Abstract
Many researchers have studied about spray coolings and obtained the results of measurement. In this research, the purpose is to improve the performance of cooling in low temperature regime, and to obtain the fundamental database for the highly precision control of heat transfer surface temperature. The experiments on steady cooling on downward horizontal ribbon were performed. The heat transfer process and cooling limitation heat flux of spray were investigated. The experimental results for two kind of spray nozzles were obtained for flow rates and subcoolings. The correlation of cooling limitation heat flux was presented.
