| 摘要: |
| 现今空调器中广泛使用的R22因环保问题而遭淘汰，HFCs（氢氟碳化物）会加剧温室效应，亟需寻求更为合适的制冷剂，HCs（碳氢）初见端倪。采用空气焓值法，在R22分体式房间空调器中充注R290和R1270，进行性能实验研究。结果表明，标准工况下，用R290直接灌注式替代R22时，系统制冷量降低5.0%，EER升高10.3%，而换用排量大20%的压缩机能提高制冷量8.9%，而EER降低8.5%，但性能较原R22系统要好；R1270系统性能要优于R290系统。结果还表明，随着室外温度降低，碳氢系统制冷量和EER的增加速率和增幅均大于原R22系统，且室外温度低时碳氢系统性能更优，有利于节能。研究结果表明，HCs适合在空调器中替代R22，具有广阔的应用前景。 |
| 关键词: 房间空调器；空气焓值法；碳氢；性能 R290；R1270 |
| DOI： |
| 投稿时间：2012-05-06
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| 基金项目:国家高技术研究发展计划（863计划，2007AA05Z219)资助项目 |
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| Experimental Study of Split Room Air Conditioner Charged with R290 and R1270 as Substitutes to R22 |
| Yang Linde,Wu Jianhua,Hou Jie |
| (Department of Refrigeration and Cryogenic Engineering, Xi’an Jiaotong University) |
| Abstract: |
| It is urgent to seek more suitable refrigerants as the traditional R22 used widely in air conditioners nowadays is under phase out for its environmental problems and hydrofluorocarbons (HFCs) would aggravate global warming effects, while hydrocarbons (HCs) have drawn public attention. In this paper, R290 and R1270 were adopted as refrigerants in a R22 original split room air conditioner to carry out performance experiments using air-enthalpy test method. The results indicate that under normal condition, adopting R290 as a drop-in substitute to R22 would offer 5.0% lower cooling capacity and 10.3% higher energy efficiency ratio (EER), and the use of the 20% larger displacement compressor could help increase cooling capacity by 8.9%, but reduce EER by 8.3%, however, the performance is better than that of the original R22 system. And the performance of the R1270 system is better than that of the R290 system under normal condition. The results also show that, with respect to the original R22 system, HC systems have higher increase rate and greater increment in both cooling capacity and EER with the decrease of outdoor temperature and they have better performance when outdoor temperature is relatively low. The results demonstrate that HCs are promising substitutes to R22 and deserve wide application prospects in air conditioners. |
| Key words: room air conditioner air-enthalpy test method hydrocarbon performance R290 R1270 |
