摘要：This article presents the results of experimental research of heat transfer coefficient in air cooled vertical pipe minichannels during R404A, R407C and R410A high-pressure refrigerants condensation. The study determined local and average heat transfer coefficient values in full range of vapour quality, x = 0 ÷ 1. On the basis of experimental investigations, the dependence of heat transfer on the vapour quality x, mass flux density G and minichannel's internal diameter dw was obtained.
其他摘要：This article presents the results of experimental research of heat transfer coefficient in air cooled vertical pipe minichannels during R404A, R407C and R410A high-pressure refrigerants condensation. The study determined local and average heat transfer coefficient values in full range of vapour quality, x = 0 ÷ 1. On the basis of experimental investigations, the dependence of heat transfer on the vapour quality x , mass flux density G and minichannel's internal diameter dw was obtained.
