南京师范大学学报(工程技术版)
南京師範大學學報(工程技術版)
남경사범대학학보(공정기술판)
JOURNAL OF NANJING NORMAL UNIVERSITY(ENGINEERING AND TECHNOLOGY)
2015年
1期
21-24
,共4页
付玉%张忠斌%黄虎%张若楠
付玉%張忠斌%黃虎%張若楠
부옥%장충빈%황호%장약남
制冷剂流动方向%微通道蒸发器%房间空调器%环境温度%红外成像
製冷劑流動方嚮%微通道蒸髮器%房間空調器%環境溫度%紅外成像
제랭제류동방향%미통도증발기%방간공조기%배경온도%홍외성상
refrigerant flow direction%micro-channel evaporator%room air conditioner%ambient temperature%infrared ther-mographs
试验研究UF(Upward Flow,制冷剂在微通道蒸发器中自下而上流动)和DF(Downward Flow,制冷剂在微通道蒸发器中自上而下流动)2种制冷剂流动方式下微通道房间空调器的制冷性能,并对其名义制冷工况下制冷剂配液分布进行红外成像.试验结果表明,随着室内空气干球温度的上升,2种方式的制冷量和能效比均不断上升;名义制冷工况下,UF方式优于DF方式,前者的制冷量和能效比EER比后者分别高出21.52%和14.94%;红外成像分析表明,UF方式分液效果优于DF方式.但是,UF方式蒸发器尾部制冷剂分配较少,换热效果下降.
試驗研究UF(Upward Flow,製冷劑在微通道蒸髮器中自下而上流動)和DF(Downward Flow,製冷劑在微通道蒸髮器中自上而下流動)2種製冷劑流動方式下微通道房間空調器的製冷性能,併對其名義製冷工況下製冷劑配液分佈進行紅外成像.試驗結果錶明,隨著室內空氣榦毬溫度的上升,2種方式的製冷量和能效比均不斷上升;名義製冷工況下,UF方式優于DF方式,前者的製冷量和能效比EER比後者分彆高齣21.52%和14.94%;紅外成像分析錶明,UF方式分液效果優于DF方式.但是,UF方式蒸髮器尾部製冷劑分配較少,換熱效果下降.
시험연구UF(Upward Flow,제랭제재미통도증발기중자하이상류동)화DF(Downward Flow,제랭제재미통도증발기중자상이하류동)2충제랭제류동방식하미통도방간공조기적제랭성능,병대기명의제랭공황하제랭제배액분포진행홍외성상.시험결과표명,수착실내공기간구온도적상승,2충방식적제랭량화능효비균불단상승;명의제랭공황하,UF방식우우DF방식,전자적제랭량화능효비EER비후자분별고출21.52%화14.94%;홍외성상분석표명,UF방식분액효과우우DF방식.단시,UF방식증발기미부제랭제분배교소,환열효과하강.
Experimental comparison on the performance is conducted between Upward Flow( the refrigerant flows from down to up) and Downward Flow( the refrigerant flows from up to down) in a room air conditioner using micro-channel evaporator. Refrigerant distribution of nominal refrigeration condition in the micro-channels is made in infrared thermographs. Experi-mental results show that the cooling capacity and EER improve with the increase of ambient temperatures. Experimental re-sults reveal a mean increase of 21.52% in cooling capacity and an increase of 14.94% in EER in the unit using UF model than that using DF model under nominal refrigeration condition. The infrared thermographs elaborate that UF model is supe-rior to DF. However,refrigerant distribution in the latter tubes becomes worse,which deserves more effort.