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Two-Phase Flow and Pressure Drop in Flow Passages of Compact Heat Exchangers
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Abstract
Two-phase flow experiments were performed with air/water mixtures in a small rectangular channel measuring 9.52 x 1.59 mm (aspect ratio equal to 6), for application to compact heat exchangers. Pressure drop and flow pattern definition data were obtained over a large range of mass qualities (0.0002 to 1) and, in the case of flow pattern data, a large range of mass fluxes (50 to 2,000 kg/m2s). A flow pattern map, based on visual observations and photographs of the flow patterns, is presented and compared with a map developed for a rectangular channel of the same aspect ratio but with dimensions twice those of the test channel, and with a map developed for a circular tube with the same hydraulic diameter of 3 mm. Pressure drop data are presented as a function of both mass quality and Martinelli parameter and are compared with state-of-the-art correlations and a modified Chisholm correlation.
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Authors
Citation
Wambsganss, M., Jendrzejczyk, J., and France, D., "Two-Phase Flow and Pressure Drop in Flow Passages of Compact Heat Exchangers," SAE Technical Paper 920550, 1992, https://doi.org/10.4271/920550.Also In
References
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