| 摘要 |
PROBLEM TO BE SOLVED: To reduce the exhaust heat of a transforming apparatus and reduce the capacity or size of the cooling tower of a water-cooled transformer, and suppress the operation power of a blower, etc., as well. SOLUTION: A conventional cooling system, including a cooler 2 and a cooling tower 3 of a water-cooled transformer 1 is provided with a heat exchanger 6, and a second cooling system is annexed to it. The second cooling system has a freezer 12 and a heat cumulating tank 26. The freezer 12 is operated at night, and the heat exchanger 5 is supplied with circulating water on the side of a condenser 14, and makes use of the latent heat of vaporization of a refrigerant on the side of a vaporizer, the cooled low-temperature cold water is sent to and reserved in a water-receiving tank 19. During a high load zone in the daytime, a switching valve 24 is closed, and a switching valve 25 is opened to supply the heat exchanger 6 with low-temperature cold water, thus reducing the heat load of the cooling tower 3.
|
