CAJ | 학술논문

在一台3HP分体落地式房间空调器壳体和风机等其他条件不变的情况下，将全铝微通道蒸发器替代铜铝翅片管蒸发器，对不同制冷剂充注量下微通道蒸发器房间空调器的性能以及微通道蒸发器制冷剂配液分布进行了红外成像试验研究．试验结果表明：微通道蒸发器房间空调器随着制冷剂充注量的增加，输入功率小幅上升0.27 kW，整机性能在充注量为2.3 kg时达到最优，制冷量和能效比呈现出先增大后减小的趋势，后者较前者由大变小的转变点有所滞后．红外成像结果同步反映出微通道蒸发器分液效果呈现出先变好后变差的趋势．与房间空调器原机铭牌参数相比，最佳充注量试验样机的制冷量增加2.50％，能效比高出2.84％，制冷剂充注量减少9.80％．
재일태3HP분체락지식방간공조기각체화풍궤등기타조건불변적정황하，장전려미통도증발기체대동려시편관증발기，대불동제랭제충주량하미통도증발기방간공조기적성능이급미통도증발기제랭제배액분포진행료홍외성상시험연구．시험결과표명：미통도증발기방간공조기수착제랭제충주량적증가，수입공솔소폭상승0.27 kW，정궤성능재충주량위2.3 kg시체도최우，제랭량화능효비정현출선증대후감소적추세，후자교전자유대변소적전변점유소체후．홍외성상결과동보반영출미통도증발기분액효과정현출선변호후변차적추세．여방간공조기원궤명패삼수상비，최가충주량시험양궤적제랭량증가2.50％，능효비고출2.84％，제랭제충주량감소9.80％．
A micro-channel evaporator using aluminum fins was used as substitution for traditional evaporator using copper tubes with aluminum fins in a split type of 3 HP floor-standing room air condi-tioner.Keeping the fans and other conditions consistent,experimental studies on this modified room air conditioner performance with various refrigerant charge and different refrigerant distribution in the micro-channels were conducted and visualized with infrared thermographs.The results show that in the air conditioner using micro-channel evaporator,with the increase of refrigerant charge,there is a mi-nor increase in input power of 0.27 kW,and the tested unit has the best performance with a refrigerant charge of 2.3 kg.Meanwhile,the cooling capacity and EER (energy efficiency ratio)increase first then tend to decline,with the turning point of EER lagging behind that of cooling capacity.Corre-sponding infrared thermographs synchronously show the tendency of the effect of refrigerant distribu-tion in micro-channels,being from good to poor with the increase of refrigerant charge.In comparison with parameters on the nameplate of the original unit,the results reveal an increase of 2.50% and 2.84%in cooling capacity and EER,respectively,and a decrease of 9.80% in refrigerant charge in the modified unit.