Performance Evaluation of Ducts with Non-Circular Shapes: Laminar Fully Developed Flow Subjected to T Boundary Condition


(*) Corresponding author


Authors' affiliations


DOI's assignment:
the author of the article can submit here a request for assignment of a DOI number to this resource!
Cost of the service: euros 10,00 (for a DOI)

Abstract


Extended performance evaluation criteria (ExPEC) have been used to assess the performance characteristics of single-phase fully developed laminar flow through bundle of ducts with non-circular shape - rectangular, isosceles triangular, elliptical, trapezoidal and hexagonal. The bundle of circular tubes has been used as a reference heat transfer unit. Constant wall temperature has been selected as the thermal boundary condition. The performance characteristics of the heat transfer unit with non-circular ducts have been evaluated and compared to those of the reference unit for different objectives and constraints imposed. As a common constraint, the hydraulic diameter of the non-circular duct has been specified. The results from this study clearly show that the rectangular, trapezoidal or hexagonal duct configuration can compete, in some cases, with the circular tube configuration. The choice of the tube shape and geometrical details depends on the constraints imposed and the objectives pursued. The results obtained from the present study revealed that they differed from those obtained with a common constraint of specified cross sectional area of the non-circular duct


Copyright © 2013 Praise Worthy Prize - All rights reserved.

Keywords


Performance Evaluation Criteria; Single-Phase Laminar Flow; Non-Circular Ducts; Entropy Generation

Full Text:

PDF


References


R.K. Shah, A.L. London, Laminar Flow Forced Convection in Ducts, 1978, Academic Press.
http://dx.doi.org/10.1016/b978-0-12-020051-1.50013-9

R.K. Shah, M.S. Bhatti, Laminar convective heat transfer in ducts, in: S. Kakaç, R.K. Shah, W. Aung (Eds.), Handbook of Single-Phase Convective Heat Transfer, Wiley, New York, 1987 (Chapter 3).

R.M. Manglik, J. Ding, Laminar flow heat transfer to viscous power-law fluids in double-sine ducts, Int. J. Heat Mass Transfer 40 (1997) 1379-1390.
http://dx.doi.org/10.1016/s0017-9310(96)00185-8

R.M. Manglik, A.E. Bergles, Fully developed laminar heat transfer in circular-segment ducts with uniform wall temperature, Numerical Heat Transfer Part A 26 (1994) 499-519.
http://dx.doi.org/10.1080/10407789408956006

T.M. Harms, M.A.Jog, R.M. Manglik, Effect of temperature dependant viscosity variations and boundary conditions on fully developed laminar forced convection in a semicircular duct, Journal of Heat Transfer 120 (1998) 600-605.
http://dx.doi.org/10.1115/1.2824317

G. Walker, Industrial Heat Exchangers, Hemisphere, New York, 1990.

E.A.D. Saunders, Heat Exchangers: Selection, Design and Construction, Longman, Harlow, UK, 1998.

R.K. Shah, D.P. Sekulić, Fundamentals of Heat Exchanger Design, John Wiley & Sons, Inc., Hoboken, New Jersey, 2003.

R.M. Manglik, Plate heat exchangers for process industry applications: enhanced thermal- hydraulic characteristics of chevron plates, in: R.M. Manglik, A.D. Klaus (Eds.), Process, Enhanced and Multiphase Heat Transfer, Begell House, New York, 1996, pp-267-276.

S.M. Flockhart, R.S. Dhariwal, Experimental and numerical investigation into the flow characteristics of channels etched in silicon, Journal of Fluids Engineering 120 (1998) 291-295.
http://dx.doi.org/10.1115/1.2820647

R.L. Webb, Performance evaluation criteria for use of enhanced heat transfer surfaces in heat exchanger design, Int. J. Heat Mass Transfer 24 (1981) 715-726.
http://dx.doi.org/10.1016/0017-9310(81)90015-6

R.L. Webb, A.E. Bergles, Performance evaluation criteria for selection of heat transfer surface geometries used in low Reynolds number heat exchangers, in Kakac, S., Shah, R.K., Bergles, A.E. (Eds) Low Reynolds Number Flow Heat Exchangers, Hemisphere Publ. Corp., Washington, D.C., 1983, pp. 735-742.

A. Bejan, Entropy Generation through Heat and Fluid Flow, John Wiley & Sons, New York, 1982.

A. Bejan, Entropy Generation Minimization, CRC Press, Boca Raton, 1996.

V.D. Zimparov, Extended performance evaluation criteria for enhanced heat transfer surfaces: heat transfer through ducts with constant wall temperature, Int. J. Heat Mass Transfer 43 (2000) 3137-3155.
http://dx.doi.org/10.1016/s0017-9310(99)00317-8

V.D. Zimparov, Extended performance evaluation criteria for enhanced heat transfer surfaces: heat transfer through ducts with constant heat flux, Int. J. Heat Mass Transfer 44 (2001), 169-180.
http://dx.doi.org/10.1016/s0017-9310(00)00074-0

D.H Richardson, D.P. Seculic, A. Campo, Low Reynolds number flow inside straight micro channels with irregular cross-sections, Heat Mass Transfer 36 (2000) 187-193.
http://dx.doi.org/10.1007/s002310050383

S.Y. Wu, Y.R. Li, Y. Chen, L. Xiao, Energy transfer characteristics of forced convective heat transfer through a duct with constant wall temperature, Energy 32 (2007) 2385-2395.
http://dx.doi.org/10.1016/j.energy.2007.05.014

H.F. Oztop, Effective parameters on second law analysis for semicircular ducts in laminar flow and constant wall heat flux, Int. Comm. Heat Mass Transfer 32 (2005) 266- 274.
http://dx.doi.org/10.1016/j.icheatmasstransfer.2004.05.018

H. F. Oztop, I. Dagtekin, A.Z. Sahin, Second law analysis of fully developed laminar flow for rectangular ducts with semicircular ends, Int. Comm. Heat Mass Transfer 36 (2009) 725-730.
http://dx.doi.org/10.1016/j.icheatmasstransfer.2009.03.021

D.P. Sekulic, A. Campo, J.K. Morales, Irreversibility phenomena associated with heat transfer and fluid friction in laminar flows through singly connected ducts, Int. J. Heat Mass Transfer 40 (1997) 905-914.
http://dx.doi.org/10.1016/0017-9310(96)00123-8

E.B. Ratts, A.G. Raut, Entropy generation minimization of fully developed internal flow with constant heat flux, ASME J. Heat Transfer 126 (2004) 656-659.
http://dx.doi.org/10.1115/1.1777585

T. A. Jankowski, Minimizing entropy generation in internal flows by adjusting the shape of the cross section, Int. J. Heat Mass Transfer 52 (2009) 3439-3445.
http://dx.doi.org/10.1016/j.ijheatmasstransfer.2009.03.016

S. Jarungthammachole, Entropy generation analysis for fully developed laminar convection in hexagonal duct subjected to constant heat flux, Energy 35 (2010) 5374 - 5379.
http://dx.doi.org/10.1016/j.energy.2010.07.020

V.D. Zimparov, V.M. Petkov, Second law analysis of fully developed internal flows with different shape of the cross- section, (2011) International Review of Chemical Engineering (IRECHE), 3 (2), pp. 256-264.

S. Chakraborty, S. Ray, Performance optimization of laminar fully developed flow through square ducts with rounded corners, Int. J. Therm. Sciences 50 (2011) 2522-2535.
http://dx.doi.org/10.1016/j.ijthermalsci.2011.06.006

V.M. Petkov, V.D. Zimparov, A.E. Bergles, Performance Evaluation of Laminar Fully Developed Flow through Ducts With Non-Circular Shapes Subjected to H1 Boundary Condition. Part 1, (2013) International Review of Chemical Engineering (IRECHE), 5 (1), pp. 1-15.
http://dx.doi.org/10.1016/j.ijthermalsci.2013.12.005

V.M. Petkov, V.D. Zimparov, Performance Evaluation of Laminar Fully Developed Flow through Ducts With Non-Circular Shapes Subjected to H1 Boundary Condition. Part 2, (2013) International Review of Chemical Engineering (IRECHE), 5 (2), pp. 74-87.

V.M. Petkov, V.D. Zimparov, A.E. Bergles, Performance evaluation of ducts with non- circular shapes and laminar fully developed flow, (2012) International Review of Chemical Engineering (IRECHE), 4 (4), pp. 379-391.
http://dx.doi.org/10.1016/j.ijthermalsci.2013.12.005

R.S. Sadasivan, Raj M. Manglik, M.A. Jog, Fully developed forced convection through trapezoidal and hexagonal ducts, Int. J. Heat Mass Transfer 42 (1999) 4321-4331.
http://dx.doi.org/10.1016/s0017-9310(99)00091-5

V.M. Petkov, V.D. Zimparov, A.E. Bergles, Performance evaluation of ducts with non- circular shapes: Laminar fully developed flow and constant wall temperature, Int. J. Thermal Sciences (2013) (submitted).
http://dx.doi.org/10.1016/j.ijthermalsci.2013.12.005


Refbacks

  • There are currently no refbacks.


Please send any question about this web site to info@praiseworthyprize.com
Copyright © 2005-2024 Praise Worthy Prize