Self-contained Solid-vapor Heat Pump Cycles for Central Heat Transfer Bus

Period of Performance: 11/01/1992 - 11/01/1994


Phase 2 SBIR

Recipient Firm

Rocky Research
1598 Foothill Dr
Boulder City, NV 89006
Principal Investigator

Research Topics


Rocky Research will construct a 1 to 3 kW complex compound-based heat pump with applications toward a space born thermal management system. The device is based on a heat-driven sorption cycle using ammonia as the refrigerant and metal salts as the sorption media. Complex compounds were chosen as working media because they exhibit available to the process. Power densities in excess of 2 kW/kg have been obtained. For temperature lifts up to 40K, coefficients of performance COPc=1.45 and COPh=2.5 can be reached in a waste heat actuated system with no moving parts and therefore no parasitic power requirements. The hardware will be designed to evaluate both single stage high lift (up to 100K) as well as high efficiency operation.