摘要
地埋管换热器的设计直接决定地源热泵系统的合理性及其经济效益,对地埋管换热器进行合理设计的基础是获得准确的岩土体热物性参数,常用的方法是进行现场热响应试验。介绍了热响应试验的发展及热响应试验仪的工作原理;综述了在进行热响应试验时涉及到的几个重要参数:岩土体初始平均温度、加热功率、循环工质流速和热响应时长;总结了热响应试验的换热模型:线热源模型、柱热源模型和数值模型。在此基础上提出了相关的研究建议。
The design of ground heat exchanger directly determines the rationality and economic benefits of the ground-source heat pump system.The reasonable design of ground heat exchanger is based on accurate thermophysical properties of rock and soil.The commonly used method for obtaining thermophysical properties of rock and soil is to conduct in-situ thermal response test.Presents the development of thermal response test and the working principle of testing instrument.Reviews several important parameters involved in the thermal response test,including initial average temperature of rock and soil,heating power,circulating working medium velocity and thermal response duration.Summarizes heat transfer models of the thermal response test,including linear heat source model,column heat source model and numerical model.On this basis,puts forward some relevant research suggestions.
作者
李鹏
郑雨
李杭哲
刘航
段新胜
Li Peng;Zheng Yu;Li Hangzhe;Liu Hang;Duan Xinsheng(China University of Geosciences,Wuhan,China)
出处
《暖通空调》
2019年第5期27-33,共7页
Heating Ventilating & Air Conditioning
关键词
热响应试验
岩土体热物性
传热模型
地埋管换热器
地源热泵系统
thermal response test
thermophysical property of rock and soil
heat transfer model
ground heat exchanger
ground-source heat pump system
