For Summer flow sheet without heat supply and with lower pressure and temperature of exhaust steam of vapor turbine, the energy integrated utilization coefficient of system, thermal efficiency of combined cycle are 67 % and 41.48 %, respectively. 在非采暖季,由于没有供热需求,蒸汽循环排汽压力和温度较低,系统能量综合利用系数和联合循环热效率分别为67%和41.48%。