热渗耦合作用对温室埋管加热土壤的传热影响  

Research of the Effect of Heat and Permeability on the Heat Transfer of the Soil in the Greenhouse

作　　者：张晶[1] 吕建[1] 

机构地区：[1]天津城建大学能源与安全工程学院,天津300384

出　　处：《天津城建大学学报》2016年第6期432-436,共5页Journal of Tianjin Chengjian University

摘　　要：考虑到植物灌溉时,水流动对日光温室浅层地中热水管增温土壤效果的影响,建立了温室土壤加热埋管及周围土壤的热渗耦合模型;研究水渗流对地埋管加热土壤温度场分布的影响.结果表明:埋管埋深、平均进回水温度和管间距对埋管加热土壤的影响显著,管道内水流速≥0.10,m/s时,埋管上层温度变化不大.Considering plant irrigation and the effect of seepage on heating pipe in the shallow layer of the solar greenhouse,the thermo osmotic coupling model of soil heating pipe and surrounding soil is established. The effects of theseepage on buried heating pipe to soil temperature distribution are analyzed. The results show that the buried depth,the average return water temperature and the distance of the pipe spacing have significant effects on the surface temperature. When the water flow rate is greater than or equal to 0.10 m/s,the upper pipe temperature changed little.

关 键 词：日光温室 热渗耦合 地埋管道 多孔介质 数值模拟 

分 类 号：TK513[动力工程及工程热物理—热能工程]