地埋管地源热泵岩土热响应试验准确性影响因素分析  

Influence factor analysis of geotechnical thermal response test accuracy for ground-coupled heat pumps

作　　者：李锦堂 杨灵艳 孙宗宇 徐伟 李骥 冯铁栓 乔镖 Li Jintang;Yang Lingyan;Sun Zongyu;Xu Wei;Li Ji;Feng Tieshuan;Qiao Biao(China Academy of Building Research,Beijing,China;不详)

机构地区：[1]中国建筑科学研究院有限公司/建科环能科技有限公司,北京100013

出　　处：《暖通空调》2020年第8期40-47,共8页Heating Ventilating & Air Conditioning

基　　金：中国建筑科学研究院有限公司青年基金课题“岩土热物性参数准确辨识影响因素研究”(编号:20190109331030016);住房和城乡建设部软科学研究项目“可再生能源多能互补在公共建筑中高效应用关键技术研究”(编号:2019-K-036)。

摘　　要：建立了岩土热响应试验动态仿真模型,通过试验验证了模型的准确性。基于线热源模型数据处理方法,量化分析了不同影响因素对模拟结果准确性的影响规律。结果表明:为保证测试结果的准确性,试验持续时间不应短于72 h;测试前期数据删除不应少于12 h的数据;管内应维持旺盛湍流;应尽量提高加热功率的稳定性,否则应采用其他的数据处理方法。Establishes a dynamic simulation model of geotechnical thermal response test,and verifies the accuracy of the model by experiments.Based on the data processing method of linear heat source model,analyses quantitatively the influence rules of different influence factors on the accuracy of the simulation results.The results show that,in order to ensure the accuracy of the test results,the test continues 72 hours at least,the deletion length of data in the early stage of the test is more than 12 hours,the strong turbulent flow is maintained in the pipe,and the stability of heating power shall be improved as much as possible,otherwise other data processing methods ought to be adopted.

关 键 词：地埋管换热器 岩土热响应试验 准确性分析 线热源模型 仿真计算 

分 类 号：TU83[建筑科学—供热、供燃气、通风及空调工程]