Скачать или смотреть 22. Combined Cycle Power Plant Working|CCPP in Urdu/Hindi

Combined Cycle Power Plant Working|CCPP
A combined Gas-Vapor Power Cycle (Combined Cycle Power Plant) is a combination of a gas power cycle (Brayton Cycle) and a steam power cycle (Rankine Cycle).

The Brayton cycle is one of the gas power cycles. It was proposed by George Brayton around 1870 for use in reciprocating oil-burning engines. It consists of the following four processes:

5-6 Isentropic compression in the compressor
6-7 Constant Pressure heat addition
7-8 Isentropic expansion in the turbine
8-9 Constant pressure heat rejection

In Gas turbines, only air is compressed in the compressor during the compression stroke and then fuel is added to the combustion chamber with the help of combustors. Then high-pressure and high-temperature gases produced as a result of combustion expand in turbine producing power. In the end, exhaust gases are thrown out of the engine at constant pressure.

The Rankine Cycle consists of the following processes:
1-2 Isentropic compression in a pump
2-3 Constant pressure heat addition in a boiler
3-4 Isentropic expansion in the turbine
4-1 Constant pressure heat rejection in a condenser

In steam turbines, water is compressed in a pump during the compression stroke, and then combustion gases coming from the gas turbine provide energy to water converting it into superheated steam. Then superheated steam expands in the turbine producing power. After expansion, the liquid-vapor mixture is passed through the condenser converting all the fluid to liquid water and the cycle continues.

In a combined cycle power plant, heat is added at an average high temperature and rejected at an average low temperature. Thus, a combined cycle power plant has a higher efficiency than either of the cycles.

#CombinedCyclePowerPlantWorking#CombinedCyclePowerPlantefficiency

Combined Cycle Power Plant Meaning 00:02
Combined Gas Vapor Power cycle schematic diagram 01:07
Combined Gas Vapor Power cycle Ts diagram 03:06
Advantage of Combined Gas Vapor Power cycle 04:34
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