Vol 8, No 5 (2017) > Mechanical Engineering >

Effect of Liquid Reynolds Number on Pressure Drop of Evaporative R-290 in 500µm Circular Tube

Sentot Novianto, Agus Sunjarianto Pamitran, Raldi Koestoer, Jong-Taek Ohh, Kiyoshi Saito

 

Abstract: Due to certain advantages, natural refrigerants have recently become more popular. Environmental issues motivate this study, focused on the characteristics of propane (R-290) as a replacement for conventional refrigerants. The aim of the present research is to characterize the pressure drop of evaporative R-290 in a microchannel of 500µm diameter and 0.5 m length. The variables of the experimental conditions are mass flux between 155 and 1071 kg/m2s and vapor quality between 0 and unity. The results show a laminar flow for liquid R-290 and a turbulence flow for vapor. Some existing correlations of two-phase flow viscosity were used to predict the pressure drop. For homogeneous model, Dukler et al.’s (1964) prediction viscosity correlation best predicted the present experimental pressure drop.
Keywords: Microchannel; Propane; Pressure drop; Two-phase flow; Viscosity

Full PDF Download

References


Choi, K.I., Pamitran, A., Oh, J.T., Saito, K., 2009. Pressure Drop and Heat Transfer during Two-Phase Flow Vaporization of Propane in Horizontal Smooth Minichannels. International Journal of Refrigeration, Volume 32, pp. 837845

Cicchitti, A., Lombardi, C., Silvestri, M., Soldaini, G., Zavattarelli, R., 1959. Two-Phase Cooling Experiments: Pressure Drop, Heat Transfer and Burnout Measurements. Centro Informazioni Studi Esperienze, Milan

Collier, J.G., 2001. John R. Thome Convective Boiling and Condensation. International Book Company, pp. 41–44

Dário, E.R., Passos, J.C., Simón, M.L.S., Tadrist, L., 2016. Pressure Drop during Flow Boiling Inside Parallel Microchannels. International Journal of Refrigeration, Volume 72, pp. 111123

Del Col, D., Bisetto, A., Bortolato, M., Torresin, D., Rossetto, L., 2013. Experiments and Updated Model for Two-phase Frictional Pressure Drop inside Minichannels. International Journal of Heat and Mass Transfer, Volume 67, pp. 326337

Del Col, D., Bortolato, M., Bortolin, S., 2014. Comprehensive Experimental Investigation of Two-phase Heat Transfer and Pressure Drop with Propane in a Minichannel. International Journal of Refrigeration, Volume 47, pp. 6684

Dukler, A., Wicks, M., Cleveland, R., 1964.Frictional Pressure Drop in Two‐phase Flow: A Comparison of Existing Correlations for Pressure Loss and Holdup. AIChE Journal, Volume 10, pp. 3843

Friedel, L., 1979.Improved Friction Pressure Drop Correlations for Horizontal and Vertical Two-phase Pipe Flow. European Two-phase Flow Group Meeting, Paper E, 1979

Ghazali, N., Yousif, Q.A., Pamitran, A.S., Novianto, S., Ahmad, R., 2016.Optimization of the Friction Factor and Frictional Pressure Drop OF R22 AND R290. International Journal of Technology, Volume 7(2), pp. 227234

Kew, P.A., Cornwell, K., 1997. Correlations for the Prediction of Boiling Heat Transfer in Small-diameter Channels. Applied Thermal Engineering, Volume 17, pp. 705715

Maqbool, M.H., Palm, B., Khodabandeh, R., 2013. Investigation of Two-phase Heat Transfer and Pressure Drop of Propane in a Vertical Circular Minichannel. Experimental Thermal and Fluid Science, Volume 46, pp. 120130

McAdams, W., Woods, W., Heroman, L., 1942. Vaporization inside Horizontal Tubes-II-Benzene-Oil Mixtures. Trans. ASME, Volume 64, pp. 193200

Zhang, M., Webb, R.L., 2001. Correlation of Two-phase Friction for Refrigerants in Small-diameter Tubes. Experimental Thermal and Fluid Science, Volume 25, pp. 131139