By adding apreheater and a water cooling solution cooler on the Kalina cycle

a triplepressure ammonia-water power cycle(TPAWPC)was established

which makes the cycle energy utilization more reasonable

saves the heat exchange area

and can produce domestic hot water. Considering the waste heat recovery rateηwh

the power recovery efficiencyη0

which was product of theηwhand the cycle thermal efficiencyηth

was regarded as the evaluation criterion.Parametric sensitivity study was conducted to discuss the influences of some key parameters on the thermodynamic performance of the cycle

including the work and basic concentrations

circulation ratio

and the highest temperature of the cycle.The results show that the work concentration determines working pressure of the cycle

and the basic concentration should match the work concentration for high efficiency.The circulation ratio has positive while rather weak effect on the power recovery efficiency with range from 5to 8.The calculation example presented finally shows that the thermal efficiency and power recovery efficiency reach 26.05%and 22.47%respectively with the turbine inlet parameters of 400℃/8MPa and the cycle lowest temperature of 30℃.