What is the role of the reheater?

　　The role of the reheater: ① improve the efficiency of the thermal cycle; ② improve the dryness of the steam engine exhaust, reduce steam consumption, reduce the erosion of the steam in the last few stages of the turbine blades; ③ improve the efficiency of the turbine; ④ further absorb heat from the boiler flue gas to reduce the exhaust temperature.