be made to heat exchanger performance by utilizing a wide range of fluids and conditions that can be modified to adapt to the various design specifications. These specifications can be matched with different plate corrugations.
• Low Fabrication Costs- Welded plates are relatively more expensive than pressed plates. Plate heat exchangers are made from pressed plates, which allow greater resistance to corrosion and chemical reactions.
• Ease of Cleaning- The heat exchanger can be easily dismantled for inspection and cleaning (especially in food processing) and the plates are also easily replaceable as they can be removed and replaced individually.
• Temperature Control- The plate heat exchanger can operate with relatively small temperature differences. This is an advantage when high temperatures must be avoided. Local overheating and possibility of stagnant zones can also be reduced by the form of the flow passage.

Disadvantages

• The main weakness of the plate and frame heat exchanger is the necessity for the long gaskets which holds the plates together. Although these gaskets are seen as drawback, plate-and-frame heat exchangers have been successfully run at high temperatures and pressures.
• There is a potential for leakage. The leaks that occur are sent to the atmosphere and not between process streams.
• The pressure drop that occurs through a plate heat exchanger is relatively high and the running costs and capital of the pumping system should be considered.
• When loss of containment or loss of pressure occurs, it can take a long time to clean and reinitialise this type of exchanger as hundreds of plates are common in larger builds.
• The narrow spacing between plates can become blocked by particulate contaminants in the fluid, for example oxide and sludge particles found in central heating systems.
• For the reason above most manufacturers will only guarantee their units for 12 months, furthermore replacement plate and gasket sets can be as much as the plate to buy initially.

source: wikipedia