The Rankine Cycle

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Phase 2---- 1x 135 MW imported Coal+corex base power plant under designing.


Multi fuel power plant works on the principle of Rankine Cycle.

The Rankine cycle is a vapour power cycle that forms the thermodynamic basis for most steam power plants. These plants may use coal, oil, gas, or nuclear power as fuel for a high temperature source, but the basic thermodynamic operation remains fairly constant.

The Rankine cycle relies on the isentropic expansion of high-pressure gas to produce work. The gas of choice for most Rankine cycles is steam. The system

operates on the premise that the easiest way to make high pressure steam is to start with high-pressure water and then heat that water at constant pressure. It's a concept
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Of all the costs associated with the production of electricity, it is the only one whose control can still have a significant impact on bus bar generation costs after the power plant has been constructed. Fuel selection for electric power generation plays a significant role in establishing the parameters that will be used in designing combustion and pollution control systems of the power plant.

A multi fuel power plant can run on multiple fuels like coal, heavy fuel oils, natural gas, biogas and several other fuels. The fuel can be switched freely during operations without any decrease in power output. A multi fuel power plant allows operators to always choose the most economical and readily available fuel.

We are using four fuels for combustion; LDO (Light diesel oil), HFO (Heavy fuel oil), Corex Gas and Corex Coal.

LDO is used for ignition in the burners to start the combustion. After this, HFO is used to reach till 40% of the boiler load. Both Coal and Corex gas are used to reach 100% of the boiler
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The increase in heat transfer surface has been accomplished not only by increases in the size of the steam generator, but also by changing the arrangement and configuration of the heat transfer surface.

The earliest steam generators consisted of a water-filled vessel heated by fire. The heat transfer surface of this arrangement was increased by placing tubes through the vessel and passing hot flue gas from the combustion process through the tubes. As this fire tube design reached size limitations, the water tube design was developed. The water tube design is based on water and/or steam within the heat transfer tubes and the combustion process and flue gas outside the tubes. The water tube design is the basic arrangement currently used in large-utility steam

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