摘要
应用气象学方法和传热传质理论,建立考虑气象因素和土体传热共同作用的大气-土壤相互作用模型;针对桂林红粘土地层,模拟分析气象波动对水平埋管换热器传热的影响。研究结果表明：1）在1.0～2.0 m埋深范围内,水平埋管换热器的换热效果明显受到地表气象波动的影响,大气温度、蒸发、辐射是主要因素;2）对于红粘土地层,降雨形成的浅层渗流对换热效果的提高幅度约为5.6%;3）通过开展不同设计埋深及埋管间距的换热效果分析,确定桂林红粘土地区水平埋管布置方式的合理值：埋深为2.5 m,埋管间距为2.0 m。
It is a significant impaction for meteorological fluctuation on heat transfer process between horizontal heatexchanger and rock soil. With meteorological method and heat transfer theory,the atmosphere-soil interaction modelwith considering the meteorological factors and soil heat transfer is established. Then,the effect of meteorologicalfluctuation on horizontal heat exchanger is simulated according to the red clay layers in Guilin. The results showed thatthere is an obvious impaction for meteorological fluctuation on the heat exchange effect of horizontal heat exchangerwhich is buried with the depths of 1.0-2.0 m,and the dominant impact factors are air temperature,evaporation,andsolar radiation. Based on measured meteorological data,it is found with numerical simulation that the heat exchangeeffect can improve about 5.6% by the shallow layer seepage due to rainfall for red clay. By analysis of heat exchangeeffect of pipes with different buried depth and spacing,it is found the optimal arrangement mode of horizontal buriedpipes in red clay,and the buried depth is 2.5 m and the spacing is 2.0 m.
作者
曾召田
赵艳林
吕海波
莫红艳
蒙剑坪
Zeng Zhaotian;Zhao Yanlin;Lyu Haibo;Mo Hongyan;Meng Jianping(Guangxi Key Laboratory of New Energy and Building Energy Saving （ Guilin University of Technology）, Guilin 541 oog, China;College of Civil Engineering, Guangxi University, Nanning 530004, China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2018年第5期1179-1186,共8页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(51568014
41502284)
广西自然科学基金(2013GXNSFBA019233)
广西建筑新能源与节能重点实验室资助项目(桂科能17-J-21-2)
关键词
地源热泵
气象波动
水平埋管换热器
大气-土壤相互作用模型
数值模拟
ground-source heat pump
meteorological fluctuation
horizontal heat exchanger
atmosphere-soil interaction model
numerical simulation
