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Natural convection heat transfer estimation from a longitudinally finned vertical pipe using CFD

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Abstract

In this study, CFD analysis of air-heating vaporizers was conducted. A longitudinally finned vertical pipe was used to represent the air-heating vaporizer in the CFD model. Nitrogen gas was used as the working fluid inside the vertical pipe, and it was made to flow upward. Ambient air, which was the heat source, was assumed to contain no water vapor. To validate the CFD results, the convective heat transfer coefficients inside the pipe, hi-c, derived from the CFD results were first compared with the heat transfer coefficients inside the pipe, hi-p, which were derived from the Perkins correlation. Second, the convection heat transfer coefficients outside the pipe, ho-c, derived from the CFD results were compared with the convection heat transfer coefficients, ho-a, which were derived from an analytical solution of the energy equation. Third, the CFD results of both the ambient-air flow pattern and temperature were observed to determine whether they were their reasonability. It was found that all validations showed good results. Subsequently, the heat transfer coefficients for natural convection outside the pipe, ho-c, were used to determine the Nusselt number outside the pipe, Nuo.. This was then correlated with the Rayleigh number, Ra. The results show that Ra and Nuo have a proportional relationship in the range of 2.7414×1012 ≤ Ra ≤ 2.8263×1013. Based on this result, a relation for the Nusselt number outside the pipe, Nuo, was proposed.

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References

  1. K. Sugano, Aug. LNG Vaporizers, Research and Development, Kobe Steel Engineering Reports, 56, No. 2 (2006).

  2. S. C. Lee, Y. H. Lee, H. S. Chung, H. M. Jeong, C. K. Lee and Y. H. Park, Effects on Heat Transfer of Super Low Temperature Vaporizer Respect with of Geometric Parameters, 2 nd International Conference on Cooling and Heating Technologies, Dalian, China, July 26–30 (2006).

  3. H. M. Jeong, H. S. Chung, S. C. Lee, T. W. Kong and C. S. Yi, Optimum Design of Vaporizer Fin with Liquefied Natural Gas by Numerical Analysis, Journal of Mechanical Science and Technology (KSME Int. J.), 20, No. 4, (2006) 545–553.

    Article  Google Scholar 

  4. T. W. Kong, S. C. Lee, Y. H. Lee, H. S. Chung and H. M. Jeong, A Study on The Air Vaporizer for Liquefied Natural Gas with Super Low Temperature, Proceedings of the 3 rd Asian Conference on Refrigeration and Air-conditioning, May 21–23, Gyeongju, South Korea (2006).

  5. S. C. Haldar, G. S. Kochhar, K. Manohar and R. K. Sahoo, Numerical Study of Laminar Free Convection about A Horizontal Cylinder with Longitudinal Fins of Finite Thickness, International Journal of Thermal Sciences, article in press (2006).

  6. N. Morimoto, S. Yamamoto, Y. Yamasaki, T. Shimokawatoko, (Osaka Gas CO., LTD.), K. Shinkai, (KOBE STEEL, LTD.), S. Egashira and K. Konishi, (KOBELCO RESEARCH INSTITUTE, INC.), Development and Practical Application of A High Performance Open-rack LNG Vaporizer (SUPERORV).

  7. K. S. Lee and W. S. Kim, The Effects of Design and Operating Factors on The Frost Growth and Thermal Performance of A Flat Plate Fin-tube Heat Exchanger Under The Frosting Condition, KSME International Journal, 13, No. 12 (1999) 973–981.

    Google Scholar 

  8. B. T. F. Chung, Z. Ma and F. Liu, General Solutions for Optimum Dimensions of Convective Longitudinal Fins with Base Wall Thermal Resistances, Heat Transfer 1998, Proceedings of 11 th IHTC, 5 (1998), August 23–28, Gyeong-ju, Korea.

  9. D. K. Yang and K. S. Lee, Simon Song, Fin Spacing Optimization of A Fin-tube Heat Exchanger under Frosting Conditions, Int. J. of Heat and Mass Transfer 49 (2006) 2619–2625.

    Article  Google Scholar 

  10. D. Seker, H. Karatas and N. Egrican, Frost Formation on fin-and-tube Heat Exchangers. Part I — Modeling of Frost Formation on Fin-and-tube Heat Exchangers, Int. J. of Refrigeration 27 (2004) 367–374.

    Article  Google Scholar 

  11. D. Seker, H. Karatas and N. Egrican, Frost Formation on fin-and-tube Heat Exchangers. Part II — Experimental investigation of frost formation on fin-and-tube heat exchangers, Int. J. of Refrigeration 27 (2004) 375–377.

    Article  Google Scholar 

  12. S. Kakac and Y. Yener, Convective Heat Transfer, 2 nd edition, CRC Press (1995) 304.

  13. K. Dhinsa, C. Bailey and K. Pericleous, Low Reynolds Number Turbulence Models for Accurate Thermal Simulations of Electronic, 5 th Int. Conf. of Thermal and Mechanical Simulation and Experiments in Micro-electronics and Micro-systems, EuroSimE2004 (2004).

  14. T. Norton, Sun Da-Wen, J. Grant, R. Fallon and V. Dodd, Applications of Computational Fluid Dynamics (CFD) in The Modelling and Design of Ventilation Systems in The Agricultural Industry: A Review, Int. J. of Bioresource Technology 98, (2007) 2386–2414.

    Article  Google Scholar 

  15. Star-CD, V3.24, Methodology, CD adapco Group (2004) 6–1, 6–9.

  16. NIST on-line Thermophysical Properties of Fluid System (http://webbook.nist.gov/chemistry/fluid).

  17. S. Kakac and Y. Yener, Convective Heat Transfer, 2nd edition, CRC Press (1995) 301.

  18. F. P. Incropera and D. P. Dewit, Fundamentals of Heat and Mass Transfer, 4 th edition, John Wiley and Sons, Inc. (1996) 113–118.

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Authors and Affiliations

  1. Department of Mechanical and Precision Engineering, The Institute of Marine Industry, Gyeongsang National University, 445 Inpyeong-Dong, Tong-yeong, Gyeongsang-namdo, 650-160, Korea

    Hyo Min Jeong & Han Shik Chung

  2. Department of Mechanical and Precision Engineering, Gyeongsang National University, 445 Inpyeong-dong, Tongyeong, Gyeongsang-namdo, 650-160, Korea

    Yong Hun Lee & Myoung Kuk Ji

  3. Machine Industry Tech Center, Gyeongnam Technopark, 445 Inpyeong-dong, Tong-young Gyeongsang-namdo, 650-160, Korea

    Kang Youl Bae

Authors
  1. Hyo Min Jeong
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  2. Yong Hun Lee
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  3. Myoung Kuk Ji
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  4. Kang Youl Bae
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  5. Han Shik Chung
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Corresponding author

Correspondence to Han Shik Chung.

Additional information

This paper was recommended for publication in revised form by Associate Editor Man Yeong Ha

Hyomin Jeong is currently a professor of Mechanical and Precision Engineering at Gyeongsang Nation University. He received his ph.D. in mechanical engineering from the University of Tokyo in 1992 and he joined Arizona State University as a visiting professor from 2008 to 2009. His research interests are in fluid engineering, CFD, cryogenic system, cascade refrigeration system and ejector system, mechanical vapor compression

Hanshik Chung is a professor of Mechanical and Precision Engineering at Gyeongsang National University. He obtianed his Ph.D. in Mechanical Engineering from Donga University. He joined Changwon Master’s College and Tongyeong Fisher National College as an assistant Professor in 1988 and 1993, respectively. His research fields extend into the thermal engineering, heat transfer, solar heating & cooling system, LNG vaporizer optimum, solar cell, hydrogen compressor for fuel cell and making fresh water system from sea water

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Jeong, H.M., Lee, Y.H., Ji, M.K. et al. Natural convection heat transfer estimation from a longitudinally finned vertical pipe using CFD. J Mech Sci Technol 23, 1517–1527 (2009). https://doi.org/10.1007/s12206-009-0406-4

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  • DOI: https://doi.org/10.1007/s12206-009-0406-4

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