Patent ID: 6866092
Filing Date: 2005-03-15
Classification: F01L,F01P,F02B,F02F,F25B,Y02T

Abstract:
1. A heat-transfer system, in a gravitational field, for absorbing heat from one or more heat sources, and for transferring the absorbed heat to one or more heat sinks, wherein the system includes an airtight configuration, and wherein none of the one or more heat sources is an electrical apparatus having windings electrically insulated even in part by an inert gas inside the airtight configuration; the airtight configuration having (1) a refrigerant principal configuration comprising: (2) supplementary-configuration means for ensuring the total pressure inside at least a part of the one or more refrigerant circuits of the principal configuration is maintained, for at least a part of the time during which the refrigerant principal configuration is inactive, at or above a preselected minimum pressure having a value higher than the lowest value of the refrigerant's one or more saturated-vapor pressures corresponding to the lowest temperature experienced by the refrigerant while the principal configuration is inactive; the supplementary-configuration means allowing said value to differ from the current value of the ambient atmospheric pressure, and the supplementary-configuration means comprising one or more controllable means.