寒冷地区日光温室水平地埋管蓄热效果研究  

Research on Heat Storage Effect of Horizontal Underground Pipe in Solar Greenhouse in Cold Area

作　　者：于涛[1] 王冬菊 王英华[2] Yu Tao;Wang Dongju;Wang Yinghua(Department of Thermal Engineering,Shandong Jianzhu University,Jinan 250101,China;Shandong Academy of Agricultural Sciences,Jinan 250100,China)

机构地区：[1]山东建筑大学热能工程学院,济南250101 [2]山东省农业科学院,济南250100

出　　处：《农机化研究》2022年第3期248-258,共11页Journal of Agricultural Mechanization Research

基　　金：山东省自然科学基金项目(ZR2019MEE083)。

摘　　要：为研究寒冷地区日光温室应用太阳能土壤增温系统的地温变化情况和土壤蓄热效果,利用ICEM建立了二维水平埋管土壤蓄热物理模型,并基于试验工况运用FLUENT对典型日水平埋管与土壤的非稳态传热进行了数值模拟。结合试验数据和数值模拟进行分析,结果表明:白天土壤蓄积的热量可以保持夜间至次日系统运行前的土壤最低温度在10cm深处为13.09℃,15cm深处为15.3℃,30~60cm深处在16℃以上,可避免因土壤低温导致喜温蔬菜番茄生长受到抑制;太阳能土壤增温系统对日光温室土壤具有一定的加热效果,在其适用范围内应进行推广应用。In order to study the ground temperature change and soil heat storage effect of solar soil warming system applied in cold areas,A two-dimensional physical model of soil heat storage with horizontal buried pipes was established by using ICEM.Based on the experimental conditions,the unsteady heat transfer between horizontal buried pipe and soil was numerically simulated by using FLUENT.Combined with experimental data and numerical simulation,the results show that the heat accumulated in the soil during the day could keep the lowest soil temperature from night to the next day before the operation of the system,which was 13.09℃ at the depth of 10cm,15.3℃ at the depth of 15cm and above 16℃ at 30~60cm depth,thus avoiding the inhibition of the growth of warm-loving vegetable tomatoes caused by low soil temperature.Solar soil warming system has a certain heating effect on soil in solar greenhouse,and should be popularized and applied in its applicable scope.

关 键 词：水平地埋管 日光温室 温度场 运动仿真 数值模拟 

分 类 号：S625.4[农业科学—园艺学]