Heat-Driven Vapor Compression Refrigeration System Development Using Automotive Turbomachinery. Final Report, Volume 1, June 1987-September 1990

摘要

An automotive turbocharger was adapted for operation in a closed-loop, semi-hemetic vapor compression refrigeration system using Refrigerant 114. An instrumented test loop comprising the system was constructed. The test loop incorporated a modulated, gas-fired steam boiler as a heat source and a cooling tower as a heat sink. Refrigeration was effected in the form of chilled water which was thermally managed by heat exchange with cooling water. Turbine and compressor discharges were connected to a common water-cooled condenser via a recuperator for thermal performance enhancement. A common receiver supplied condensed liquid refrigerant to the boiler (high side) and evaporator (low side) via a subcooler heat exchanger and a variable speed electrically-driven regenerative pump and a microprocessor-controlled, pneumatically actuated expansion valve respectively. The system also incorporated an oil supply system for the turbocharger bearings. Following exploratory testing and loop refinement, heat balances were established and a series of parametric performance tests were run. Compressor instability was experienced at conditions approaching ARI standard Water Chiller rating point.