420 空調屋外機周辺の熱気流環境の数値解析(環境数値シミュレーションIIおよびパッケージ空調機効率向上,環境保全型エネルギー技術)

概要

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The rise in suction temperature of outdoor units of air conditioners is caused by installing many outdoor units on the roof of buildings. This problem is due to short-circuit air flow of the exhaust air of outdoor units. Our aims are to investigate various factor of short-circuit air flow and improve this problem. In this paper, by using original CFD (Computational Fluid Dynamics) code 'SCIENCE' have been developed by us, the influence of the wall on the roof of the building upon suction temperature of outdoor units was investigated. As a result, the phenomenon that the units in the lower stream suck exhaust air of the units in the upper stream due to negative pressure arisen by separation of main flow from the wall, and the rise in suction temperature of units were confirmed.
一般社団法人日本機械学会の論文
2005-07-06