ISSN 1000-3665 CN 11-2202/P
    范琦,袁林山,赵存法,等. 南京地区地源热泵系统优化及时间效应研究[J]. 水文地质工程地质,2024,51(4): 233-242. DOI: 10.16030/j.cnki.issn.1000-3665.202311052
    引用本文: 范琦,袁林山,赵存法,等. 南京地区地源热泵系统优化及时间效应研究[J]. 水文地质工程地质,2024,51(4): 233-242. DOI: 10.16030/j.cnki.issn.1000-3665.202311052
    FAN Qi, YUAN Linshan, ZHAO Cunfa, et al. Study on optimization and time effect of ground-source heat pump system in Nanjing[J]. Hydrogeology & Engineering Geology, 2024, 51(4): 233-242. DOI: 10.16030/j.cnki.issn.1000-3665.202311052
    Citation: FAN Qi, YUAN Linshan, ZHAO Cunfa, et al. Study on optimization and time effect of ground-source heat pump system in Nanjing[J]. Hydrogeology & Engineering Geology, 2024, 51(4): 233-242. DOI: 10.16030/j.cnki.issn.1000-3665.202311052

    南京地区地源热泵系统优化及时间效应研究

    Study on optimization and time effect of ground-source heat pump system in Nanjing

    • 摘要: 地埋管换热器孔间距的合理设计是开发侵蚀堆积平原地区浅层地热能时需首先解决的问题。为了获得能供设计参考的地埋管换热器孔间距,确保地源热泵系统长期稳定运行,依托南京市秦淮区石门坎102号地源热泵试验工程,通过温度监测和数值模拟方法,研究了地埋管换热器孔间距和地源热泵系统10 a运行的时间效应,获得了南京侵蚀堆积平原地区地埋管换热器孔合理间距和运行方式。结果显示:(1)夏季工况、夏季后恢复工况、冬季工况、冬季后恢复工况的完整运行周期内,地层温度经历升温、降温、缓慢降温、基本恢复的周期性变化;(2)南京侵蚀堆积平原地区经济合理的地埋管换热器孔间距为4.0 m;(3)采取夏季制冷时间和冬季制热时间相等的运行方式,延长夏季后恢复工况,可确保地源热泵系统长期稳定运行。结果能为南京地区地埋管的设计和浅层地热能工程研究提供科学依据。

       

      Abstract: The reasonable design of hole spacing for buried heat exchangers is the first issue to be solved when developing shallow geothermal energy in the Nanjing erosion and accumulation plain area. In order to obtain the hole spacing for design reference and ensure ground-source heat pump system to operate long and stably, based on the ground-source heat pump test project at No. 102 Shimenkan, Qinhuai District of Nanjing, the hole spacing of ground heat exchanger and time effect of 10-year operation with ground-source heat pump system have been studied with the temperature monitoring system and numerical simulation method, and the hole spacing of ground heat exchanger and the operation mode have been obtained. The results show that : (1) during the complete operation cycle of summer, post summer recovery, winter and post winter recovery working conditions of ground-source heat pump system, formation temperature undergoes periodic change of heating, cooling, slow cooling and basic recovery. (2) The economical and reasonable hole spacing of ground heat exchanger is 4.0 meters suitable for the erosion accumulation plain of Nanjing. (3) In order to eliminate the heat accumulation during the summer working condition and promote the service life of ground-source heat pump system, the operation mode of equal cooling time in the summer and heating time in the winter is suggested, and the post summer recovery working condition is extended as much as possible. This study can provide scientific basis for the design of buried pipes and shallow geothermal energy engineering research in the Nanjing area.

       

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