岩土导热系数对集群地热换热器分区运行的影响  

Effect of geotechnical thermal conductivity on zonal operation of cluster geothermal heat exchangers

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作  者:贺泽群 刘斯佳 郭梦雪 He Zequn;Liu Sijia;Guo Mengxue

机构地区:[1]山东省轻工业设计院有限公司

出  处:《洁净与空调技术》2024年第3期69-72,共4页Contamination Control & Air-Conditioning Technology

摘  要:地埋管换热器作为地源热泵的重要组成部分,其换热效率可以直接影响到整个热泵机组的运行效率。对于大部分地区,当地源热泵长期运行时,由于冬夏季负荷的不平衡造成了土壤的冷/热量累积,为减缓这一效应,通常可以采用分区运行的方式,而土壤的条件不同也会对分区运行产生影响。因此,从土壤的导热系数入手,利用C++进行编程模拟,研究不同的导热系数对集群地埋管换热器分区运行的影响。研究表明:采用分区运行可有效缓解埋管中心区域热量累积,同时,岩土导热系数较小的区域采用分区运行效果越显著。As an important part of ground source heat pump,the heat transfer efficiency of buried tube heat exchanger can directly affect the operation efficiency of the whole heat pump unit.For most areas,the long-term operation of local source heat pump(LSHP)results in the accumulation of cold/heat in the soil due to the unbalanced load in winter and summer.In order to alleviate this effect,zoning operation is usually adopted,and different soil conditions will also affect the zoning operation.Therefore,starting from the thermal conductivity of soil,this paper uses C language to program,and studies the influence of different thermal conductivity on the zoning operation of cluster ground heat exchangers.The results show that the zoning operation can effectively alleviate the heat accumulation in the central area of buried pipes,and the more remarkable the zoning operation effect is in the areas with smaller thermal conductivity of rock and soil.

关 键 词:地源热泵 地埋管 分区运行 导热系数 

分 类 号:TU83[建筑科学—供热、供燃气、通风及空调工程]

 

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