Exergy Analysis of Low-temperature Water Heat Pump Operation

In this paper,we introduced the method of exergy analysis and evaluated the course of low-temperature water heat pump operation.Under the water temperature specified as 10℃ and 15℃,the exergy deduction of heat pump unit was obtained to 1.22kw and 1.04kw,respectively,the exergy efficiency of heat pump was obtained to 21% and 33%,respectively.The influence extent to system efficiency of facilities was specified by the method of exergy deduction and exergy efficiency calculation to each equipment in the system.After calculation,the compressor was considered the biggest influence factor.Also,changing the reference state,comparing the system exergy deduction and exergy efficiency in the different environment temperature,we could depict graph to analyze the system exergy deduction and exergy efficiency when altering the environment temperature.