CAJ | 학술논문

分析了R290替代R22存在的优势，采用某企业生产的R22家用空调外机与套管换热器作为原型机，分别灌注R22和R290，灌注R290的同时更换大排量压缩机，调整节流装置最佳，优化灌注量，试验参照GB/T 18430．2-2008名义工况进行。结果表明：R290系统灌注量仅为R22的44．7％，制冷及制热名义工况下R290能力及能效比均不低于R22，但R290系统排气温度及压缩比明显低于R22。 R290可以替代R22用于风冷冷热水机组，相应的压缩机排量应增加19％左右。
분석료R290체대R22존재적우세，채용모기업생산적R22가용공조외궤여투관환열기작위원형궤，분별관주R22화R290，관주R290적동시경환대배량압축궤，조정절류장치최가，우화관주량，시험삼조GB/T 18430．2-2008명의공황진행。결과표명：R290계통관주량부위R22적44．7％，제랭급제열명의공황하R290능력급능효비균불저우R22，단R290계통배기온도급압축비명현저우R22。 R290가이체대R22용우풍랭랭열수궤조，상응적압축궤배량응증가19％좌우。
The advantages of R290 as a substitute to R22 were analyzed,and the experimental prototype , which assembled with an outdoor unit of a household air conditioner produced by a company using R 22 refrigerant and a coaxial heat exchanger , was charged with R22 and R290 refrigerant at the same time increasing compressor displacement respectively .By optimizing the throt-tling device and refrigerant charge , the experiments were carried out under nominal working conditions in the national standard GB/T 18430.2-2008.The results showed a decrease by 55.3%in charge of R290, and that the capacity and EER of R290 were no less than R22 under both cooling and heating nominal working conditions , while the discharge temperature and compression ra-tio were less than R22 dramatically.R290 could be used to replace R22 in air-to-water heat pump and the compressor displace-ment should be increased about 19%synchronously .