Thermal Control System for Space Station Freedom Photovoltaic Power Module 921110

The electric power for Space Station Freedom (SSF) is generated by the solar arrays of the photo-voltaic power modules (PVM's) and conditioned, controlled, and distributed by a power management and distribution system. The PVM's are located outboard of the alpha gimbals of SSF. A single-phase thermal control system is being developed to provide thermal control of PVM electrical equipment and energy storage batteries. This system uses ammonia as the coolant and a direct-flow deployable radiator. This paper presents the description and development status of the PVM thermal control system.


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