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Solar Air Heater with Finned Absorber Plate and Helical Flow Path: A CFD Analysis

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Abstract

In the present numerical investigation, a unique design of solar air heater with finned absorber plate allowing helical flow of air is considered. The design enhances the heat transfer rate by enhancing the effective heat transfer area as well as by increasing the flow turbulence. The novel design is compared with a conventional single flow single pass design. Computational study of flow dynamics and heat transfer characteristics for both the considered designs is done at different mass flow rates using commercial software ANSYS FLUENT 18.0. Results indicate a maximum thermal performance enhancement of 3.72 times due to the novel absorber plate design as compared to its flat plate counterpart at a mass flow rate of 0.013 kg/s. The rate of enhancement in the heat transfer coefficient with increase in mass flow rate is much higher in case of solar air heater with helical flow as compared to its conventional counterpart. Thermal and hydraulic performance for both the collectors at different mass flow rate is described in details and the results are supported with different contours.

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REFERENCES

  1. Akpinar, E.K. and Kocyigit, F., Energy and exergy analysis of a new plate solar air heater having different obstacles on absorber plates, Appl. Energy, 2014, vol. 87, pp. 3438–3450.

    Article  Google Scholar 

  2. Kulkarni, K. and Kim, K.Y., Comparative study of solar air heater performance with various shapes and configurations of obstacles, Heat Mass Transfer, 2016, vol. 12, pp. 2795–2811.

    Article  Google Scholar 

  3. Bhushan, B. and Singh, R., Nusselt number and friction factor correlations for solar air heater duct having artificially roughened absorber plate, Sol. Energy, 2011, vol. 85, pp. 1109–1118.

    Article  Google Scholar 

  4. Alam, T. and Kim, M., Heat transfer enhancement in solar air heater duct with conical protrusion toughness ribs, Appl. Therm. Eng., 2017, vol. 126, pp. 458–469.

    Article  Google Scholar 

  5. Thakur, D.S., Khan, M.K., and Pathak, M., Performance evaluation of solar air heater with novel hyperbolic rib geometry, Renewable Energy, 2017, vol. 105, pp. 786–797.

    Article  Google Scholar 

  6. Pashchenko, D.I., ANSYS fluent CFD modeling of solar air-heater thermoaerodynamics, Appl. Sol. Energy, 2018, vol. 54, no. 1, pp. 32–39.

    Article  Google Scholar 

  7. Pashchenko, D.I., ANSYS fluent CFD modeling of solar air-heater thermoaerodynamics, Appl. Sol. Energy, 2018, vol. 54, no. 1, pp. 32–39.

    Article  Google Scholar 

  8. Bayrak, F., Oztop, H.F., and Hepbasli, A., Energy and exergy analysis of porous baffles inserted solar air heaters for building applications, Energy Buildings, 2013, vol. 57, pp. 338–345.

    Article  Google Scholar 

  9. Bayrak, F., Oztop, H.F., and Hepbasli, A., Energy and exergy analysis of porous baffles inserted solar air heaters for building applications, Energy Buildings, 2013, vol. 57, pp. 338–345.

    Article  Google Scholar 

  10. Chamoli, S. and Thakur, N.S., Thermal behaviour in rectangular channel duct fitted with V-shaped perforated baffles, Heat Transfer Eng., 2015, vol. 36, no. 5, pp. 471–479.

    Article  Google Scholar 

  11. Karwa, R. and Maheshwari, B.K., Heat transfer and friction in an asymmetrically heated rectangular duct with half and fully perforated baffles at different pitches, Int. Commun. Heat Mass Transfer, 2009, vol. 36, no. 3, pp. 264–268.

    Article  Google Scholar 

  12. Chamoli, S., Lu, R., Xu, D., and Yu, P., Thermal performance improvement of a solar air heater fitted with winglet vortex generators, Sol. Energy, 2018, vol. 159, pp. 966–983.

    Article  Google Scholar 

  13. Bezbaruah, P.J., Das, R.S., and Sarkar, B.K., Thermo-hydraulic performance augmentation of solar air duct using modified forms of conical vortex generators, Heat Mass Transfer, 2018, vol. 55, no. 5, pp. 1384–1403.

    Google Scholar 

  14. Chompookham, T., Thianpong, C., Kwankaomeng, S., and Promvonge, P., Heat transfer augmentation in a wedge-ribbed channel using winglet vortex generators, Int. Commun. Heat Mass Transfer, 2010, vol. 37, no. 2, pp. 163–169.

    Article  Google Scholar 

  15. Luo, L., Wen, F.B., Wang, L., Sunden, B., and Wang, S.T., Thermal enhancement by using grooves and ribs combined with delta-winglet vortex generator in a solar receiver heat exchanger, Appl. Energy, 2016, vol. 183, pp. 1317–1332.

    Article  Google Scholar 

  16. Rai, S., Chand, P., and Sharma, S.P., An analytical investigation on thermal and thermohydraulic performance of offset finned absorber solar air heater, Sol. Energy, 2017, vol. 153, pp. 25–40.

    Article  Google Scholar 

  17. Abhishek, P. and Prabha, C., Thermal and thermohydraulic performance of wavy finned absorber solar air heater, Sol. Energy, 2016, vol. 130, pp. 250–259.

    Article  Google Scholar 

  18. Bhandari, D. and Singh, S., Performance analysis of flat plate solar air collector with and without fins, Int. J. Eng. Res. Technol., 2012, vol. 1, no. 6, pp. 2278–0181.

    Google Scholar 

  19. Chabane, F., Noureddine, M., and Said, B., Experimental performance of solar air heater with internal fins inferior an absorber plate: in the region of Biskra, Int.J. Energy Technol., 2012, vol. 33, pp. 1–6.

    Google Scholar 

  20. Chabane, F., Moummi, N., Bensahal, D., and Brima, A., Heat transfer coefficient and thermal losses of solar collector and Nusselt number correlation for rectangular solar air heater duct with longitudinal fins hold under the absorber plate, Appl. Sol. Energy, 2014, vol. 50, no. 1, pp. 19–26.

    Article  Google Scholar 

  21. Nwosu, N.P., Employing exergy-optimized pin fins in the design of an absorber in a solar air heater, Appl. Sol. Energy, 2009, vol. 45, no. 4, pp. 248–253.

    Article  Google Scholar 

  22. Sharma, S.P., Saini, J.S., and Varma, H.K., Thermal performance of packed-bed solar air heaters, Sol. Energy, 1991, vol. 47, no. 2, pp. 59–67.

    Article  Google Scholar 

  23. Swartman, R.K. and Ogunade, O., An investigation on packed bed collectors, Sol. Energy, 1966, vol. 10, no. 3, pp. 106–110.

    Article  Google Scholar 

  24. Mishra, C.B. and Sharma, S.P., Performance study of air-heated packed-bed solar energy collector, Energy, 1981, vol. 6, pp. 153–157.

    Article  Google Scholar 

  25. Eswaramoorthy, M., Thermal performance of V-trough solar air heater with the thermal storage for drying applications, Appl. Sol. Energy, 2016, vol. 52, no. 4, pp. 245–250.

    Article  Google Scholar 

  26. Tyagi, R.K., Ranjan, R., and Kishore, K., Performance studies on flat plate solar air heater subjected to various flow patterns, Appl. Sol. Energy, 2014, vol. 50, no. 2, pp. 98–102.

    Article  Google Scholar 

  27. Saxena, A., Srivastava, G., and Tirth, V., Design and thermal performance evaluation of a novel solar air heater, Renewable Energy, 2015, vol. 77, pp. 501–511.

    Article  Google Scholar 

  28. Pashchenko, D.I., CFD modelling of operating processes of a solar air heater in Ansys Fluent, J. Eng. Phys. Thermophys., 2019, vol. 92, no. 1, pp. 73–79.

    Article  Google Scholar 

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ACKNOWLEDGMENTS

This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors. Nonetheless, the authors of this work would like to take the time to acknowledge the support of the staffs of Computational laboratory of Mechanical Engineering Department, at the National Institute of Technology Meghalaya, India. Their assistance was critical in making this work possible. Without their support, this work would not have been possible. We are indeed very grateful.

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Authors and Affiliations

  1. Researcher, National Institute of Technology Meghalaya, Shillong, India

    Parag Jyoti Bezbaruah

  2. Assistant Professor, PhD, National Institute of Technology Meghalaya, Shillong, India

    Rajat Subhra Das & Bikash Kumar Sarkar

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  1. Parag Jyoti Bezbaruah
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  2. Rajat Subhra Das
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  3. Bikash Kumar Sarkar
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Correspondence to Parag Jyoti Bezbaruah.

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Parag Jyoti Bezbaruah, Rajat Subhra Das & Sarkar, B.K. Solar Air Heater with Finned Absorber Plate and Helical Flow Path: A CFD Analysis. Appl. Sol. Energy 56, 35–41 (2020). https://doi.org/10.3103/S0003701X20010041

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