Vaporization-cooled electrical apparatus

摘要

A heat storage system provides overload capacity for a vaporization-cooled electrical apparatus. An external housing, containing a heat storage fluid, is disposed around a fluid conductor connecting a non-condensable gas storage reservoir and the radiator of a vaporization-cooled electrical apparatus. At normal loads, the non-condensable gas is contained within the fluid conductor and the storage reservoir thereby thermally isolating the storage fluid from the hot vapors contained within a radiator which keeps the storage fluid at ambient temperatures. A pressure increase, caused by an overload, compresses the non-condensable gas into the storage reservoir and allows the hot vapors to flow into a portion of the fluid conductor surrounded by the external housing whereby heat is dissipated from the hot vapors to the storage fluid contained within the external housing. Additional heat storage capacity is provided by a pressure relief valve in the external housing which allows the storage fluid contained therein to reach its boiling point and vaporize.