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Ashugonj Power Station

The 13th batch of ETE in Daffodil International University arranged a study tour in the Ashugonj Power Station. I am Badhon with my friend Jerin, mamun, shushama are attended the tour. Our honarable teacher Md Muhibul Haque Bhuiyan was also with us.


Based on the general principle when the rotor of the generator rotates electromagnetic field cerates. Now if we can cut the electromagnetic flux electric current will be induced.

Generator is previously made. But the problem is how to rotate the rotor i.e. turbine.

There is a lot of solution of this problem. And one of them is steam. Creating pressure by the stem to the turbine of the generator we can rotate the turbine and get electricity from the output end of the generator.

Ashugonj Power station use to follow the exactly same procedure. Ashuganj Power Station Company Ltd. (APSCL) owns the second largest power station in Bangladesh. The installed capacity by its 8 units is 724 MW and present de-rated capacity is 642 MW. Ashuganj Power Station fulfills about 15% of power requirements of the country. Situated on bank of Voirob River near B Baria.

As raw material it uses water from the nearest river Voirob and Gas (96% Mithen) from Titas Gas plant. At first when it takes water from the river in its own plant it use to demineral the in order to make the water free from all unwanted element. Now the main work is to burn the water to create steam. For that it needs gas to burn. They get 96% Mithen from the Titas gas plant. But they add some air with the water in order increase the efficiency. It has a force draft fan whose Motor rating is 1000kw/6.6kv to collect the air. At first they take gas in the furnace spark it and create fire then they add air. Before adding air they use to heat the air in three steps to match temperature with the furnace. They heat it in three steps because if they heat the air at a time that may damage the pipe line what is containing the air. There is a water tank in the furnace which is 50% full of water and the upper portion of the water is steam. The heat created by burning the gas+air make the steam from water. The stem is carried by a pipe. But the pipe line cross the furnace again because the steam may contain some water or other materials what is not allowed. Now this steam is carried to the turbine. But there is a long distance between the furnace and turbine. When the gas comes out from the furnace its temperature remains 522cel. This temperature can be reducing. So we need to keep the heat to get out expected pressure. Here is also a process. In the furnace when the GAS(96% Mithen) and air was burning a new gas according to their word FLUE gas creates. This flue gas contains Oxygen and Carbon Die oxide and no Hydrogen and Carbon Mono Oxide and its temperature is very high near 1300cel. A pipe line of the flue gas is beside the pipe of stream pipe. So that steam can collect heat from the gas pipe. Now this steam will go with a great force because of heat and will create a great pressure on the turbine and ultimately the turbine will began to run. When we visited the power station at that time

Gas Pressure= 1.2 bind

Air pressure= 200Nm3/h

Motor rating:( V=11.000+-5% A=.4690 Cos fi=0.8 Ve=267 Ae=1327 RPM=3000/min f=50Hz P=89280kva)

The three phase output of the motor is connected with three separated step down transformer. That steps down to match the supply voltage with the grid line.


The matter of regrate is that the station running on moreover 500 manpower was made by the Pakistan Government. After 38 years of libaration we could not increase it's capacity but we destroyed it from many side. Till now it is running on a analog system. Fully depending on the foreign fund it have taken a goal of 1400mw. My question is ...is that dream will come true...?

Category: 3 comments

3 comments:

silvi said...

nice article ......gd job.. :) we got a lot of information here abt asuganj power station :) try to give more articles like tht :)

thebond said...

thanx a lot... for reading my article. I will try to...

- মামুন ‍- said...

hmmm So niccccc.........................>' "<

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