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| | Abstract | | An experiment on greenhouse cultivation in winter season was conducted using remaining heat after bath use as heat source. The heat source is thermally exchanged with the circulatory normal water, which is increased by temperature, then flowed to the evaporator in order to transmit heat to the refrigerant. Next, the refrigerant heated by the compressor is thermally exchanged in the condenser with the circulatory water, which is heated up to the proper temperature. The warmed water flows in the radiator tube to heat in the soil and the green-house. In this experiment, the radiator tube is horizontally installed 60 centimeters below soil surface and examined the effect of soil heating and the behavior of heat transmission, with planting four kinds of crops. This research is co-operatively done for an Oga-city project of Ministry of Internals and Communications. |
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