2 K) but maximum rates of entropy generation (i.e. 1.144 J/s-K) and exergy destruction (i.e.343.2 J/s) are found for copper at high flow rates. Minimum rate of entransy dissipation (i.e. 19874.925 J-K/s) and entransy dissipation number (i.e. 0.4516) are obtained for steel at high flow rates. High conductive material for pipe and low flow rates of fluids are recommended to get better performance of HExs in terms of rate of heat transfer, effectiveness, entropy generation, and exergy destruction.

">
0 Contact Us

Thermal Performance Analyses of Concentric Pipe Counter Flow Heat Exchanger at Different Operating Conditions by CFD

Rajendra Pathak*, Ankur Geete**
*Research Scholar, Department of Mechanical Engineering, Sushila Devi Bansal College of Technology, Indore, Madhya Pradesh, India.
**Associate Professor, Department of Mechanical Engineering, Sushila Devi Bansal College of Technology, Indore, Madhya Pradesh, India.
Periodicity:November - January'2019
DOI : https://doi.org/10.26634/jme.9.1.14805

Abstract

In this research work, a concentric pipe counter flow heat exchanger (CPCFHEx) is analyzed to optimize the performance at different conditions. CFD analyses are executed and temperature, pressure, velocity, and turbulence profiles are studied through pipes by CFD simulation method. Effectiveness, overall heat transfer coefficients, pressure drops, and change in velocities for CPCFHEx are found. Entropy, exergy, and entransy analyses are also done with different flow rates and inner pipe materials to find optimum operating conditions. After analyses, maximum temperature difference (i.e. 4.688 K) for cold fluid and effectiveness (i.e. 0.1562) are found for copper at low flow rates (i.e. 0.081 and 0.19 kg/s cold/hot) but maximum temperature difference (i.e. 1.595 K) for hot fluid is found for steel at high flow rates (i.e. 0.1 and 0.22 kg/s cold/hot). Maximum rate of heat transfer (i.e. 1.603 W) and overall heat transfer coefficient (i.e. 3.160 W/m2 K) but maximum rates of entropy generation (i.e. 1.144 J/s-K) and exergy destruction (i.e.343.2 J/s) are found for copper at high flow rates. Minimum rate of entransy dissipation (i.e. 19874.925 J-K/s) and entransy dissipation number (i.e. 0.4516) are obtained for steel at high flow rates. High conductive material for pipe and low flow rates of fluids are recommended to get better performance of HExs in terms of rate of heat transfer, effectiveness, entropy generation, and exergy destruction.

Keywords

 Concentric Pipe Counter Flow Heat Exchanger, Computational Fluid Dynamics, Effectiveness-Entropy-Exergy-Entransy Analyses, Overall Heat Transfer Coefficients, Pressure Drops.

How to Cite this Article?

 Pathak, R., and Geete, A. (2019). Thermal Performance Analyses of Concentric Pipe Counter Flow Heat Exchanger at Different Operating Conditions by CFD. i-manager’s Journal on Mechanical Engineering, 9(1), 1-12. https://doi.org/10.26634/jme.9.1.14805

References
[1]. Ali, S. M. Z. M. S., Krishna, K. M., Reddy, S. D. V. V. S., & Ali, S. R. S. M. (2015). Thermal analysis of double pipe heat exchanger by changing the materials using CFD. International Journal of Engineering Trends and Technology, 26(2), 95-102.
[2]. Anwar, M. K., & Sharqawy, M. H. (2017). Entransy effectiveness for analysis of heat exchangers. Global Journal of Research in Engineering, 17(4), 39-52.
[3]. Cengel, Y. A. (2003). Heat Tranfer-A Practical nd Approach (2 Ed.). New York: Tata McGraw-Hill.
[4]. Chen, L. (2012). Progress in entransy theory and its applications. Chinese Science Bulletin, 57(34), 4404-4426.
[5]. Chen, L. (2014). Progress in optimization of mass transfer processes based on mass entransy dissipation extremum principle. Science China Technological Sciences, 57(12), 2305-2327.
[6]. Chen, L., Xiao, Q., & Feng, H. (2018). Constructal Optimizations for Heat and Mass Transfers based on the Entransy Dissipation Extremum principle, performed at the Naval University of Engineering: A review. Entropy, 20(1), 74.
[7]. Chen, Q., Liang, X. G., & Guo, Z. Y. (2011). Entransy-a novel theory in heat transfer analysis and optimization. In Developments in Heat Transfer. InTech.
[8]. Chen, Q., Liang, X. G., & Guo, Z. Y. (2013). Entransy theory for the optimization of heat transfer–a review and update. International Journal of Heat and Mass Transfer, 63, 65-81.
[9]. Cheng, X., & Liang, X. (2012). Computation of effectiveness of two-stream heat exchanger networks based on concepts of entropy generation, entransy dissipation and entransy-dissipation-based thermal resistance. Energy Conversion and Management, 58, 163- 170.
[10]. Cheng, X., & Liang, X. (2013). Entransy, entransy dissipation and entransy loss for analyses of heat transfer and heat-work conversion processes. Journal of Thermal Science and Technology, 8(2), 337-352.
[11]. Cheng, X., Wang, W., & Liang, X. (2012). Entransy analysis of open thermodynamic systems. Chinese Science Bulletin, 57(22), 2934-2940.
[12]. Feng, H., Chen, L., & Xie, Z. (2018). Constructal optimizations for “+” shaped high conductivity channels based on entransy dissipation rate minimization. International Journal of Heat and Mass Transfer, 119, 640- 646.
[13]. Feng, H., Chen, L., Liu, X., Xie, Z., & Sun, F. (2016). Generalized constructal optimization of strip laminar cooling process based on entransy theory. Science China Technological Sciences, 59(11), 1687-1695.
[14]. Feng, H., Chen, L., Xie, Z., & Sun, F. (2016). Constructal entransy dissipation rate minimization of a rectangular body with nonuniform heat generation. Science China Technological Sciences, 59(9), 1352-1359.
[15]. Gaikwad, D. & Mali, K., (2014). Heat Transfer Enhancement for Double Pipe Heat Exchanger using Twisted Wire Brush Inserts. International Journal of Innovative Research in Science, Engineering and Technology, 3, 14741 - 14748.
[16]. Geete, A. (2017a). Comparative performance analysis of concentric-tube-type heat exchanger at various operating conditions with copper and aluminium tube materials. International Journal of Ambient Energy, 39(5), 446-455.
[17]. Geete, A. (2017b). Exergy, Entransy, and Entransy- Based Thermal Resistance Analyses of Double-Pipe Heat Exchanger with different pipe materials. Heat Transfer Research, 48(18), 1625-1636.
[18]. Geete, A. (2018). Analyses of Entransy Dissipation Ratio and Entropy Generation ratio for Gas Power Cycles at Various Conditions: EDEG Software. Heat Transfer Research. 50(1), 1-16.
[19]. Geete, A., & Khandwawala, A. I. (2014). Entropy Generation and Entransy Dissipation analysis for Steam Power Plants using developed Computer-Aided Software. IUP Journal of Mechanical Engineering, 7(4), 37-53.
[20]. Geete, A., Panchal, J., Mishra, R., Chhalotra, R., Rajput, R. S., & Waghe, S. (2015). Experimental analysis of designed and fabricated Helical Tube Type Heat Exchanger with Copper and Mild Steel Tube Materials. Inventi Impact: Mechanical Engineering, 4, 183-188.
[21]. Geete, A., Patel, V., Tanwar, S. S., Kushwah, S., Lodhi, N. S., & Kushwah, V. (2018). Thermodynamic analysis of designed and fabricated shell-and tube-type heat exchanger by DSTHE software: Kern method. International Journal of Ambient Energy, 39(4), 343-351.
[22]. Gu, J., & Gan, Z. (2014). Fundamentals of Entransy and Entransy Dissipation Theory. In Entransy in Phase- Change Systems (pp. 11-19). Springer, Cham.
[23]. Guo, J., Cheng, L., & Xu, M. (2009). Entransy dissipation number and its application to heat exchanger performance evaluation. Chinese Science Bulletin, 54(15), 2708-2713.
[24]. Guo, Z. Y., Liu, X. B., Tao, W. Q., & Shah, R. K. (2010). Effectiveness–thermal resistance method for heat exchanger design and analysis. International Journal of Heat and Mass Transfer, 53(13-14), 2877-2884.
[25]. Holman, J. P. (2009). Heat Transfer (2nd Ed.). New York: Tata McGraw-Hill.
[26]. Hu, G., Cao, B., & Guo, Z. (2011). Entransy and entropy revisited. Chinese Science Bulletin, 56(27), 2974-2977.
[27]. Johnson, J., Abdul Anzar, V. M., Shani, A., Harif Rahiman, P., Hashmi Hameed, T. S., & Nithin, V. S. (2015). CFD analysis of double pipe Heat Exchanger. International Journal of Science, Engineering and Technology Research (IJSETR), 4(5), 1283-1286.
[28]. Kadari, D., & Elumagandla, S. (2016). Design and fabrication of concentric tube heat exchanger. International Journal of Latest Trends in Engineering and Technology, 7(3), 82-91.
[29]. Kailash, O. P., Bishwajeet, N. K.C., Umang, B.G., Sumit, B. P., & Gopal, A. K.(2015). Design and experimental analysis of pipe in pipe heat exchanger. International Journal of modern engineering Research (IJMER), 5(3), 42- 48.
[30]. Kim, K. H., & Kim, S. W. (2015). Entransy dissipation analysis for optimal design of heat exchangers. Journal of Automation and Control Engineering, 3(2), 87-91.
[31]. Kostic, M. M. (2017). Entransy concept and controversies: A critical perspective within elusive thermal landscape. International Journal of Heat and Mass Transfer, 115, 340-346.
[32]. Kumar, D. S. (2004). Heat and Mass Transfer (3 Ed.). India: S. K. Kataria and Sons.
[33]. Lienhard, H. J. (2008). A Heat Transfer Text Book (2nd Ed.). Massachusetts, USA: Phlogiston Press Cambridge.
[34]. Liu, X., Chen, L., Feng, H., & Sun, F. (2016). Constructal design for blast furnace wall based on the entransy theory. Applied Thermal Engineering, 100, 798-804.
[35]. Mahajan, V., Geete, A., & Rao, S. G. V. R. (2016). CFD analysis of nano fluid across in line tube banks of heat exchanger. International Journal for Rapid Research in Engineering Technology and Applied Science, 2(7), 1-7.
[36]. Malakar, D., & Geete, A. (2018). Application of entropy and entransy concepts to design shell and tube type surface condenser at different 4L/D ratios for Maral Overseas Ltd. International Journal of Ambient Energy, 1- 10.
[37]. Mishra, M., & Nayak, U. K., (2016). Experimental investigations of double pipe heat exchanger with triangular baffles. International Research Journal of Engineering and Technology, 3, 1137-1141.
[38]. Nag, P. K. (2017). Engineering Thermodynamics (3rd ed.). India: Tata McGraw Hill.
[39]. Nagarajan, G., & Ranganathan, S. (2015). Heat transfer enhancement in double pipe heat exchanger with twisted type inserts in ANSYS fluent. International Journal of Engineering Development and Research,3, 216-220.
[40]. Naveen, S., & Bhuvaneshwaran, S. (2017). CFD analysis of Concentric Tube Heat Exchanger using twisted tapes. International Journal of Advance Research, Ideas and Innovations in Technology, 3(1), 870-879.
[41]. Oliveira, S. D. R., & Milanez, L. F. (2012). Entransy and its utilization in problems of thermodynamics and heat transfer. International Review of Mechanical Engineering, 6(3), 420-431.
[42]. Pahare, A., Geete, A., & Tiwari, A. C. (2016). Analytical investigation of cooling capacity of wavy fin compact heat exchanger by using Al O and ZnO nano particles in water 2 3 coolant. VSRD International Journal of Mechanical, Civil, Automobile and Production Engineering, 6, 257-264.
[43]. Pardhi, C. K., & Baredar, P. (2012). Performance improvement of double pipe heat exchanger by using turbulator. International Journal of Engineering Science and Advanced Technology, 2(4), 881-85.
[44]. Perumal, S., Mohan, R., Palanisamy, P., & Kumar, K. S. (2016). Study on double pipe heat exchanger using different enhancement techniques. Imperial Journal of Interdisciplinary Research, 2(2), 455-464.
[45]. Prashanth, D. V., & Santhi, G. (2016). CFD analysis of double pipe parallel flow heat exchanger. International Journal of Professional Engineering Studies, 7(1), 203-210.
[46]. Quadri, S. A. P., & Sheikh, S. J. S. (2016). Evaluating the performance of concentric tube heat exchanger with and without dimples by using CFD analysis, IOSR Journal of Mechanical and Civil Engineering, 13(5), 46-52.
[47]. Shah, R. K., Sekulic, D. P. (2003). Fundamentals of Heat Exchanger Design (2nd Ed.). New York, USA: John Wiley and Sons.
[48]. Sieniutycz, S. (2016). Thermodynamic Approaches in Engineering Systems (2nd Ed.). UK: Elsevier, Oxford.
[49]. Sisodiya, V., & Geete, D. A. (2016). Heat Transfer analysis of Helical coil Heat Exchanger with Al2O3 Nanofluid. International Journal of Engineering and Technology, 3(12), 366-370.
[50]. Soni, J. R., & Khunt, J. B., (2015). CFD analysis and performance evaluation of Concentric Tube in Tube Heat Exchanger. International Journal, for Innovative Research, 2(1), 18-21.
[51]. Sridhar, K., & Bicha, K. (2017). Comparative analysis of Parallel and Counter Flow Heat Exchangers? International Journal of Scientific Engineering and Technology Research, 6(4), 638-644.
[52]. Sumathi, B. A. L.,Vijay, K. (2017). CFD analysis on double pipe hair-pin heat exchanger with different nano fluids. International Journal of Innovative Technology and Research, 5(3), 6471-6476.
[53]. Wang, W.H., Cheng, X., & Liang, X. (2015). Entransy definition and its balance equation for heat transfer with vaporization processes. International Journal of Heat and Mass Transfer, 83, 536-544.
[54]. Whitaker, S. (1983). Fundamental Principles of Heat Transfer (2nd Ed.). Florida, USA: Robert E. Krieger Publishing Company, Inc.
[55]. Xia, S., Chen, L., & Sun, F. (2016). Optimization of equimolar reverse constant-temperature mass-diffusion process for minimum entransy dissipation. Science China Technological Sciences, 59(12), 1867-1873.
[56]. Xia, S., Chen, L., Xie, Z., & Sun, F. (2016). Entransy dissipation minimization for generalized heat exchange processes. Science China Technological Sciences, 59(10), 1507-1516.
[57]. Xu, M. (2011). Entransy dissipation theory and its application in heat transfer? In Development in Heat Transfer InTech. DOI:10.5772/19573.
[58]. Xu, Y. C., Chen, Q., & Guo, Z. Y. (2016). Optimization of heat exchanger networks based on Lagrange multiplier method with the entransy balance equation as constraint. International Journal of Heat and Mass Transfer, 95, 109- 115.
[59]. Yang, A., Chen, L., Xie, Z., Feng, H., & Sun, F. (2016). Thermal performance analysis of non-uniform height rectangular fin based on constructal theory and entransy theory. Science China Technological Sciences, 59(12), 1882-1891.
If you have access to this article please login to view the article or kindly login to purchase the article

Purchase Instant Access

Single Article

North Americas,UK,
Middle East,Europe 		India Rest of world
USD EUR INR USD-ROW
Pdf 35 35 200 20
Online 35 35 200 15
Pdf & Online 35 35 400 25
ADD TO CART

Options for accessing this content:
  • If you would like institutional access to this content, please recommend the title to your librarian.
    Library Recommendation Form
  • If you already have i-manager's user account: Login above and proceed to purchase the article.
  • New Users: Please register, then proceed to purchase the article.
Submit New Paper Track Paper Status Buy Journal Track Your Subscription Journal Archive
Authors Institutions/Librarians Agents Conferences
About Us Contact FAQ Terms and Conditions Privacy Policy Refund & cancellation Policy