Flow Boiling Pressure Drop Characteristics

On the other hand Bao et al. (2000) reported that the measured heat transfer coefficients for the air-water system are always higher than would be expected for the corresponding single-phase liquid flow, so that the addition of air can be considered to have an enhancing effect. This paper reports an experimental study of non-boiling air-water flows in a narrow horizontal tube (diameter 1.95 mm). Results are presented for pressure drop characteristics and for local heat transfer coefficients over a wide range of gas superficial velocity (0.1-50m/s), liquid superficial velocity (0.08-0.5 m/s) and wall heat flux (3-58 kW/m ). 

S. M. MacBain and A. E. Bergles, Heat Transfer and Pressure Drop Characteristics of Forced Convection Evaporation in Deep Spirally Fluted Tubing, in Convective Flow Boiling, J. C. Chen ed., pp. 143-148, Taylor Francis, Washington, DC, 1996. 

Landau LD, Lifshitz EM (1959) Fluid mechanics, 2nd edn. Pergamon, London Landerman CS (1994) Micro-channel flow boiling mechanisms leading to Burnout. J Heat Transfer Electron Syst ASME HTD-292 124-136 Levich VG (1962) Physicochemical hydrodynamics. Prentice HaU, London Morijama K, Inoue A (1992) The thermohydraulic characteristics of two-phase flow in extremely narrow channels (the frictional pressure drop and heat transfer of boiling two-phase flow, analytical model). Heat Transfer Jpn Res 21 838-856... 

Kim S and Mudawar I 2013b Universal approach to predicting saturated flow boiling heat transfer in mini/micro-channels-Part I. Dryout incipience quahty. Int. J. Heat Mass Transfer, 64, pp. 1226-1238. Kim S, Kim J, and Mudawar I 2012 Flow condensation in parallel micro-channels-Part I experimental results and assessment of pressure drop correlations. Int. J. Heat Mass Transfer, 55, pp. 971-983. Lee J and Mudawar I 2005 Two phase flow in high heat flux micro channel heat sink for refrigeration cooling apphcations Part E-heat transfer characteristics. Int. J. Heat Mass Transfer, 48, pp. 941-955. Lee J and Mudawar 12009 Critical heat flux for sub-cooled flow bofling in micro-channel heat sinks. Int. J. Heat Mass Transfer, 52, pp. 3341-3352. 

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