Experimental Investigation of Continual- and Intermittent-Spray Cooling |
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Authors: | Z Zhang P-X Jiang Y-T Hu J Li |
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Institution: | Key Laboratory for Thermal Science and Power Engineering of Ministry of, Educations, Department of Thermal Engineering , Tsinghua University , Beijing , China |
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Abstract: | This work involved continual- and intermittent-spray cooling heat transfer experiments on a flat surface to study the effects of the spray cycle, duty ratio, and spray time. The spray droplet parameters were similar, while the heat transfer coefficients for continual-spray cooling were appreciably larger than those of intermittent-spray cooling for the same pressure; however, the heat dissipated per kilogram of water for the intermittent-spray cooling was larger, especially in the non-boiling region. The results show that an optimal spray cycle and optimal duty ratio make more efficient use of the coolant in intermittent-spray cooling. |
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Keywords: | continual-spray cooling intermittent-spray cooling spray parameters heat dissipated per kilogram of water effective heat transfer coefficient |
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