Comparison study of the renewable water source heat pump system with the conventional system

We analyzed the operating performances, such as the COP and the primary energy consumption, and LCCP, of a WSHP system by considering the local weather conditions, the water temperature, and the heating and cooling loads for various building types of interest (apartment, office building, hospital, data center, and department store). The WSHP system can utilize river, dam water, raw water, etc. as its hydrothermal energy sources. When the WSHP system having 500 RT is operated in an office building that is in Seoul, Korea, the monthly average COP of heating and cooling is predicted to be 3.63, while the monthly average primary energy consumption is estimated to 1678037 MJ. The WSHP system can reduce primary energy consumption by 12.80 % per year compared to the conventional system. The CO₂ emissions of the conventional heating and cooling system and the WSHP were compared by using the LCCP evaluation criteria provided by IIR. In the case of apartment, the CO₂ emission decreases from 31360608 kgCO₂ to 28375017 kg CO₂ by replacing the conventional system with the WSHP system.