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在分析太阳能、土壤源热泵及联合供热特点的基础上,研究了太阳能热泵独立系统、土壤源耦合热泵系统运行模式的制热性能和节能效果,建立了太阳能蓄能-热泵耦合热泵系统的供暖模式及优化模型。通过采暖季初期的太阳能蓄能、供暖,土壤源热泵独立供暖及太阳能-土壤源耦合热泵供热的实验研究,验证了太阳能-土壤源耦合热泵供暖模式的可行性和经济性,对比了太阳能-土壤源耦合热泵与单独运行土壤源热泵的系统性能。在整个供暖期内,太阳能-土壤源耦合热泵系统热泵机组平均COP为4.33,系统COP为3.98,系统性能优于任一独立系统。对于热泵容量2.5kW的实验机组,供暖系统冬季可节电2100kWh,综合经济效益显著。
Based on the analysis of the characteristics of solar energy, ground source heat pump and combined heat supply, the heating performance and energy saving effect of solar heat pump independent system and soil source coupled heat pump system are studied, and the heating of solar energy storage - heat pump coupled heat pump system is established. Model and optimization model. The feasibility and economy of solar-soil source-coupled heat pump heating mode were verified by solar energy storage, heating, independent heating of ground-source heat pump and solar-soil-source coupled heat pump heating in the early heating season. The solar- System performance of a soil source coupled heat pump and a ground source heat pump operating alone. During the entire heating period, the average COP of the solar-earth source-coupled heat pump heat pump system was 4.33 and the COP of the system was 3.98. The system performance was superior to that of any independent system. For the experimental unit with a heat pump capacity of 2.5kW, the heating system can save electricity by 2100kWh in winter and has obvious comprehensive economic benefits.