[1]杨茂林,杜震宇.土壤-空气换热器地埋管周围土壤动态的热湿迁移规律[J].华侨大学学报(自然科学版),2019,40(1):79-84.[doi:10.11830/ISSN.1000-5013.201804087]
　YANG Maolin,DU Zhenyu.Experimental Study on Dynamic Heat and Moisture Migration Law Around Earth-to-Air Heat Exchanger Ground Tubes[J].Journal of Huaqiao University(Natural Science),2019,40(1):79-84.[doi:10.11830/ISSN.1000-5013.201804087]
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土壤-空气换热器地埋管周围土壤动态的热湿迁移规律()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第40卷
期数:
2019年第1期
页码:
79-84
栏目:
出版日期:
2019-01-20

文章信息/Info

Title:
Experimental Study on Dynamic Heat and Moisture Migration Law Around Earth-to-Air Heat Exchanger Ground Tubes
文章编号:
1000-5013(2019)01-0079-06
作者:
杨茂林;  杜震宇
太原理工大学 环境科学与工程学院, 山西 太原 030024
Author(s):
YANG Maolin;  DU Zhenyu
College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
关键词:
土壤-空气换热器;  热湿迁移;  耦合作用;  湿度分层
Keywords:
earth-to-air heat exchanger;  heat and moisture migration;  coupling effect;  moisture stratification
分类号:
TK124
DOI:
10.11830/ISSN.1000-5013.201804087
文献标志码:
A
摘要:
以调节日光温室内环境的土壤-空气换热系统为背景,开展白天降温、夜晚升温两种不同工况下的试验,从而探究地埋管周围轴向和径向上的温度、湿度迁移规律.研究结果表明:昼夜温差大的情况下,土壤的热饱和程度会随之产生周期性变化,土壤中蓄放热状态的差异性也会引起温度、湿度分布的动态变化;土壤-空气换热器作用下的土壤热湿耦合的作用明显,温度梯度对湿分迁移有一定的推动作用,产生的湿度梯度同时也会影响温度分布;土壤-空气换热器对土壤的影响主要表现为径向上的变化,即在竖直方向上产生明显的湿度分层及温度变化,且距离换热管越近,变化幅度越大,变化趋势也越显著.
Abstract:
With the background of adjusting the earth-to-air heat exchange system in the environment of the solar greenhouse, experiments were conducted during daytime cooling and nighttime heating under two different conditions to investigate the axial and radial migration patterns around the ground tube. The experimental results show that: when the temperature difference between day and night is large, the degree of thermal saturation of the soil will change periodically, and the difference in the state of heat release between the soil and the heat will also cause a dynamic change in the temperature and humidity distribution. The soil temperature and humidity distribution under earth-to-air heat exchanger changes significantly, and the coupling between heat and moisture is significant. The temperature gradient has a certain role in promoting the migration of moisture, and the generated moisture gradient will also affect the temperature distribution. The effect of earth-to-air heat exchangers on the soil is mainly radial, that is, there is obvious humidity stratification and temperature change in the vertical direction, and the closer the distance to the heat source is, the greater the span of change will be,as well as the change tendency more obvious.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2018-04-27
通信作者: 杜震宇(1964-),男,教授,博士,主要从事建筑节能方面的研究.E-mail:dsdd2004@163.com.
基金项目: 国家自然科学基金资助项目(51476108)
更新日期/Last Update: 2019-01-20