| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide agricultural closed space facilities such as a plastic greenhouse, using a heating method using no heavy oil and keeping cost low, in view of the fact that a fuel cost and a transportation cost increase in price caused by crude oil steep rise, rise in price spreads to agricultural materials, and maintenance and management costs, and when viewing from an aspect of effective use of an agricultural land, it is expected that the production of a plastic greenhouse further becomes common, but the present condition is that there are circumstances where the production of a greenhouse becomes impossible because of steep rise in heavy oil for heating, and to provide an energy-saving managing method. <P>SOLUTION: The agricultural closed space facilities such as a plastic greenhouse is attached with a heat pump. Furthermore, a pipe is laid on soil in the closed space facilities, the soil is temperature controlled by a refrigerant or hot water sent from the heat pump, and plants vegetated in the soil are activated. The vegetated plants are protected from an external environment without using heavy oil at an energy cost at a fraction of a conventional energy cost. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
