| 摘要 |
PURPOSE:To realize a two-pipe type fan coil unit system, which supplys and stops cold water and hot water in the same manner as a four-pipe type fan coil unit system and performs appropriate judgement for supplying and stopping, by controlling with a computer. CONSTITUTION:An air conditioning system is composed of two-pipe type fan coil units, each of which is arranged in each room of a building and to each of which a cold/hot water supplying pipe and a return pipe are connected. The months of a year, in which the changing-over of water flowing through coil from cold water to hot water and that from hot water to cold water are performed, the time zones in a day of said months, in which the changing-over of water flowing through coil from cold water to hot water and that from hot water to cold water are performed and the like, are inputted in advance to the central processing unit in the air conditioning system. Further, various conditions such as the outside air temperatures, the rising and falling gradients of room temperature, the differences between the feed and return temperatures of cold and hot waters, and the like are inputted to the central processing unit. consequently, the changing-over between cold water and hot water can be performed efficiently and appropriately. |
