摘要
针对地埋管地源热泵系统长期运行造成土壤热堆积的问题,建立了基于内热源理论的竖直双U地下埋管换热器模型;对不同井群规模在两种土壤吸放热比的工况下进行了数值模拟,得出了地源热泵系统间歇运行10年后的土壤温度变化规律.通过分析土壤温度不同分布情况研究了井群规模对土壤热堆积的影响,并提出了大规模井群量化概念,对较大规模地埋管地源热泵系统的设计和管理起到良好的参考作用.
For soil heat accumulation caused by long-term operation of ground source heat pump （GSHP）system, the model of vertical double U ground heat exchangers （GHE） based on inner heat source theory has been established. Numerical simulations have been carried out on different well groups under two kinds of soil heat absorption and heat releasing ratio ,and changes of soil temperature within 10 years ,after intermittent operation of GSHP system is obtained. By analyzing different distribution of soil temperature ,the influence of well group＇s size on the soil heat accumulation has been studied and the quantitative concept of large-scale well group has been proposed ,which has a good reference value for design and management of relatively larger scale GSHP system.
作者
郭春梅
汤本霖
白莹霜
由玉文
马玖辰
GUO Chunmei TANG Benlin BAI Yingshuang YOU Yuwen MA Jiuchen(School of Energy and Safety Engineering, TCU, Tianjin 300384, Chin)
出处
《天津城建大学学报》
2017年第4期273-278,共6页
Journal of Tianjin Chengjian University
基金
国家自然科学基金(41402228)
住房和城乡建设部科研开发项目(2016-K1-022)
关键词
地源热泵
土壤温度
热堆积
井群规模
内热源
数值模拟
ground source heat pump （ GSHP ）
soil temperature
heat accumulation
well group scale
inner heat source
numerical simulation
