Design and Analysis of Helical Cone Coil Heat Exchanger for Low Grade Heat Recovery

Document Type : Full Length Research Article

Authors

1 Department of Mechanical Engineering, SIES Graduate School of Technology, Nerul, Navi Mumbai, 400706, India

2 Department of Mechanical Engineering, Pillai College of Engineering, New Panvel, 410206, India

Abstract

The recovery of low-grade heat is crucial for energy conservation, particularly in manufacturing and process industries that discharge substantial waste energy into the atmosphere. This waste heat, varying from slightly above room temperature to several hundred degrees Celsius, can exist as liquids, gases, or a combination of both. Low-grade heat recovery, also known as waste heat recovery, involves capturing and transferring this energy using gas or liquid mediums, reintroducing it into the process as an additional energy source. This process is essential for improving energy efficiency and promoting sustainability, employing various techniques tailored to the waste heat temperature. Helical cone coils offer significantly enhanced heat transfer characteristics compared to straight tubes. These coils feature a secondary fluid flow running in planes parallel to the primary flow within their helical structure. This study focuses on designing and analyzing a shell and helical cone coil heat exchanger, highlighting its ability to reduce unit size compared to a standard shell-and-tube heat exchanger operating under the same thermal load. The experimental setup included a shell and helical cone coil configuration, utilizing diesel engine exhaust as the hot gas source and tap water as the cold fluid in a counterflow arrangement. The investigation revealed that helical cone coils extracted 15 to 20% more heat compared to conventional straight tubes, demonstrating improved effectiveness and compactness.

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References

[1]   LINES, 2012, Helically Coiled Heat Exchangers Offer Advantages.
[2]   Acharya, N., Sen, M. and Chang, H.C., 2001. Analysis of heat transfer enhancement in coiled-tube heat exchangers. International journal of heat and mass transfer, 44(17), pp.3189-3199
[3]   Ghorbani, N., Taherian, H., Gorji, M. and Mirgolbabaei, H., 2010. An experimental study of thermal performance of shell-and-coil heat exchangers. International Communications in Heat and Mass Transfer, 37(7), pp.775-781. doi: 10.1016/j.icheatmasstransfer.2010.02.001.
[4]   Jouhara, H., Almahmoud, S., Chauhan, A., Delpech, B., Nannou, T., Tassou, S.A., Llera, R., Lago, F. and Arribas, J.J., 2017. Experimental investigation on a flat heat pipe heat exchanger for waste heat recovery in steel industry. Energy Procedia, 123, pp.329-334. doi: 10.1016/j.egypro.2017.07.262.
[5]   Tandale, M.S. and Joshi, S.M., 2008, January. Design of heat exchanger for waste heat recovery from producer gas. In Proceedings of the International Conference on Heat and Mass Transfer, pp. 83–88.
[6]   Gholamalizadeh, E., Hosseini, E., Jamnani, M.B., Amiri, A. and Alimoradi, A., 2019. Study of intensification of the heat transfer in helically coiled tube heat exchangers via coiled wire inserts. International Journal of Thermal Sciences, 141, pp.72-83. doi: 10.1016/j.ijthermalsci.2019.03.029.
[7]   Alimoradi, A. and Veysi, F., 2017. Optimal and critical values of geometrical parameters of shell and helically coiled tube heat exchangers. Case Studies in Thermal Engineering, 10, pp.73-78. doi: 10.1016/j.csite.2017.03.003.
[8]   Purandare, P.S., Lele, M.M. and Gupta, R.K., 2015. Investigation on thermal analysis of conical coil heat exchanger. International Journal of Heat and Mass Transfer, 90, pp.1188-1196. doi: 10.1016/j.ijheatmasstransfer.2015.07.044.
[9]   Joshi, S.M. and Anand, S.R., 2015, February. Design of conical helical coil heat exchanger for waste heat recovery system. In 2015 International Conference on Technologies for Sustainable Development (ICTSD) (pp. 1-8). IEEE. doi: 10.1109/ICTSD.2015.7095883.
[10] Flórez-Orrego, D., Arias, W., López, D. and Velásquez, H., 2012, June. Experimental and CFD study of a single phase cone-shaped helical coiled heat exchanger: an empirical correlation. In Proceedings of the 25th international conference on efficiency, cost, optimization, simulation and environmental impact of energy systems (ECOS 2012, vol. 1, pp. 375-394)
[11] Zolfagharnasab, M.H., Pedram, M.Z., Hoseinzadeh, S. and Vafai, K., 2022. Application of porous-embedded shell and tube heat exchangers for the waste heat recovery systems. Applied Thermal Engineering, 211, p.118452.
[12] Missaoui, S., Driss, Z., Ben Slama, R. and Chaouachi, B., 2024. Effects of helical condenser coil designs on the heating process of the domestic refrigerator for hot water production: A numerical study. Numerical Heat Transfer, Part A: Applications, 85(3), pp.328-350.
[13] Missaoui, S., Driss, Z., Slama, R.B. and Chaouachi, B., 2022. Effects of pipe turns on vertical helically coiled tube heat exchangers for water heating in a household refrigerator. International Journal of Air-Conditioning and Refrigeration, 30(1), p.6.
[14] Missaoui, S., Driss, Z., Slama, R.B. and Chaouachi, B., 2022. Experimental and numerical analysis of a helical coil heat exchanger for domestic refrigerator and water heating. International Journal of Refrigeration, 133, pp.276-288.
[15] Missaoui, S., Driss, Z., Slama, R.B. and Chaouachi, B., 2021. Experimentally validated model of a domestic refrigerator with an immersed condenser coil for water heating. International Journal of Air-Conditioning and Refrigeration, 29(03), p.2150022.S.
[16] Missaoui, S., Driss, Z., Slama, R.B. and Chaouachi, B., 2021. Numerical analysis of the heat pump water heater with immersed helically coiled tubes. Journal of Energy Storage, 39, p.102547.
[17] Missaoui, S., 2024. Optimized shape design and thermal characteristics investigation of helically coiled tube type heat exchanger. Chemical Engineering Research and Design, 201, pp.96-107.
[18] Coleman, H.W. and Steele, W.G., Experimentation and Uncertainty Analysis for Engineers, Wiley, New York, 1989.
[19] ANSI/ASME, Measurement uncertainty, 1986, Report PTC 19, pp. 1–1985.
[20] Kannadasan, N., Ramanathan, K. and Suresh, S., 2012. Comparison of heat transfer and pressure drop in horizontal and vertical helically coiled heat exchanger with CuO/water based nano fluids. Experimental Thermal and Fluid Science, 42, pp.64-70.
[21] Incropera, F.P., DeWitt, D.P., Bergman, T.L. and Lavine, A.S., 1996. Fundamentals of heat and mass transfer, New York, Wiley. ISBN 10:0471304603 / ISBN 13:9780471304609.

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History

  • Receive Date: 17 March 2024
  • Revise Date: 29 June 2024
  • Accept Date: 21 August 2024

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