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An Analysis of Efficiency Improvements in Room Air Conditioner
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DescriptionIn 1976, the U.S. Congress passed the National Energy Conservation Policy Act (NECPA) P.L. 95-619, which requires the imposition of minimum efficiency standards on eight major household appliances. The law required that the proposed standards be both technologically feasible and economically justifiable. One of the appliances for standards consideration was the room air conditioner (RAC). In 1980 the Department of Energy first proposed minimum efficiency standards on new room air conditioners on seven other appliances. In 1983, "no standard" standards were issued by DOE for all eight appliances because the energy savings of standards were not significant enough to justify minimum efficiency standards. The "no standard" standards were challenged in court ion 1984. In 1985, the "no standard" standards were ruled unlawful . In 1983 However, due to a court challenge of the 1982 standards, they were not allowed. In 1987, Congress passed the National Appliance Energy Conservation Act (NAECA), P.L. 100-12 which specified minimum efficiency levels for major appliances, including RACs (Table 1.1). The minimum efficiency standards for RACs must be met by January 1, 1990. Periodically, the Department of Energy can publish amendments to the standards after analyses have been performed to determine their technical and economic feasibility. This report summarizes the results of an engineering analysis used to evaluate the technical feasibility of improving the efficiency of RACs. The objectives of this study included: (1) evaluation and selection of a suitable RAC design model, (2) selection of design options that can be used to improve RAC performance, and (3) development of high efficiency RAC designs.
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O'Neal, D. L.; Penson, S. B. (1988). An Analysis of Efficiency Improvements in Room Air Conditioner. Energy Systems Laboratory (http://esl.tamu.edu), Texas A&M University; Department of Mechanical Engineering, Texas A&M University. Available electronically from