Analysis of the influence of branch pipe length on indoor unit capacity in twin air conditioning systems
WANG Yonglin
HU Yingxu
JIANG Xianguo
HU Jingwei
ZHANG Zheng
LIU Ling
Abstract：The twin air conditioning system utilizes branch pipe components for mechanical flow separation,and the length of branch pipes connecting each indoor unit has a significant impact on the capacity of the indoor unit in that circuit.In order to ensure uniform distribution of refrigerant in each indoor unit and equivalent capacity output,theoretical analysis was conducted on the impact of branch pipe length on capacity,and experimental verification was conducted.Finally,it is suggested that the length difference of the split manifold during actual installation should be controlled within 8 m to ensure the stable operation of the twin air conditioning system.
Keywords：Twin air conditioning systemIndoor unit capacityDifference in length of branch pipes
Publication Date：2023-12-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 57-60 )