Prepared for: 1998 ACEEE Summer Study
Report dated: August 31, 1998
Prepared by Proctor Engineering Group
Contributor: John Proctor, P.E.
For the study, a 3-ton unit was built, instrumented, and tested in the laboratory under a variety of climate, service, and installation conditions. The system proved it could meet peak cooling needs with reduced power; it achieved peak reduction by maintaining a higher rate of efficiency at high outdoor temperatures than typical air conditioners are able to achieve.
The system also maintained this efficiency advantage when operated under adverse refrigerant charge and air flow conditions. Residential customers using a similarly designed system would consume 11-20% less energy annually, compared to typical SEER-10 units, and the utility would achieve a diversified peak reduction of 500W. The prototype would cost approximately $190 more than a standard SEER-10 unit and approximately $265 less than a typical SEER-12 unit.
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