Energy and Exergy Analysis of a Ground Water Heat Pump System

In the application of ground water source heat pump technology, energy saving considerations play an important role. The main objective of the present study is to investigate the performance characteristics of a groundwater heat pump system (GWHP) on the actual operation, using the energy and exergy analysis method. The system was installed in a apartment buildings of Wuhan, China. In the duration of one year, various operating parameters of the system were monitored and the coefficient of performance (COP) values of system and chiller is determined based on a series of measurements. The exergy transports and destruction between the components of the system are determined for the average measured parameters obtained from the experimental results. Inefficient facts are found out. Lower approach temperature is effective energy saving. In addition to the energy analysis, a full exergy analysis helps to identify the components where inefficiencies occur.