Solar heating for greenhouse

被引：0
|
作者：
Li, Dejian [1 ]
Tang, Xuan [1 ]
Yin, Zhiqiang [1 ]
Zheng, Ruicheng [2 ]
Zhang, Yuming [3 ]
Li, Naiguang [3 ]
机构：
[1] Tsinghua Solar Energy Devmt. Co., Beijing 100084, China
[2] China Acad. of Building Res., Beijing 100013, China
[3] Beijing Jushan State Farm, Beijing 100093, China
来源：
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2002年 / 23卷 / 05期
关键词：
Glass - Heat losses - Solar collectors - Solar heating;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
An experimental study on solar heating for a large greenhouse using all-glass evacuated tubular collectors was carried out in winter. The roof of greenhouse consists of four arcs. The heat loss coefficient of green-house is 8.37 W/m2&bull°C. The ratio of the solar collector area to the greenhouse area is 1:6. The daily lowest ambient temperature was above -4°C before the middle of December 2000. After the middle of February 2001, the solar active heating together with the solar passive heating could keep the indoor temperature about 5°C without oil heater, and the average solar fraction was 26%. Between the middle of December 2000 and the middle of February 2001, the solar collector system with oil heater with an average solar fraction of 10%.
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页码：557 / 563
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