冷媒R-11,R-113混合物の管内沸騰

概要

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High Quality flow boiling in tube of non-azeotropic binary mixtures was experimentally investigated using mixtures of refrigerants R-11 and R-113 as working fluids. The experimental set-up consisted of a test section made of a 304 stainless steel tube with 7 mm I. D., which was placed vertically in a low pressure heat transfer test rig 'its maximum pressure was 0.5 MPa). The test section was uniformly heated by direct resistance heating. The data of heat transfer coefficient were correlated in the form of two-phase to single-phase liquid heat transfer coefficient ratio versus Lockhart-Martinelli parameter. The CHF data were correlated in terms of the critical quality. According to the correlation results, the linear mixing rule for composition does not hold for the heat transfer coefficient, while it does holds for the critical quality.
一般社団法人日本機械学会の論文
1986-07-25