Experimental study on heat supply of soil-seawater-source heat pump

Sets up a field test platform of soil-seawater-source heat pump and performs heating experiment. The experimental results show that the higher the sand soil temperature is, the more the inlet water temperature of heat pump is, which results in larger heat exchanger capacity per unit length and higher COP of the heat pump system. Under the experimental conditions, the average value of heat exchanger capacity per unit length is 38.2 W/m, and the average value of COP is 1.8. The heat exchanger of soil-seawater-source heat pump system has little effect on the soil thermal environment due to stronger temperature restoration ability of shallow layer seabed soil.