Hybrid cooling system for electronics module

摘要

A d.c. motor together with a hot gas bypass valve is incorporated into a cooling system specifically designed for removing heat from a computer system. Unlike typical refrigeration systems, the cooling system herein runs continuously and responds to changes in thermal load. This allows the unit to operate within a wide range of ambient conditions and at various thermal load levels unlike other systems which were capable of operation only at a single, pre-designed load level. The cooling system is modular and is easily added to or removed from a redundant system which includes a single evaporator with multiple refrigerant loops which provides yet another aspect of continuous operation due to the inherent redundancy thus provided. In one embodiment, the cooling system includes a refrigeration cooled cold plate thermally coupled to an electronic module of a computer system, and an auxiliary air cooled heat sink thermally coupled to the refrigeration cooled cold plate.