设计并搭建了太阳能辅助土壤源跨临界CO_2空调与热泵热水实验系统,通过水路阀门的控制,可以使系统工作在制冷工况、制热工况、热水工况、制热+热水工况、制冷+热水工况等模式下。进行了多组利用土壤源制热工况实验,取得了很好的实验结果和较高的性能系数;实验结果验证了理论分析结果。实验过程中监测到地埋管系统测温点的温度不断下降,分析了温度下降的原因并提出了下一步实验方案。 Design and construction of a solar assisted soil source transcritical CO_2 air conditioning and heat pump hot water experimental system, through the water valve control, the system can work in the cooling conditions, heating conditions, hot water conditions, heating + hot water Conditions, refrigeration + hot water conditions and other modes. A series of experiments were conducted using soil-source heating conditions, and good experimental results and high performance coefficients were obtained. The experimental results verify the theoretical analysis. During the experiment, the temperature of the temperature monitoring point of the buried pipe system was continuously decreased. The reason of the temperature drop was analyzed and the next experimental scheme was proposed.