| 摘要 |
PROBLEM TO BE SOLVED: To stabilize temperature of a recovered radiating thermal medium.SOLUTION: A heat storage tank 1 includes heating means 3 at a bottom part of an internal space having heat storage material 2 stored therein, and a plurality of radiating heat transfer pipes 4a, 4b, 4c in an upper part of the internal space. The radiating heat transfer pipes 4a, 4b, 4c are connected in parallel with a distribution pipe 6 at an upstream side through respective valves 7a, 7b, 7c, and connected in parallel with a collecting pipe 9 at a downstream side. To carry out heat radiation, when an amount of heat storage in the heat storage tank 1 is high, only the valve 7a is opened to flow a total amount of a radiating thermal media 5 to one radiating heat transfer pipe 4a. A temperature of the radiating thermal media 5 recovered by the heat storage tank 1 is measured by a thermometer measuring unit 11. When the temperature lowers, the valves 7b, 7c are sequentially opened, thereby sequentially increasing a number of the radiating heat transfer pipes 4a, 4b and 4c through which the radiating thermal media 5 flows, and expanding a heat transfer area between the heat storage material 2 and the radiating thermal media 5 to restrict a variation in a heat radiation speed.SELECTED DRAWING: Figure 1 |
