| 摘要 |
PURPOSE:To save a surplus electrical energy and prevent a loss of accumulated heat by a method wherein a water to air convection flow type heat exchanger is installed as a heat collector/heat radiation unit and a connection type heat accumulation tank is installed as a heat accumulation unit, and they are connected with each other by pipings. CONSTITUTION:The drawing illustrates an operation flow diagram for showing a day-time heat collecting operation in which a heat exchanger 1, a circulation pump 8 and a control unit 6 are arranged in the greenhouse as a heat collector/heat radiation unit, and connection type heat accumulation water tanks B, B are arranged as a heat accumulation unit, and they are connected by pipings C, C', and then change-over valves D, D' are arranged. The heat exchanger unit 1 is made of hollow type at its central part. At the outer side of the inner circumference of the heat exchanger are installed at a room temperature sensor 5, sensors E, E' mounted on the heat accumulation water tank, a blower fan 2, a circulation pump and a control unit 6 for in controlling an auxiliary heating source. The circulation pump causes a flow rate in the piping to be varied and further a flow in the heat accumulation water tanks B, B' is enabled to be changed over to a normal flow or reverse flow under the operation of the change-over valves D or D'. |
