| 摘要 |
<p>PURPOSE:To provide a plant raising system using artificial light of energy saving type, low in heat loss due to controls such as for reheating and rehumidification, thus improved in thermal efficiency. CONSTITUTION:A plant growing house 1 is partitioned into a plant growing chamber 5 and an utility chamber 6, an air-circulating channel is formed, and the air-circulating channel on the side of the utility chamber 6 is equipped with a blower 10, a heat exchange coil 11 and a humidifier 12. An air conditioner 9 switches the cooling medium and hot gas for direct expansion-type refrigerating cycle through an electromagnetic valve on the inlet side at time resolution proportional period to control the cooling operational level at the heat exchange coil 11 to control temperature. A lamp unit 7 equipped with a microwave lamp for visible ray radiation mounted on the ceiling site inside the plant growing chamber 5 cools the heat generated from a light source through the circulating air from the air conditioner 9 and returns the air after cooling to the air circulating channel and can serve it as part of fresh air.</p> |
