Numerical Analysis of Fluid Flow and Heat Transfer for Different Fin Designs and Arrangements of Ceramic Plate-Fin High Temperature Heat Exchanger - Part I

Yitung Chen, Vijaisri Nagarajan

Abstract


In this study numerical analysis is carried out for four different types of fins namely rectangular, triangular, inverted bolt fins and ripsaw fins and two different types of arrangements namely staggered and top and bottom arrangement. The obtained results are compared with each other and the design with best heat transfer and minimum pressure drop is selected. The working fluids used in the model are sulfur trioxide, sulfur dioxide, oxygen and water vapor. The operating pressure is 1.5 MPa and the operating temperature ranges from 973 K to 1223 K. From the results it was found that the ripsaw fin design with thickness of 0.00005 m gives a good heat transfer rate with minimum pressure drop. The inverted bolt fins also gives a good heat transfer rate but due to the fin arrangement and the flow disturbances caused by the arrangement the pressure drop is the highest compared to other fins. The pressure drop and the heat transfer obtained for the rectangular and triangular fins are similar to each other. Friction factor, Colburn j- factor and non-dimensionless numbers like Nusselt number, Schmidt number are calculated for all the models. The average Nusselt number obtained for the ripsaw fin design with thickness of 0.00005 m for the staggered and top and bottom arrangement are 3.197 and 3.023. The friction factor for the ripsaw fins for the staggered and the top and bottom arrangement are 0.522 and 0.589.


Keywords


Heat transfer enhancement, Heat exchanger

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References


Hesselgreaves, J. E. (2001). Compact Heat Exchangers Selection, Design and Operation. Oxford, UK: Elsevier Science Ltd.

Sahin, B. O. (2008). Horseshoe vortex studies in the passage of a model plate-fin-and-tube heat exchanger. International Journal of Heat and Fluid Flow, 29, 340-351.

Kayansayan, N. (1994). Heat transfer characterization in plate-fin tube heat exchangers. International Journal of Refrigeration, 17, 49-57.

Ranganayakulu, C. & Seetharamu. K.N. (1999). The combined effects of wall longitudinal heat conduction, inlet fluid flow non-uniformity and temperature non-uniformity in compact tube-fin heat exchangers: a finite element method. International Journal of Heat and Mass Transfer, 42, 263-73.

Wen, J. & Liu. (2004). Study of Flow Distribution and Its Improvement on the Header of Plate-fin Heat Exchanger. Cryogenics, 44(11), 823-831.

Leu, J. S. (2004). Heat transfer and fluid flow analysis in plate fin and tube heat exchangers with a pair of block shape vortex generators. J Eng Thermophys, 47(19-20), 4327-38.

Manglik, R. M. &. Bergles, A. E. (1995). Heat transfer and pressure drop correlations for the rectangular offset strip fin compact heat exchanger. Experimental Thermal and Fluid Science, 10, 171-80.

Bhowmik. H., &. Lee.K. (2008). Analysis of heat transfer and pressure drop characteristics in an offset strip fin heat exchanger. International Communications in Heat and Mass Transfer, 36(3), 259-263.

Ma, T., Wang, Q. W., Zeng, M., Chen, Y., Liu, Y., & Nagarajan, V. (2012). Study on heat transfer and pressure drop performances of ribbed channel in the high temperature heat exchanger. Applied energy, 99, 393-401.

Dong, J., Chen, J., Chen, J., Zhang, W., & Zhou, Y (2007). Heat transfer and pressure drop correlations for the multi-louvered fin compact heat exchangers. Energy Conversion and Management, 48(5), 1506-1515.

Schulte-Fischedick, J., Dreibigacker, V., & Tamme, R. (2007). An innovative ceramic high temperature plate-fin heat exchanger for EFCC processes. Applied Thermal Engineering, 27(8-9), 1285-94.

Monteiro, D. &. B., & Batista De Mello, P.E. (2012). Thermal performance and pressure drop in a ceramic heat exchanger evaluated using CFD simulations. Energy, 45, 489-496.

Ponyavin, V., Chen, Y., Mohamed, T., Trabia, M.B., Hechanova, A.E., & Wilson, M. (2012). Design of a compact ceramic high-temperature heat exchanger and chemical decomposer for hydrogen production. Heat Transfer Engineering, 33(10), 853-70.

Nagarajan, V., Chen, Y., Wang, Q., & Ma, T. (2014). Hydraulic and thermal performances of a novel configuration of high temperature ceramic plate-fin heat exchanger. Applied Energy, 113, 589-602.

SOLIDWORKS 2013., SOLIDWORKS Corp.

ANSYS Inc. (2011). ANSYS 14.5 user's guide.

Patankar, S. (1980). Numerical Heat Transfer and Fluid Flow. New York.

Manson, S. V. (1950). Correlations of heat transfer data and friction data for interrupted plate fins staggered in successive rows. Washington DC: National Advisory Committee for Aeronautics.

Wieting, A. R. (1975). Empirical correlations for heat transfer and flow friction characteristics of rectangular offset-fin-plate-fin heat exchanger. ASME, Int J. Heat Transfer, 97, 480-490.




DOI: http://dx.doi.org/10.21622/resd.2015.01.1.089

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Copyright (c) 2015 Yitung Chen

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Renewable Energy and Sustainable Development

E-ISSN: 2356-8569

P-ISSN: 2356-8518

 

Published by:

Academy Publishing Center (APC)

Arab Academy for Science, Technology and Maritime Transport (AASTMT)

Alexandria, Egypt

resd@aast.edu