摘要
能量桩作为地源热泵的一种特殊形式,现有的换热理论不适合于非饱和土中的桩。以圆柱源换热理论为基础,推导了非饱和土中能量桩换热解析模型,建立了饱和度与能量桩换热比率的函数关系,对饱和度与土体有效导热系数现有计算模型进行了比较分析,并通过室内模型试验,验证了所构建换热模型的适用性。
As a special type of geothermal energy system,the conventional heat transfer theory can not be applied to energy pile when embedded in unsaturated soil.Based on the theory of cylindrical source heat transfer,an analytical model of energy pile heat transfer in unsaturated soil was deduced,and the functional relationship between saturation and heat transfer ratio of energy pile was established.The heat transfer model was compared with the existing calculation models of saturation and soil effective thermal conductivity,and its applicability was verified by indoor model tests.
作者
史宏财
裴尧尧
SHI Hong-cai;PEI Yao-yao(School of Civil Architecture and Environment, Hubei University of Technology,Wuhan 430068, China)
出处
《科学技术与工程》
北大核心
2020年第12期4833-4837,共5页
Science Technology and Engineering
基金
湖北省教育厅科学技术研究计划青年人才项目(Q20181405)。
关键词
能量桩
圆柱源理论
非饱和土
换热模型
energy pile
cylindrical source theory
unsaturated soil
heat transfer model
