沙特阿拉伯近年来经济快速增长，导致电力消耗增加。由于天气炎热以及空调性能标准的延迟实施，空调（A/Cs）的耗电量占50%。一个挑战是，现有建筑中的大多数空调都很旧，在2013年空调标准实施之前就已经安装好了。用新的高效空调更新旧空调将减少电力消耗，使建筑业主和公用事业公司受益。此外，与使用R22（一种逐步淘汰的制冷剂）的旧空调相比，新空调机组配备了更环保的制冷剂R410A。在本研究中，在沙特标准、计量和质量组织（SASO）A/C测试实验室对6台使用了3至32年的分体式机组进行了测试，并将其性能与新机组进行了比较。 所有测试机组的额定冷却能力为18000 BTU/hr。根据ASHRAE和SASO冷却试验条件进行试验。试验结果表明，所用分体式机组的能效比和制冷量分别为68%和93%。如果新单元使用R22而不是R410A，这种性能下降将更加严重。针对代表沙特阿拉伯不同行业的不同年运行小时数和不同电价，对投资回收期进行了调查。绘制了一张地图，显示了在不同运行时间和电价下，不同预期投资回收期内经济可行的空调系统更换区域。开发的地图可以帮助政府或建筑业主决定何时更新现有的分割- A/C型。结果表明，如果政府更换200万台使用过的分体式机组，每年将节省417万吨CO2，公用事业的峰值负荷将减少1.48 GW。最后，研究了用新压缩机替换旧机组压缩机（A/Cs的核心）的效果。引文:2017年冬季会议，内华达州拉斯维加斯，会议论文

Saudi Arabia has been in rapid economic growth in recent years resulting in an increase in electricity consumption. Air-conditioners (A/Cs) are responsible for 50% of the electricity consumption due to hot weather conditions as well as the delay in implementing A/Cs performance standards. One challenge is that most A/Cs in existing buildings are old and have been installed before standards on A/Cs were enforced in 2013. Renewing old A/Cs with new and efficient ones would reduce electricity consumption, benefiting building owners as well as utility companies. Furthermore, new A/Cs units are equipped with more environmentally friendly refrigerant, R410A, than old A/Cs which use R22, a phased out refrigerant. In this research, six used split-type units that have ages from 3 to 32 years were tested in Saudi Standard, Metrology and Quality Organization (SASO) A/C testing lab and their performances were compared to new units. All tested units have a rated cooling capacity of 18,000 BTU/hr. Tests were performed according to ASHRAE as well as SASO cooling test conditions. Test results show that EER and cooling capacity of the used split-type units compared to the new one are 68% and 93%, respectively. Such performance degradation would be more profound if the new unit uses R22 instead of R410A. Payback periods were investigated for different annual operation hours and different electricity rates, representing different sectors in Saudi Arabia. A map was developed showing economically feasible A/Cs replacement regions for different desired payback periods at different operation hours and electricity rates. The developed map can help the government or building owners on deciding when to renew existing split-type A/Cs. The results show that if the government replaces 2 million used split-type units, 4.17 million tons of CO2 per year will be saved and the peak load on the utility will be reduced by 1.48 GW. Last, the effect of replacing the used unit compressor, which is the heart of the A/Cs, with a new compressor was investigated.