Thermodynamic Performance Analysis of Extraction Reheat Cycle

In order to improve the overall economic level of special steam turbine units, taking a 55 MW level waste incineration power generation steam turbine unit as the research object, by increasing the main steam pressure and the extraction reheat cycle, the effects of the location of different reheat steam source extraction points, reheat temperature and reheat pressure on the economic performance were qualitatively studied, and thermal performance under different schemes was calculated. Results show that increasing the main steam pressure and adopting the extraction reheat cycle can significantly improve the economic level of the unit. Under the same boiler heat absorption, the unit output of scheme 3 and scheme 4 is 5.46% and 6.61% higher than that of scheme 1, respectively. The unit output of scheme 4 is 1.15% higher than that of scheme 3.