Abstract
This paper presents an experimental investigation on condensation of R410A upward flow in vertical tubes with the same inner diameter of 8.02mm and different lengths of 300 mm, 400 mm, 500 mm and 600mm. Condensation experiments were performed at mass fluxes of 103–490 kg m−2s−1. The saturation temperatures of experimental condition were 31°C, 38°C and 48°C, alternatively. The average vapor quality in the test section is between 0.91 and 0.98. The effects of tube length, mass flux and condensation temperature on condensation were discussed. Four correlations used for the upward flow condensation were compared with the experimental data obtained from various experimental conditions. A modified correlation was proposed within a ±15% deviation range.
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Colombo L P M, Lucchini A, Muzzio A: Flow patterns, heat transfer and pressure drop for evaporation and condensation of R134A in microfin tubes, International Journal of Refrigeration, vol.35, pp.2150–2165, (2012).
Jung D, Cho Y, Park K: Flow condensation heat transfer coefficients of R22, R134a, R407C, and R410A inside plain and microfin tubes, International Journal of Refrigeration, vol.27, pp.25–32, (2004).
Liebenberg L, Meyer J P: A review of flow pattern-based predictive correlations during refrigerant condensation in horizontally smooth and enhanced tubes, Heat Transfer Engineering, vol.29, pp. 3–19, (2008).
Dalkilic A S, Laohalertdecha S, Wongwises S: Experimental investigation of heat transfer coefficient of R134a during condensation in vertical downward flow at high mass flux in a smooth tube, International Communications in Heat and Mass Transfer, vol.36, pp. 1036–1043, (2009).
Dalkilic A S, Teke I, Wongwises S: Experimental analysis for the determination of the convective heat transfer coefficient by measuring pressure drop directly during annular condensation flow of R134a in a vertical smooth tube, International Journal of Heat and Mass Transfer, vol.54, pp.1008–1014, (2011).
Dalkilic A S, Laohalertdecha S, Wongwises S: Effect of void fraction models on the film thickness of R134a during downward condensation in a vertical smooth tube, International Communications in Heat and Mass Transfer, vol.36, pp.172–179, (2009).
Xu W, Jia L, Visualization on flow patterns during condensation of R410A in a vertical rectangular channel, Journal of Thermal Science, vol.23, pp.269–274, (2014).
Liao Y, Guentay S, Suckow D, et al: Reflux condensation of flowing vapor and non-condensable gases counter-current to laminar liquid film in a vertical tube, Nuclear Engineering and Design, vol.239, pp.2409–2416, (2009).
Seban R A, Hodgson J A: Laminar film condensation in a tube with upward vapor flow, International Journal of Heat and Mass Transfer, vol.25, pp.1291–1300, (1982).
Fiedler S, Auracher H: Experimental and theoretical investigation of reflux condensation in an inclined small diameter tube, International Journal of Heat and Mass Transfer, vol.47, pp.4031–4043, (2004).
Thumm S, Philipp C, Gross U: Film condensation of water in a vertical tube with countercurrent vapor flow, International Journal of Heat and Mass Transfer, vol.44, pp.4245–4256, (2001).
Gross U, Philipp C: Conjugated shear stress and Prandtl number effects on reflux condensation heat transfer inside a vertical tube, International Journal of Heat and Mass Transfer, vol.49, pp.144–153, (2006).
Gross U, Storch T, Philipp C, et al: Wave frequency of falling liquid films and the effect on reflux condensation in vertical tubes, International Journal of Multiphase Flow, vol.35, pp.398–409, (2009).
Lips S, Meyer J P. Experimental study of convective condensation in an inclined smooth tube: Part I: Inclination effect on flow pattern and heat transfer coefficient, International Journal of Heat and Mass Transfer, vol.55, pp.395–404, (2012).
Akhavan-Behabadi M A, Kumar R, Mohseni S G: Condensation heat transfer of R-134a inside a microfin tube with different tube inclinations, International Journal of Heat and Mass Transfer, vol.50, pp.4864–4871, (2007).
Soliman H M: On the annular-to-wavy flow pattern transition during condensation inside horizontal tubes, The Canadian Journal of Chemical Engineering, vol.60, pp. 475–481, (1982).
Dobson M K: Heat transfer and flow regimes during condensation in horizontal tubes, Air Conditioning and Refrigeration Center. College of Engineering, University of Illinois at Urbana-Champaign, USA (1994).
Dobson M K, Chato J C, Hinde D K, et al: Experimental evaluation of internal condensation of refrigerants R-134a and R-12, Air Conditioning and Refrigeration Center. College of Engineering, University of Illinois at Urbana-Champaign., USA (1993).
Traviss DP, Rohsenow WM, Baron AB: Forced convection condensation in tubes: a heat transfer equation for condenser design, ASHRAE Trans, vol.79, pp.157–165, (1973).
Shah M M: A general correlation for heat transfer during film condensation inside pipes, International Journal of Heat and Mass Transfer, vol.22, pp.547–556, (1979).
Dobson M K, Chato J C: Condensation in smooth horizontal tubes, Journal of Heat Transfer, vol.120, pp.193–213, (1998).
Bivens D B, Yokozeki A: Heat transfer coefficients and transport properties for alternative refrigerants, (1994).
Tang L, Ohadi M, Johnson A T: Flow Condensation in Smooth and Micro-fin Tubes with HCFC-22, HFC-134a and HFC-410 Refrigerants. Part II: Design Equations, Journal of Enhanced Heat Transfer, vol.7, (2000).
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Yang, Y., Jia, L. Experimental investigation on heat transfer coefficient during upward flow condensation of R410A in vertical smooth tubes. J. Therm. Sci. 24, 155–163 (2015). https://doi.org/10.1007/s11630-015-0768-0
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DOI: https://doi.org/10.1007/s11630-015-0768-0