Design and component testing of a low-temperature waste-heat-driven refrigeration system, phases 1 and 2
Abstract
The design and the component testing of a 20 ton refrigeration system powered by 140 F waste heat was completed. A major advantage of such a system is that essentially all operating power comes from the waste heat with only minor injections of auxiliary power. This Rankine-Rankine system uses R-22 for both power and refrigeration cycles. A single semihermetic housing contains the expander, compressor, feed pump, and motor/generator. The integral induction motor/generator acts as a starter, makes up shaft power deficits, absorbs shaft power surpluses, and provides overspeed protection. Experiments determined that 0.0015 in. is the optimum axial clearance for the gerotor R-22 evaporator feed pump to minimize both friction and backleakage, that oil injection to the pump had no effect on either friction or backleakage, and that a centrifugal inducer was needed to prevent cavitation under certain operating conditions.
- Publication:
-
Progress Report Foster-Miller Associates
- Pub Date:
- March 1982
- Bibcode:
- 1982fmai.rept.....H
- Keywords:
-
- Rankine Cycle;
- Refrigerating Machinery;
- Waste Energy Utilization;
- Brines;
- Component Reliability;
- Design Analysis;
- Heat Pumps;
- Optimization;
- Energy Production and Conversion