In cold regions, due o the impact of climatic conditions, the heat load in winter and the cooling load in summer are unbalanced. In the long-term operation of the ground-source heat pump (GSHP), the soil heat imbalance phenomenon has still not been successfully solved. Therefore, this study took the GSHP of a public building in the cold area of northern China as the research object. Based on the unit performance data of the system over 8 years and the measured data of the soil temperature field, the long-term operation efficiency of the GSHP in the cold region and the variation law of the soil temperature field were explored. In order to further study the problem of soil heat imbalance, the effect of heat exchange hole groups at different intervals on the underground soil thermal environment after 30 years of operation in the system was simulated, and the optimization scheme of heat exchange hole spacing was proposed. The research results support the improvement and optimization of GSHP design and construction, and have important practical significance for the popularization of GSHPs in cold regions.
Ground Source Heat Pump is widely used in heating and cooling as a clean and efficient energy utilization technology. In cold regions, ground source heat pump systems have significant economic and environmental benefits. In this paper, we analyze the economic and environmental benefits of Area-compensated ground source heat pump systems in cold regions that achieve cooling and heating load balance through area compensation technology to assess their potential for sustainable development and environmental protection. The results show that the Area-compensated ground source heat pump system can operate stably and efficiently over a long period of time, and although the initial investment in the system is high, the initial investment can be recovered in a relatively short period of time by reducing energy consumption and operating costs. Compared with traditional heating and air conditioning systems, ground source heat pump systems can significantly save energy consumption and operating costs. At the same time, with the long-term operation of Area-compensated ground source heat pump systems, carbon dioxide emissions and air pollution can be greatly reduced compared to conventional systems. Area-compensated ground source heat pump systems provide a new way for sustainable development and environmental protection in cold regions by reducing energy consumption and operating costs, greenhouse gas emissions and pollutant release, and support the promotion of ground source heat pump systems in practical applications.
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