| 摘要 |
PURPOSE: A heating device for a greenhouse is developed for selectively circulating hot water and providing heat even to edge of the greenhouse to prevent the external cold air from flowing inside. CONSTITUTION: A heating device for a greenhouse is operated by blocking the supply of hot water to agricultures in case central temperature is reached to desired temperature, and then directing the blocked hot water toward to a pipe at the edge of the house to prevent the external cold air from entering into the house. In order to perform this operation, the device comprises a hot water injection pipe, a distribution pipe at one end of the injection pipe, a collecting pipe to hold circulating water and several heating pipes between the distribution pipe and the collecting pipe, are connected in parallel at a regular interval. |
