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권대일(Dae Il Kwon),정영기(Young Gi Jeong),조한샘(Han Saem Cho),박현남(Hyun Nam Park),김동열(Dong Yul Kim),박성수(Sung Soo Park),고한서(Han Seo Ko) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.11
A period of winter has shortened and a period of summer has lengthened in Korea because .the climate has become a subtropical climate lately, which is contrary to a temperate climate in past years. Furthermore, a discomfort index is getting higher in summer because of high humidity. Therefore, the use of an air conditioner has increased steadily and the electric usage in summer has highly risen annually. Since this situation is unavoidable to live in Korea, it is required to find efficient methods to develop the air conditioners. One of the methods which was attempted in this study was an improvement of the efficiency for a room air conditioner(RAC) by redesigning the outlet blade. The best design has been selected in this study by examining the change of mass flow rate and direction of the cold air for the improved efficiency after redesigning the outlet blade. A commercial software, FLUENT, has been used to analyze the phenomena. Finally, an existing model has been compared with the redesigned model to confirm the improved efficiency.