Integrated Vapor-compression Heat Pump Spacecraft Heat Rejection System

Period of Performance: 02/15/1990 - 02/15/1992


Phase 2 SBIR

Recipient Firm

Mainstream Engineering Corporation
200 Yellow Place Array
Rockledge, FL 32955
Principal Investigator


An innovative heat pump thermal management system has been designed and is being built and tested. The design uses a compressor rather than a conventional pump to transport the working fluid around the loop, providing improved system reliability and performance. This system constitutes up to 28% less mass than conventional thermal management systems, and uses 28-58% less radiator area. In addition to spacecraft thermal management, this system may have application in military air and ground vehicles, or potentially in commercial two-phase system thermal control.