CAJ | 학술논문

依据GB/T7725-2004规定的试验工况，分别对应用R32和R290的空调系统进行性能测试。在理论分析的基础上，依据试验数据，对比分析两种替代制冷剂的优缺点及其系统的改进方法。结果表明：R32单位容积制冷量高出R290约87％左右，相同制冷量下R290系统应使用更大排量的压缩机。R32具有较高的排气温度，并且R32系统相比R290系统，压比高出约7％，系统整体的能效比低约3．7％。R290系统换热器的压降要小于R32，有助于提高系统性能。但其可燃性远远大于R32，在安全设计方面有着更高的花费，系统初期改造投入比较高。
의거GB/T7725-2004규정적시험공황，분별대응용R32화R290적공조계통진행성능측시。재이론분석적기출상，의거시험수거，대비분석량충체대제랭제적우결점급기계통적개진방법。결과표명：R32단위용적제랭량고출R290약87％좌우，상동제랭량하R290계통응사용경대배량적압축궤。R32구유교고적배기온도，병차R32계통상비R290계통，압비고출약7％，계통정체적능효비저약3．7％。R290계통환열기적압강요소우R32，유조우제고계통성능。단기가연성원원대우R32，재안전설계방면유착경고적화비，계통초기개조투입비교고。
AccordingtothepredeterminedconditionsfromGB/T7725-2004,performancesofR32andR290whenusedinair conditioning systems were tested.Based on theoretical analysis and experimental data,the performances and system improved methods of these two alternative refrigerants were summarized.The results showed that:cooling capacity per unit volume of R32 was higher about 87%than R290,so,for getting the same cooling capacity,R290system can use a compressor having bigger dis-placement.But the R32 system has a higherdischarge temperature,and pressure ratio is also higher about 7% than R290.Com-pared to R290 system,energy efficiency of R32 systemfell by about 3.7%.Heat exchanger pressure drop ofR290 system is less than R32,which helps to improve system efficiency.But safety performance of R290 is less than R32,which lead to a higher cost in the system safety design anda relatively high initial investment in the transformation.