Analysis on measurement of heat absorption and release of wall and ground in solar greenhouse

被引：0
|
作者：
Li J. [1 ,2 ]
Bai Q. [2 ]
Zhang Y. [2 ]
机构：
[1] School of Horticulture, Northwest Agriculture and Forest University
[2] School of Agriculture, Ningxia University
来源：
Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering | 2010年 / 26卷 / 04期
关键词：
Greenhouses; Ground; Heat exchangers; Heat release; Walls;
D O I：
10.3969/j.issn.1002-6819.2010.04.039
中图分类号：
学科分类号：
摘要：
The study observed heat release of soil back wall and ground of greenhouse, and measured surface temperature and heat flux of soil back wall both in sunny days and cloudy days. The result showed that heat release of per unit wall area and ground surface had a close relationship with solar radiation in greenhouse. The heat release of per unit wall area was 1.90 MJ/m2 at night in sunny days, and the heat release of ground was 1.36 MJ/m2; while the heat release of per unit area was 0.76 MJ/m2 at night in cloudy days, and the heat release of ground was 1.34 MJ/m2. During sunny days, the heat release of wall was greater than that of ground, while the heat release of ground was greater than that of wall in cloudy days. No matter it is on sunny days or cloudy days, the total amount of heat release was greater than that of wall, moreover, the ground buffer of cycle heat changing is better than the wall.
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页码：231 / 236
页数：5
相关论文
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