This work presents the single- and two-phase results of a parametric study investigating the performance of oblique jet arrays impinging at 45 deg on a 3.63 cm2 square copper heater surface using R-245fa. It was found that the parameters that most impact heat transfer changed as the system progressed from single- to two-phase flow behavior. The single-phase performance was governed by the jet geometry and the volumetric flow rate, while in the two-phase region, heat transfer performance was primarily affected by the fluid conditions and the heat flux applied. A single-phase correlation was developed to capture the low heat flux response, and the two-phase results were well-correlated by a pool boiling correlation. A new general correlation for jet impingement heat transfer with phase change is presented combining these correlations. Critical heat flux (CHF) data were compared with literature correlations and a new correlation was developed for arrays of boiling jets.
Extensive Parametric Study of Heat Transfer to Arrays of Oblique Impinging Jets With Phase Change
Contributed by the Heat Transfer Division of ASME for publication in the Journal of Heat Transfer. Manuscript received July 17, 2012; final manuscript received January 15, 2013; published online September 23, 2013. Assoc. Editor: Sujoy Kumar Saha.
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Buchanan, R. A., and Shedd, T. A. (September 23, 2013). "Extensive Parametric Study of Heat Transfer to Arrays of Oblique Impinging Jets With Phase Change." ASME. J. Heat Transfer. November 2013; 135(11): 111017. https://doi.org/10.1115/1.4024625
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