Tuesday, September 29, 2009

Hydroelectricity Dam or Hydroelectricity Power Station

Dam Hydroelectricity Description

Area of Dam Hydroelectricity Station

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Dam Hydroelectricity Major Components

Dam Hydroelectricity Picture

How the Dam hydroelectric works? The water is held in a reservoir as per picture above (Dam Hydroelectricity), behind the dam, the water close to the control gates is where the intake is, and when the control gates open, the water rushes through the penstock and turns the turbine. After the water does so, it goes through the outflow into the river. The turbine spins the generator, and the electricity goes to the transformer in the powerhouse. Then the transformer transforms the electricity into a usable form, and the electricity travels through the power lines and goes to homes and businesses.

One more thing that is needed is location. To build a dam there has to be valleys and rivers. This will help with the building of the dam. There has to be great location or it won’t work. The land cannot be flat, or there is no way to build a dam. Canada, USA, the former USSR, Brazil, China, Norway, Japan, Sweden, India, and France all use hydroelectric energy. These countries are in order from the largest number of kilowatts in billions that are used each year.

There are advantages and disadvantages of using hydroelectricity energy. Here are some of the advantages. It is renewable, clean, non-polluting, and it prevents floods. Not all dams produce electricity, but they prevent flooding, and others do both.

As said, there are advantages of using hydroelectricity energy. There are disadvantages too. Here are some of the disadvantages. Hydroelectricity dams can harm many species that live on the area, the land around the dam can be destroyed, and the furious turbines will kill the fish.

As said before, dam hydroelectricity energy is one of many sources of electricity in the world. The future of hydroelectricity power is looking like it will still be used in the next century or more, because the world will still have plenty of running water and the need for lots of non-polluting energy.

Source: Hydroelectric Energy

Monday, September 21, 2009

How a Coal-fired Power Plant works

Coal Fired Power Plant Process

1. Coal Supply

  • Coal from the mine is delivered to the coal hopper, where it is crushed to five centimetres (2 inches) in size.
  • The coal is processed and delivered by a conveyor belt to the generating plant.

2. Pulverizer

  • The coal is then pulverized, or crushed, to a fine powder, mixed with air and blown into the boiler, or furnace for combustion.

3. Boiler

  • The coal / air mixture ignites instantly in the boiler.
  • Millions of litres of purified water are pumped through tubes inside the boiler.
  • Intense heat from the burning coal turns the purified water in the boiler tubes into steam, which spins the turbine (see number four) to create electricity.

4. Precipitator, stack

  • Burning coal produces carbon dioxide (CO2), sulphur dioxide (SO2) and nitrogen oxides (NOx).
  • These gases are vented from the boiler.
  • Bottom ash, which is made of coarse fragments that fall to the bottom of the boiler, is removed.
  • Fly ash, which is very light, exits the boiler along with the hot gases.
  • An electrostatic precipitator (a huge air filter) removes 99.4 per cent of fly ash before the flue gases are dispersed into the atmosphere.

5. Turbine, generator

  • Water in the boiler tubes picks up heat from the boiler and turns into steam.
  • The high-pressure steam from the boiler passes into the turbine (a massive drum with thousands of propeller blades).
  • Once the steam hits the turbine blades, it causes the turbine to spin rapidly.
  • The spinning turbine causes a shaft to turn inside the generator, creating an electric current.

6. Condensers and the cooling water system

  • Cooling water is drawn into the plant and circulated through condensers, which cools steam discharged from the turbine.
  • Steam from the turbine also passes through the condensers in separate pipes from cooling water.
  • The cold water is warmed by the steam, which condenses back into pure water and circulates back to the boiler to begin the process of generating electricity again.
  • Cooling water, now warm from the heat exchange in the condensers, is released from the plant.

7. Water treatment plant: water purification

  • To reduce corrosion, water must be purified for use in the boiler tubes.
  • Other wastewater systems within the plant collect water used to clean pipes and other equipment, and sludge from the water purification process and other processes.
  • Waste water is pumped out of the plant and into the holding ponds.

8. Precipitator, Ash systems

  • Ash that builds up on the precipitator's plates is vibrated off and collected in large hoppers or bins.
  • Fly ash and bottom ash are removed from the plants and hauled to disposal sites or ash lagoons.
  • Depending on the market demand, fly ash produced from TransAlta's three plants is sold to the cement industry for construction.

9. Substation, transformer, transmission lines

  • Once the electricity is generated, transformers increase the voltage so it can be carried across the transmission lines.
  • Once electricity is delivered to substations in cities and towns, the voltage flowing into the distribution lines is reduced, and then reduced again to distribute electricity to customers.
Source: canadiancleanpowercoalition

Tuesday, September 15, 2009

General Coal Fired Power Plant View

General Coal Fired Power Plant View

Friday, September 11, 2009

Field Xpert SFX100 Is the Process Industry’s First Wireless Configuration Tool

Field Xpert is a high performance device configurator that meets the needs and requirements of the process industry:

Handheld for device configuration
Wireless Communication via Bluetooth™ or WLAN based on an Industrial PDA
Device Xpert - Configuration software package for field device commissioning, diagnosis and maintenance
Envelop Curve for Endress + Hauser Time of Flight (ToF) level device
Flexible Architecture with Windows Mobile operating system
Investment Protection with easy future integration of WirelessHART, Foundation Fieldbus and Profibus protocol

Field Xpert SFX100

Field Xpert is a compact, flexible, ergonomic and robust industrial PDA adapted to your needs for high productivity.

The Field Xpert package comprises:

Field Xpert device Device Xpert configuration software for all registered HART® devices HART®/Bluetooth™ modem for device connection

Field Xpert offers functions to reduce your instrument setup and diagnosis time. It operates with HART®/Bluetooth™ modem and WLAN supported networks.

Device Xpert configuration software makes Field Xpert the complete HART® communicator for industrial applications.

Flexible architecture

The Windows Mobile™ operating system makes it possible to install further software applications for Plant Asset Management activities such as maintenance and documentation.

The Endress+Hauser software packages of the Xpert series run well on Field Xpert. This makes Field Xpert a real all-rounder for tough industrial applications.

Technical data at a glance


3.5" transreflective TFT color
64k, QVGA, 240 x 20 pixel
Portrait and landscape mode
Protected by a Makrolon panel

Power Supply

Rechargeable lithium ion battery

Non-Ex version: 2880 mAh
Ex version: 3600 mAh


Protection class IP 65 (immersion for brief periods)

Dimensions L x W x D

178 x 85 x 9 mm


Non-Ex version: 550 gram
Ex version: 700 gram

Temperature ranges

Storage: -10°C up to +60°C
Charging: 0°C up to +45°C
Working, non-Ex version: -10°C up to +60°C
Working, Ex version: -10°C up to +50°

Relative humidity

Storage and operation: up to 90% r.h.

More details can be accessed at this resource.

Wednesday, September 9, 2009

Is the Nokia 5800 XpressMusic the best handset Nokia has ever launched?

GLOBAL – The Nokia 5800 XpressMusic is arguably an unlikely candidate for such a bold question, especially when mentioned in the same breath as milestone mobiles of the past few years including the N95 and E71. But could Nokia’s first touchscreen caller actually be the best handset Nokia has ever released?

Read on to examine the evidence (and gut feelings), and to lay down your opinions.

This question has manifested itself as a result of a number of curious colliding factors. For starters, no matter who I’ve been speaking to of late (both within and outside of Nokia) the 5800 XpressMusic is consistently and unreservedly being championed along the lines of an ‘instant icon’ or ‘the best handset Nokia has released in years’. Likewise, one friend went into Carphone Warehouse here in the UK, and was told by the guy behind the counter that all they were selling was 5800s. Of course that doesn’t earn the 5800 this particular gold star of all-time greatness. Nonetheless, there’s my personal exhibit A.

Moving onto exhibit B, 1 million of these devices were shipped within the first two months of it going on sale, proof of its instant popularity.

Other evidence rears its head in the sheer amount of content that has been created by folks online surrounding the Nokia 5800 XpressMusic – in a little over 3 months almost 10 million search entries have appeared on Google relating to Nokia’s touchscreen music device. Compare that to the N95, which has attracted almost 34 million search results pages in over two years, and it becomes clear that the 5800 is a talking point on a serious scale.

Plus, we recently ran a poll to find out which new Nokia music phone was your favourite, which saw the 5800 XpressMusic go up against the newer 5730 XpressMusic, the Nokia 5630 XpressMusic, the Nokia 5330 XpressMusic and the Nokia 5030. Now it didn’t just win this poll, it annihilated its rivals to stomp into the top slot, capturing 56 per cent of the vote, more than double that of the 5730 XpressMusic. To win so convincingly was interesting. Of course, this was a poll of only a few recent handsets, yet it says something doesn’t it?

So is the Nokia 5800 XpressMusic the best handset Nokia has ever launched?

Source: Nokia, Nokia 5800 Best Tips& Tricks

Saturday, September 5, 2009

21 Reasons Why Nokia 5800 is better than Apple Iphone???

I pick this articles from internet.....

We get lots of requests to compare in detail Nokia 5800 with Apple Iphone 3G. Here are some reasons we believe Nokia 5800 is way ahead than Iphone-

1) Size
The iphone is bigger in size and uneasy for one hand grip. Nokia 5800 is designed to fit well into your hands. Being smaller in width, it’s easy to operate single handedly.
Iphone size: 115.5 X 62.1 X 12.3 mm
Nokia 5800 size: 111 X 51.7 X 15.5 mm

2) Weight
Iphone is much bulkier than Nokia 5800. Nokia 5800 is 25g lighter than Iphone in weight.
Iphone: 133g
Nokia 5800: 109g

3) Screen Resolution
The Iphone has 3.5” screen while Nokia 5800 has 3.2” but the resolution of 5800 is far more superior to Iphone.
Iphone: 480 by 320
Nokia 5800: 640 by 360

4) Storage
Iphone comes with two options- 8GB & 16GB internal memory. Nokia has a more flexible option to offer 8GB with micro SD card which is expandable upto 16GB. Nokia owners can expand memory size according to needs which the Iphone guys can’t do.

5) Input Methods
Iphone: Finger only.
Nokia 5800: Finger, stylus, plectrum, handwriting recognition.

6) Features
Apple Iphone has lots of missing features like cut and paste function, saving email attachments, no support for third party headphones, ringtones, applications, many software bugs and other technical glitches. Nokia 5800 Tube has no such issues plus many more amazingfeatures included.

7) Colors
Iphone: Black for 8 & 16 GB, White for 16 GB only.
Nokia 5800: Red, Blue and Black.

8 ) Battery
Nokia 5800 provides upto 35 hrs of music playing time against Apple Iphone which claims just 24 hrs. Overall battery power (talktime/standby) is also about 30% more in Nokia 5800. What more, 5800 has a removable battery which Iphone lacks.
Iphone: 5 hrs talk-time, 300 hrs standby, not removable.
Nokia 5800: 8.8 hrs talk-time, 406 hrs standby, removable battery.

9) Camera
Iphone: 2 MP, no flash, no zoom, no additional camera.
Nokia 5800: has a 3.2mp camera, 3x digital zoom with Carl Zeiss lens,
professional optics, autofocus, zoom, and flash compared to the iphones 2mp cheap optics. A second camera in front is available for video calling/conferencing.

10) Video Calling
Iphone: No Video calling possible in Iphone.
Nokia 5800: Video calling is possible.

11) Video Recording
IPhone: No option for video recording.
Nokia 5800: Video recording is included.

12) Music Service
Iphone: Paid service with Apple Itunes Store. You pay and download music to your Iphone.
Nokia 5800: “Comes with music” service is bundled with Nokia 5800 Xpressmusic phone by which you can download as much music as you want for 1 year- FREE!!

13) Voice Dialing
Iphone: Not Available
Nokia 5800: Available

14) Voice Recording
IPhone: Not Available
Nokia 5800: Available

15) Web Browser
Iphone: Webkit based Safari browser, no flash available.
Nokia 5800: Webkit based browser, supports flash lite.

16) FM Radio
Iphone: Not Available
Nokia 5800: Available

17) Bluetooth
Iphone: Bluetooth is available for just handsfree, no file sharing possible.
Nokia 5800: Bluetooth available for handsfree and file sharing is possible. Better audio quality on bluetooth in 5800 with A2DP technology which Iphone lacks. The 5800 supports stereo bluetooth. The iphone does not.

18) Messaging
Iphone: It does not support message forwarding, multiple SMS deletion, sending SMS to multiple recipients and multimedia messages (MMS).
Nokia 5800: All the above is possible plus it has MMS ver 1.3, message size upto 600kb, and automatic resizing of Images for MMS.19) GPS The Nokia 5800 has a GPS receiver with turn by turn directions. The iphone does not have turn by turn

20) The OS
The 5800 runs symbian s60 which means that you have the ability to install any number of programs on it, such as a different internet browser or multimedia player. Apple does not allow apps in the app store that mimic the official apps. there are internet browsers available for the 5800 that have embedded flash. the safari browser on the iphone is html only.

21) Experience
Nokia: Ages of experience, hundreds of success stories and dozens of smart handsets in current portfolio. Nokia has about 40% market share with the No.1 spot with no close competitors. Certainly the king when it comes to brand value, service and experience.
Apple: First phone ever launched by Apple is Iphone, no prior experience in the telecom market. It’s a novice in the market with a very less market share despite having millions of Iphone sold.

Verdict: Almost all the major brands around the world like Samsung, HTC, LG, etc launched their touchscreen smartphones with a hope to beat Apple’s Iphone. No-one came close to Iphone when it comes to looks, style, feel and features.
This is the first time a tech giant like Nokia has hit it hard with its first true touchscreen smartphone. Nokia 5800 is a real Iphone killer with way ahead features, perfect looks and great price. Bravo Nokia, Well Done!!

Both looks great! Youuuu..???
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