变频多联式室内系统制冷性能的实验研究  

The Experimental Research on Cooling Capacity of VRF Indoor Units

作　　者：张运博[1] 

机构地区：[1]南通航运职业技术学院轮机工程系,江苏南通226010

出　　处：《武汉船舶职业技术学院学报》2015年第4期34-37,共4页Journal of Wuhan Institute of Shipbuilding Technology

摘　　要：通过一套R410a变频多联式空调系统,通过对室内机出口压力、出口过热度、入口过冷度、出风风量和追加冷媒量等因素的实验研究,得出了各因素对室内机制冷量的影响。实验结果表明,出口压力每升高10kPa,能力率下降1.99%;出口过热度控制在6℃以下对能力率的影响较小;入口过冷度控制在5~8℃的范围内,室内机制冷量较稳定;当显热量变化较明显时,每增加风量100m3/h,能力率升高2.88%冷媒灌注量在一定范围内的偏差,对室内机制冷量的影响可以忽略。A variable frequency VRF system using R410a was built .A few factors which would affect the cooling capacity of the indoor units such as outlet pressure ,outlet superhea‐ting ,inlet super cooling ,air volume and additional refrigerant were experimentally studied and analyzed .The results showed that ,cooling capacity would decrease 1 .99% when outlet pressure increases 10kPa and w ould increase 2 .88% w hen air volume increases 100 m3/h . Besides ,the impact of cooling capacity could be ignored when additional refrigerant fills in a certain range ,outlet superheating control below 6℃ and inlet super cooling control between 5 and 8℃ .

关 键 词：制冷量 出口压力 出口过热度 入口过冷度 出风风量 追加冷媒量 

分 类 号：TB61[一般工业技术—制冷工程]