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A Numerical Study of Single-phase Forced Convective Heat Transfer in Tube in Tube Heat Exchangers
Abstract:Three dimensional simulations in tube in tube heat exchangers are investigated numerically in this study. In these simulations forced convective heat transfer and laminar flow of single-phase water are considered. In order to measure heat transfer parameters in these heat exchangers, FLUENT CFD Solver is used in this numerical method. For the purpose of creating geometry and exert boundary and initial conditions in the present model, finite volume method in Computational Fluid Dynamics is used in this study. In the present study, at each Z-location, variation of local temperatures, heat flux and Nusselt number at the whole tube is investigated in detail. Thereafter, averaged computational Nusselt number in this model is calculated. In addition, conceivable pressure drops have been obtained at each Z-location in this model. Then, pressure drop values in the present model are explored. Finally, all the numerical results for this kind of heat exchanger will be discussed precisely.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1073243Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1758
 D. Butterworth and C. F. Mascone, "Heat Transfer Heads Into the 21st Century," Chem. Eng. Prog., Sept., pp. 30-37 1991.
 R. K. Shah, et al., Compact Heat Exchangers, Hemishphere Publishing Co., NewYork 1990.
 J. M. Robertson, "The Development of Compact Heat Exchangers to Save Weight, Space, and Power Offshore," TEC88 Conference: Recent Advances in Heat Exchangers, Oct. 12-13, Grenoble, UK 1988.
 Rawlins, Timmerhaus and Radebaugh, " Measurement of Performance of a Spiral Wound Polyimide Regenerator in Pulse Tube Refrigerator ", Adv. Cryogenic Eng., Vol.37, part B, p.947, 1991.
 J. A. Crunkleton, J. L. Smith, Jr. and Y. Iwasa, " High Pressure Ratio Cryocooler with Integral Expander and Heat Exchanger", Adv. Cryogenic Eng., vol.33, p.809, 1988.
 E. B. Ratts, J. L. Smith, Jr. and Y. Iwasa, " Heat Transfer and Friction Factor Data for Gap Helical Screen Fin Counter Flow Heat Exchanger", Adv. Cryogenic Eng., vol.39, part A, pp.1607- 1614, 1993.
 R. B. Fleming, " The Effect of Flow Distribution In Parallel Channels of Counter Flow Heat Exchangers ", Adv. Cryogenic Eng., vol.12, pp. 352-362, 1967.
 A. E. Bergles, "Heat Transfer EnhancementÔÇöThe Encouragement and Accommodation of High Fluxes", Trans, ASME J. Heat Transfer, vol. 119, pp. 8-19, 1997.
 R. L. Webb, Principles of Enhancement Heat Transfer, Wiley, 1994.
 P. Stehlik, J. Nemcansky, D. Kral, and L. W. Swanson, "Comparison of Correction Factors for Shell-and-Tube Heat Exchangers with Segmental or Helical Baffles", Heat Transfer Eng., vol. 15, pp. 55-65, 1994.
 D. Kral, P. Stehlik, H. J. van der Ploeg and B. I. Master, "Helical Baffles in Shell-and-Tube Heat Exchangers, Part I: Experimental Verification", Heat Transfer Eng., vol. 17, pp. 93- 101, 1996.
 F. P. Incropera, D. P. DeWitt, T. L. Bergman, A. S. Lavine, "Introduction to Heat Transfer", Fifth edition, Wiley , Newyork, 2007.