Research on the Influence of Thermal Performance of Steam Turbine on Energy Loss and Heat Rate

A steam turbine as research object in this paper, and the thermodynamic calculation program of steam turbine and thermal system was programmed, and the influence of thermal performance change of flow passage component on the heat rate was analyzed. The results show that the efficiency of the unit is linear with the heat rate; the greater the power of the unit, the closer to the exhaust end, then the influence of unit efficiency change on heat rate is also greater. The effect of the turbine efficiency change on the heat rate was analyzed in this paper based on the heat rate change relation model; the calculation results were basically consistent with the thermal calculation, it shows that this mathematical model has high calculation accuracy and it is properly applied into engineering calculation. (paper)