Heat transfer unit for high reynolds number flow

Details Heat transfer unit for high reynolds number flow Heat transfer unit for high reynolds number flow

2011-06-07

2011-06-07

Duong, Tho V (Department: 3744)

Heat exchange

Tubular structure

With discrete heat transfer means

C165S109100

Reexamination Certificate

active

07954544

ABSTRACT:
In one aspect, a heat transfer unit is provided for increasing the temperature of process fluids, such as gas-phase fluids, having a Reynolds Number (RE) of at least about 275,000 with a low overall pressure drop and without exceeding the wall temperature limits of the material used to construct the heater. The heater generally includes a heater conduit having the gas-phase fluid flowing therethrough and a heat source, such as a radiant heat source, providing an inconsistent or variable heat flux along a length of the heater conduit where the heat source has a peak heat flux greater than an average heat flux.

REFERENCES:
patent: 3572296 (1971-03-01), Carson et al.
patent: 4314587 (1982-02-01), Hackett
patent: 4342642 (1982-08-01), Bauer et al.
patent: 4997525 (1991-03-01), Martens et al.
patent: 5271809 (1993-12-01), Holzhausen
patent: 5409675 (1995-04-01), Narayanan
patent: 5820362 (1998-10-01), Broach
patent: 6044837 (2000-04-01), Tyler
patent: 6419885 (2002-07-01), Di Nicolantonio et al.
patent: 6644358 (2003-11-01), Demarest et al.
patent: 6827074 (2004-12-01), Gardner
patent: 7135105 (2006-11-01), Zeng et al.
patent: 2005/0045319 (2005-03-01), Leterrible et al.
patent: 2008/0149309 (2008-06-01), Li et al.
patent: 07-091743 (1995-04-01), None
patent: 10-088616 (2005-09-01), None
D. Q. Kern,Process Heat Transfer, McGraw-Hill, New York, 1950, p. 55.
M. McEligot, P. M. Magee, and G. Leppert, “Effect of Large Temperature Gradients on Convective Heat Transfer: The Downstream Region,”Transactions of the American Society of Mechanical Engineers, Series C: Journal of Heat Transfer, vol. 87, Feb. 1965, pp. 67-76.
S. K. Thomas, R. M. Castle, and K. L. Yerkes, “The Effect of Working Fluid Inventory on the Performance of Helically Grooved Heat Pipes,” Wright State University, Interim Report for Aug. 21, 1998-Aug. 20, 1999 prepared for Propulsion Directorate, Air Force Research Laboratory, Air Force Material Command, Wright-Patterson AFB, Ohio, Sep. 1999, 107 pages.
Kreyszig,Advanced Engineering Mathmatics, John Wiley & Sons, Inc., 8th Edition, 1999, p. 430.
J. R. Thome, “Chapter 5, Enhanced Single-Phase Turbulent Tube-side Flows and Heat Transfer,”Engineering Data Book III, © 2004-2006 by Wolverine Tube, Inc., [online]. Retrieved from the Internet: <URL: http://www.wlv.com/products/databook/db3/DataBookIII.pdf> 31 pages.
UOP LLC,Thermal Conductivity of Metals—Process Department Chart 27, undated, one page.
L. V. Humble, W. H. Lowdermilk, and L. G. Desmon, “Measurements of Average Heat-Transfer and Friction Coefficients for Subsonic Flow of Air in Smooth Tubes at High Surface and Fluid Temperatures,”NACAReport No. 1020, 1951, pp. 343-357.
W. H. McAdams,Heat Transmission, McGraw-Hill, New York, 1954, p. 155.
R. B. Bird, W. E. Stewart, and E. N. Lightfoot,Transport Phenomena, Wiley, New York, 1960, pp. 391, 402.
D. F. Dipprey and R. H. Sabersky, “Heat and Momentum Transfer in Smooth and Rough Tubes at Various Prandtl Numbers,”Int. J. Heat Mass Transfervol. 6, 1963, pp. 329-353.
D. M. McEligot, “Effect of Large Temperature Gradients on Turbulent Flow of Gases in the Downstream Region of Tubes,” Dissertation, Stanford University, 1963, University Microfilms, Inc., Ann Arbor, Michigan, 241 pages.
L. W. Carson, “Heat Transfer Capability,”Mechanical Engineeringvol. 89, Jul. 1967, p. 55.
Wolfshtein, “The Velocity and Temperature Distribution in One-Dimensional Flow with Turbulence Augmentation and Pressure Gradient,”Int. J. Heat Mass Transfervol. 12, 1969, pp. 301-318.
P. J. Schneider, “Conduction,”Handbook of Heat Transfer, Ed. W. M. Rohsenow and J. P. Hartnett, McGraw, New York, 1973, pp. 3-115 and 3-116.
T. C. Carnavos, “Heat Transfer Performance of Internally Finned Tubes in Turbulent Flow,” Heat Transfer Engineering vol. 1, No. 4, Apr.-Jun. 1980, pp. 32-37.
A. Bejan,Entropy Generation Through Heat and Fluid Flow, Wiley, New York, 1982, pp. 107-109, 125.
T. S. Ravigururajan and A. E. Bergles, “General Correlations for Pressure Drop and Heat Transfer for Single-Phase Turbulent Flow in Internally Ribbed Tubes,”Augmentation of Heat Transfer in Energy Systems, Special issue of ASME HTD 52, 1985, pp. 9-20.
T. A. Wells, “Specialty Furnace Design: Steam Reformers and Steam Crackers,” for Presentation at the 1988 Spring National Meeting in New Orleans, Mar. 1988, The M. W. Kellogg Company, Houston, 1988, 35 pages.
J. V. Albano, K. M. Sundaram, and J. J. Maddock, “Applications of Extended Surfaces in Pyrolysis Coils,”Energy Progressvol. 8, No. 3, Sep. 1988, pp. 160-168.
Crane Co. Engineering Department,Flow of Fluids Through Valves, Fittings, and Pipe, Technical Paper No. 410, Crane, 1988, p. A-24.
Kim and R. L. Webb, “Analytic Prediction of the Friction and Heat Transfer for Turbulent Flow in Axial Internal Fin Tubes,”Journal of Heat Transfervol. 115, Aug. 1993, pp. 553-559.
T. Shih, W. W. Liou, A. Shabbir, Z. Yang, and J. Zhu, “A New k-epsilon Eddy Viscosity Model for High Reynolds Number Turbulent Flows,”Computer Fluidsvol. 24, No. 3, 1995, pp. 227-238.
American Petroleum Institute,Calculation of Heater-Tube Thickness in Petroleum Refineries, API Standard 530, 4th Edition, Washington, 1996, p. 106.
J. J. De Saegher, T. Detemmerman, and G. F. Froment, “Three Dimensional Simulation of High Severity Internally Finned Cracking Coils for Olefins Production,”Revue De L'Institut Francais Du Petrolevol. 51, No. 2, Mar.-Apr. 1996, pp. 245-260.
Haynes International, Inc.,Hastelloy® X Alloy, Brochure H-3099A, Haynes, Kokomo, 1997, p. 10.
A. E. Bergles, “Techniques to Enhance Heat Transfer,”Handbook of Heat Transfer, Ed. W. M. Rohsenow, J. P. Hartnett, and Y. I. Cho, 3rd Ed., McGraw, New York, 1998, p. 11.20 Chapter Eleven.
D. Gi Daspow,Computational Techniques in Fluidization and Multiphase Flow, Chapter 1, Unpublished textbook, 2006, p. 19.
Fluent, Inc., “11.9.3 Enhanced Wall Treatment,” Jan. 4, 2005, [online], [retrieved on Mar. 28, 2007]. Retrieved from the Internet: <URL: file://C:\Fluent.Inc\fluent6.2.16\help\html\ug\\node.460.htm > 6 pages.
Fluent, Inc., “11.4.3 The Realizable k-epsilon Model,” Jan. 4, 2005, [online], [retrieved on Mar. 30, 2007]. Retrieved from the Internet: <URL: file://C\Fluent.Inc\fluent6.2.16\help\html\ug\node434.htm > 4 pages.

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