I wanted to know the reason why the inlet temp. of steam turbines are less than that of a gas
A combined cycle is an assembly of engines that convert heat into mechanical energy, which in turn usually drives electrical generators. The principle is that the exhaust of one heat engine is used as the heat source for another, increasing the system's overall efficiency. This works because heat engines are only able to use a portion of the energy their fuel generates (usually less than 50%).
The remaining heat (e.g., hot exhaust fumes) from combustion is generally wasted. Combining two or more thermodynamic cycles results in improved overall efficiency, reducing fuel costs. In stationary power plants, a successful, common combination is the Brayton cycle (in the form of a turbine burning natural gas or synthesis gas from coal) and the Rankine cycle (in the form of a steam power plant). Multiple stage turbine or steam cylinders are also common.
thank you mr.viplove
but my question is sth else.
consider two distinct power plants,a gas power cycle and an steam one.why the inlet temperature of steam turbine is less than that of gas turbine?
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