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- [2] HEAT-PUMP WATER HEATERS - A COMMENT ON FACTORS AFFECTING OPERATING COP ASHRAE JOURNAL-AMERICAN SOCIETY OF HEATING REFRIGERATING AND AIR-CONDITIONING ENGINEERS, 1983, 25 (12): : 70 - 70
- [9] A REGIONAL COMPARISON OF SOLAR, HEAT-PUMP, AND SOLAR-HEAT PUMP SYSTEMS JOURNAL OF SOLAR ENERGY ENGINEERING-TRANSACTIONS OF THE ASME, 1982, 104 (03): : 158 - 164