配管长度及分歧管间距对多联式空调性能的影响

The influence of pipe length and pipe-connector spacing on performance in multi-connected air-condition system

通过实验的方法,研究了变负荷工况下配管长度与分歧管间距对多联式空调系统的能效比(EER)及冷量不平衡率的影响.结果表明,配管长度过长造成EER下降和冷量衰减,影响室内机的放冷量,配管长度不应超过162 m;随着分歧管间距增加,系统的EER及制冷量不平衡率急剧下降,同时分歧管间距对系统性能的影响远大于配管长度.

Through a testing, the influence of different cooling load on EER and unbalance rate of refrigera- ting capacity in multi-conneted air-condition system was studied. Influence of pipe length and pipe-connec- tor spacing on performance of the unit was researched based on different cooling load. The results showed that the EER and refrigerating capacity was decreasing as the pipe length increased to 162 m and pipe-con- nector spacing increased;the influence of pipe-connector spacing on performance of multi-connected air- condition system was much larger than pipe length.