地中熱交換型ソーラー温室のダクトにおける熱移動特性に関する研究

概要

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The air temperature in a greenhouse on sunny day often exceeds the optimun temperature level for the growth of crops. A greenhouse with an underground heat exchange system which utilizes this excess heat is constructed. Performance tests were carried out and following results were obtained. Performance tests were conduted from Dec. 1, '89 to Mar. 31, '90 and from Dec. 1, '90 to Mar. 31, '91 and it was fand that the room temperature is kept above 10℃.even when the outdoor temperature at nigth is 5℃. If the solar insolation in daytime is small, the heat stored before that day is utilzed at night. Therefore, the storage unit deep underground is useful as a long term heat storage unit. Comparison of the experimental results with the calculated results is made. Temperature variations of simulation calculation about the greenhouse almost accorded with the experimental results.
1992-03-20