1987年的《国家电器节能法》（NAECA）制定了房间空调的最低能效标准，该标准于1990年1月1日生效。1990年的最低能效比（EER）范围为8.0至9.0（Btu/h）/W（2.34至2.64 W/W）。根据NECA的要求，能源部（DOE）也必须考虑修改1990生效的房间空调器标准。因此，美国能源部于1994年3月发布了《拟议规则制定通知》（NOPR），为包括房间空调在内的几种产品提出了新的能效标准。美国能源部收到了大量的意见，以回应提出的更新标准。结合这些意见进行了重新分析，从而对更高效的房间空调设计的成本和效率增加进行了修订估计。 本文描述了为支持能源部修订1994年3月提出的房间空调能效标准而对设计方案进行的成本效益分析。分析表明，对于最受欢迎的房间空调类别（无反向循环、有百叶窗侧、容量小于6000至20000 Btu/h[1758至5860 W]的类别），通过结合常用技术，例如高效旋转压缩机、槽式制冷剂管、，狭缝式散热片、过冷器和永久性分体式电容风扇电机。使用无刷永磁风扇电机、加大的热交换器线圈和变速压缩机可以实现效率的更大提高。 单位:双引证:研讨会，ASHRAE交易，1998年，第104卷，第2部分，多伦多

The National Appliance Energy Conservation Act (NAECA) of 1987 established minimum energy-efficiency standards for room air conditioners, which became effective on January 1, 1990. The 1990 minimum energy-efficiency ratios (EER) range from 8.0 to 9.0 (Btu/h)/W (2.34 to 2.64 W/W). As required by NAECA, the Department of Energy (DOE) must also consider amending the room air conditioner standards that went into effect in 1990. As a result, the DOE issued a Notice of Proposed Rulemaking (NOPR) in March 1994 proposing new energy-efficiency standards for several products including room air conditioners. DOE received an extensive number of comments in response to the updated standards that were proposed. A reanalysis was conducted incorporating these comments, resulting in revised estimates of the cost and efficiency increases for more efficient room air conditioner designs. This paper describes the cost-efficiency analysis of design options carried out in support of DOE's effort to revise the energy-efficiency standards that were proposed for room air conditioners in March 1994. The analysis shows that for the most popular classes of room air conditioners (classes without reverse cycle, with louvered sides, and with capacities ranging from less than 6000 to 20,000 Btu/h [1758 to 5860 W]), EERs of approximately 10.0 (Btu/h)/W (2.93 W/W) can be achieved by incorporating commonly used technologies, such as high-efficiency rotary compressors, grooved refrigerant tubing, slit-type fins, subcoolers, and permanent split capacitor fan motors. Even greater increases in efficiency can be realized with brushless permanent magnet fan motors, enlarged heat exchanger coils, and variable-speed compressors.Units: Dual