地中蓄熱型ソーラー温室に関する研究

概要

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Heat storage in soil and its recovery are examined by indoor tests and the results are proved by a practical greenhouse, in order to study the effective utilization of the excess heat which is often produced in a solar greenhouse on a sunny day. Influence of the degree of the water saturation of the soil and the temperature of the circulating air on the heat storage and recovery are studied by the indoor tests, and the effect of the growing crops is examined by the practical greenhouse. As the degree of water saturation of the soil or the temperature of the circulating air increases the heat, transmission to the soil increases. But the soil near the heating surface becomes dry and the heat transfer decreases with time. Without crops the radiant energy into the practical greenhouse dominantly transmitted through the underground duct is smaller compared with those with crops. On the other hand, in the case that incident energy is isolated by the crops, the heat transfer through the underground duct surface is active and the soil surrounding the ducts work as the effective heat storage matter.
近畿大学工業高等専門学校の論文
1996-11-01