Saturday, April 30, 2011

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.

Sunday, April 24, 2011

Advantages and disadvantages of plate heat exchangers

  • 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.

  • 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

Saturday, April 23, 2011

Lasko 20" Cyclone Fan 3520

Are this suitable to put at plant for machine cooling purpose? Cyclone fan. After surf internet, I found this:

The Lasko 20" Cyclone Power Circulator Fan 3520 features aerodynamic fan blades and a special grill design to maximize its performance. This air circulator fan is a great addition to your air conditioning, or can be directed at you for immediate heat relief. Its adjustable fan head pivots 90 degrees and locks in place for precision and comfort. Ideal for large rooms, the easy to use top-mounted controls and easy-carry handle make this a great fan for any room in the house as well.

Product Specifications:

* Style: Floor
* Speeds: 3
* Dimensions: 23 1/2" W x 6 3/4" D x 23 3/16" H
* Weight: 10 lbs
* Color: White/Gray

Features and Benefits:

* Powerful 20" aerodynamic fan blades
* Swirling grill design for power and performance
* Adjustable fan head pivots and locks in place for precision and comfort
* Lightweight with easy-carry handle for convenient portability
* Energy-efficient operation
* Patented fused safety plug
* Fully Assembled
* 1 year limited warranty

Wednesday, April 20, 2011

Bosch Rexroth Hydraulic

Bosch Rexroth has developed hydraulic drives and cylinders designed to handle the complex, powerful forces exerted by river dams and medium- and high-pressure hydroelectric power stations. We have in-depth experience applying hydraulics engineering principles to challenges such as:
  • Dam bottom outlet gates must produce high pulling and pushing forces of several 1,000 kN
  • Turbine intake gates and draft tube gates must close at velocities of 20m/min or more
  • Turbine controls requiring high position accuracy, short response times and high dynamics
  • Tainter gates need large slender hydraulics cylinders that move both slowly and in close synchronization
  • All hydraulics systems must provide highest degree of operational safety.

Tuesday, April 19, 2011

Solar Energy

Simple solar system

Solar system

Solar energy, radiant light and heat from the sun, has been harnessed by humans since ancient times using a range of ever-evolving technologies. Solar radiation, along with secondary solar-powered resources such as wind and wave power, hydroelectricity and biomass, account for most of the available renewable energy on earth. Only a minuscule fraction of the available solar energy is used.

Solar powered electrical generation relies on heat engines and photovoltaics. Solar energy's uses are limited only by human ingenuity. A partial list of solar applications includes space heating and cooling through solar architecture, potable water via distillation and disinfection, daylighting, solar hot water, solar cooking, and high temperature process heat for industrial purposes.To harvest the solar energy, the most common way is to use solar panels.

Solar technologies are broadly characterized as either passive solar or active solar depending on the way they capture, convert and distribute solar energy. Active solar techniques include the use of photovoltaic panels and solar thermal collectors to harness the energy. Passive solar techniques include orienting a building to the Sun, selecting materials with favorable thermal mass or light dispersing properties, and designing spaces that naturally circulate air.


Friday, April 15, 2011

Alfa Laval Plate Heat Exchanger - Countercurrent Heat-Cool Application

Video shows conceptual flow paths for counter-current heat-cool for a standard Alfa Laval Plate Heat Exchanger.

Tuesday, April 12, 2011

Top 3 The World's Largest Power Plants

No 1 - Three Gorges 18,460 MW

China No 2 - Itaipu 14,750 MW Brazil/Paraguay

No 3 - Simon Bolivar (Guri) 10,055 MW

Sunday, April 10, 2011

Current iPAD one Price

Malaysia iPad1 price list:

iPad WiFi
16GB RM1199 (was RM1549)
32GB RM1499 (was RM1849, RM350 cheaper)
64GB RM1799 (was RM2149, )
iPad WiFi+3G
16GB RM1599 (was RM1999)
32GB RM1899 (was RM2299)
64GB RM2199 (was RM2599)
That’s RM350 cheaper for all iPad WiFi models, and RM400 cheaper for all iPad WiFi+3G models!

Saturday, April 9, 2011

Micro hydro: how it works

Micro hydro uses diverted river water to local produce up to 100 KW of power. Very useful in water rich areas where access to other energy sources is difficult. Find out how it works in this minute long silent animation.

The ecological impact of small-scale hydro is minimal; but the low-level environmental effects must be taken into consideration before construction begins. Stream water will be diverted away from part of the stream, so proper caution must be exercised to ensure there is no damaging impact on the local ecology.

MTA Malaysia 2011 - 4th May to 8th May 2011

MTA Malaysia 2011
Putra World Trade Centre
41 Jalan Tun Ismail
Kuala Lumpur, 16
Malaysia International Precision Engineering, Machine Tools and Metalworking Exhibition & Conference.

Wednesday, April 6, 2011

OGA 2011


OGA, Asia's biggest oil and gas event will return for another record breaking edition from 1-3 June 2011.

OGA 2011 will provide an unrivalled opportunity for the global oil and gas community to converge in Kuala Lumpur for 3 days to exchange ideas, network and discuss business opportunities.

With the 2009 event attracting 1,337 exhibitors from 49 countries and 21, 787 visitors from 57 countries, OGA represents the most international platform in the region for companies looking to do business in this dynamic industry sector. National Governments also recognise the importance of OGA as a business platform and in 2009 we enjoyed hosting pavilions from Australia, Austria, Belgium, Denmark, Germany, Italy, Norway, The Netherlands, United Kingdom and United States of America.

Monday, April 4, 2011

How a coal power station works

This video showing about power generation using coal plant. Enjoy and learn from this...

Sunday, April 3, 2011

Canon's New Baby EOS 1100D

Canon's New Baby EOS 1100D

The EOS 1100D is designed with beginners and leisure photographers in mind, helping to bridge the gap between the comfort and ease of a compact camera and the superior image quality and power of a high-end DSLR.

Available in balck, red, brown, and metallic gray with matching straps, the body is lighter and more compact that most DSLRs. It comes with a viewfinder as well as a 2.7 inch, 230,000 dot TFT LCD monitor, A redesigned control layout allows for simple one-handed usage while frequently-used controls are given larger buttons. A new feature guide function displays simple
explainations and suggestions for every mode and setting in the camera.

The camera, which has a high quality 12.2 megapixel CMOS sensor and DIGIC 4 image processor and allows for HD movie making at 1280X720 resolution, is available at recommended retail price of RM1,999.00.

source: personal money April 2011

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