水平配置型地中熱交換器を用いた地中熱ヒートポンプの冷房性能

抄録

The purpose of this study is to investigate the cooling performance of a ground source heat pump that use the direct expansion method with a ground source heat exchanger placed horizontally in a shallow layer. The ground source heat exchanger consists of a horizontal air/refrigerant heat exchanger, which is used in commercial air source heat pumps, inserted into a stainless-steel container filled with water. The shallow arrangement of the heat exchanger is designed to allow for insufficient heat extraction and dissipation from the ground, so a water-cooling system is used to fill the stainless-steel container with water. The experiment was conducted in cooling operation at a set temperature of 23°C. The average output power was 3.7 kW, the average power consumption was 0.57 kW, and the average COP was 6.7.