Cooling of High Temperature Surface by Droplets

概要

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The water spray cooling of hot steel is applied to many processes at the iron works, such as cooling of cast iron at a continuous casting machine and cooling of steel plate and rollers in mills.The mechanism of the heat transfer from the steel plate to Spray droplets has not made clear completely because of complicated boiling phenomena attended with ydrodynamic movement of droplets. But, actually, this method is used at many process on the ground of simplicity of cooling apparatus and being able to get large cooling speed.In this lecture, some illustrations of spray cooling applications are introduced, and the basic mechanisms of the heat transfer are explained qualitatively refering to the research works and the cooling curve of fog cooling. And the tests for spray and fog cooling, these were accomplished at our laboratory, are briefly mentioned.
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