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Warianty tytułu
Języki publikacji
Abstrakty
The optimization of finned tube heat exchanger is presented focusing on different fluid velocities and the consideration of aerodynamic configuration of the fin. It is reasonable to expect an influence of fin profile on the fluid streamline direction. In the cross-flow heat exchanger, the air streams are not heated and cooled evenly. The fin and tube geometry affects the flow direction and influences temperature changes. The heat transfer conditions are modified by changing the distribution of fluid mass flow. The fin profile impact also depends on the air velocity value. Three-dimensional models are developed to find heat transfer characteristics between a finned tube and the air for different air velocities and fin shapes. Mass flow weighted average temperatures of air volume flow rate are calculated in the outlet section and compared for different fin/tube shapes in order to optimize heat transfer between the fin material and air during the air flow in the cross flow heat exchanger.
Czasopismo
Rocznik
Tom
Strony
87--104
Opis fizyczny
Bibliogr. 15 poz.,Rys., tab., wz.,
Twórcy
autor
- Cracow University of Technology, Department of Thermal and Power Engineering, al. Jana Pawła II 37, 31-864 Krakow, Poland, wais@mech.pk.edu.pl
Bibliografia
- [1] Kraus A., Aziz A., Welty J.: Extended Surface Heat Transfer. Willey-Interscience Publication, 2001.
- [2] Ullmann A., Kalman H.: Efficiency and optimized dimensions of annular fins of different cross-section shapes. Int. J. Heat Mass Transfer, 32(1989), 6, 1105–1110.
- [3] Sharqawy M.H., Zubair S.M.: Efficiency and optimization of an annular fin with combined heat and mass transfer — An analytical solution. Int. Journal of Refrigeration, 30(2007), 751–757.
- [4] Kundu B., Das P.K.: Optimum dimensions of plate fins for fin-tube heat exchangers. Int. J. Heat and Fluid Flow, 18(1997), 530–537.
- [5] Rocha L.A.O., Saboya F.E.M.: A comparative study of elliptical and circular sections in one and two-row tubes and plate fin heat exchangers. Int. J. Heat and Fluid Flow, 18(1997), 247–252.
- [6] Dul’kin I.N., Garas’ko G.I.: Analytical solutions of 1-D heat conduction problem for a single fin with temperature dependent heat transfer coefficient — I. Closed-form inverse solution. Int. Journal of Heat and Mass Transfer, 45(2002), 1895–1903.
- [7] Dul’kin I.N., Garas’ko G.I.: Analytical solutions of 1-D heat conduction problem for a single fin with temperature dependent heat transfer coefficient — II. Recurrent direct solution. Int. Journal of Heat and Mass Transfer, 45(2002), 1895–1903.
- [8] Mokheimer E.M.A.: Performance of annular fins with different profiles subject to variable heat transfer coefficient. Int. Journal of Heat and Mass Transfer, 45(2002), 3631–3642.
- [9] Arslanturk C.: Performance analysis and optimization of a thermally nonsymmetric annular fin. Int. Comm. Heat Mass Transfer, 31(2004), 8, 1143–1153.
- [10] Arslanturk C.: A decomposition method for fin efficiency of convective straight fins with temperature-dependent thermal conductivity. Int. Comm. Heat and Mass Transfer, 32(2005), 831–841.
- [11] Malekzadeh P., Rahideh H., Setoodeh A.R.: Optimization of non-symmetric convective-radiative annular fins by differential quadrature method. Energy Conversion and Management 48(2007), 1671–1677.
- [12] Khani F., Raji M.A., Nejad H.H.: Analytical solutions and efficiency of the nonlinear fin problem with temperature-dependent thermal conductivity and heat transfer coefficient. Communications in Nonlinear Science and Numerical Simulation, 14(2009), 3327–3338.
- [13] Aziz A., Fang T.: Alternative solutions for longitudinal fins of rectangular, trapezoidal, and concave parabolic profiles. Energy Conversion Management, 2010, doi:10.1016/j.enconman.2010.03.012
- [14] Kundu B., Das P.K.: Performance analysis and optimization of straight taper fins with variable heat transfer coefficient. Int. Journal of Heat and Mass Transfer 45(2002), 4739–4751.
- [15] Laor K., Kalman H.: Performance and optimum dimensions of different cooling fins with a temperature-dependent heat transfer coefficient. Int. J. Heat Mass Transfer, 39(1996), 9, 1993–2003.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BGPK-2912-1471