Energy Consumption Analysis of Heating System using a Low Temperature Geothermal Water Two Grade Utility with Water Source Heat Pump

A low temperature geothermal water two grade utility with water source heat pump used in a retrofit project was introduced in this paper.The concept of unit heating cost was presented according to the practical characteristics of the heating system.In addition,using the BIN method,the annual energy consumption of the water source heat pump system was analyzed and compared with gas-fired boiler project.The results indicated that the low temperature geothermal water two grade utility with water source heat pump system was economical and efficient with obvious superiority.