IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v13y2020i5p1099-d327105.html
   My bibliography  Save this article

CFD Analysis on the Heat Transfer and Fluid Flow of Solar Air Heater having Transverse Triangular Block at the Bottom of Air Duct

Author

Listed:
  • Hwi-Ung Choi

    (Department of Refrigeration and Air-Conditioning Engineering, Pukyong National University, Busan 48513, Korea)

  • Kwang-Hwan Choi

    (Department of Refrigeration and Air-Conditioning Engineering, Pukyong National University, Busan 48513, Korea)

Abstract

In this study, a two-dimensional CFD (computational fluid dynamics) analysis was performed to investigate the heat-transfer and fluid-friction characteristics in a solar air heater having a transverse triangular block at the bottom of the air duct. The Reynolds number, block height ( e ), pitch ( P ), and length ( l ) were chosen as design parameters. The results are validated by comparing the Nusselt number predicted by simulation with available experimental results. Renormalization-group (RNG) k - ε model with enhanced wall-treatment was selected as the most appropriate turbulence model. From the results, it was found that the presence of a transverse triangular block produces a higher Nusselt number than that of smooth air duct. The enhancement in Nusselt number varied from 1.19 to 3.37, according to the geometric conditions investigated. However, the use of transverse triangular block also results in significantly higher friction losses. The thermohydraulic performance (THPP) was also estimated and has a maximum value of 1.001 for height ( e ) of 20 mm, length ( l ) of 120 mm, and pitch ( P ) of 150 mm, at Reynolds number of 8000. Furthermore, in the present study, correlations of the Nusselt number and friction factor were developed as a function of geometrical conditions of the transverse triangular block and Reynolds number, which can be used to predict the value of Nusselt number and friction factor with the absolute percentage deviations of 3.29% and 7.92%, respectively.

Suggested Citation

  • Hwi-Ung Choi & Kwang-Hwan Choi, 2020. "CFD Analysis on the Heat Transfer and Fluid Flow of Solar Air Heater having Transverse Triangular Block at the Bottom of Air Duct," Energies, MDPI, vol. 13(5), pages 1-19, March.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:5:p:1099-:d:327105
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/13/5/1099/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/13/5/1099/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Chii-Dong Ho & Hsuan Chang & Ching-Fang Hsiao & Chien-Chang Huang, 2018. "Device Performance Improvement of Recycling Double-Pass Cross-Corrugated Solar Air Collectors," Energies, MDPI, vol. 11(2), pages 1-18, February.
    2. Anil Kumar & Man-Hoe Kim, 2016. "CFD Analysis on the Thermal Hydraulic Performance of an SAH Duct with Multi V-Shape Roughened Ribs," Energies, MDPI, vol. 9(6), pages 1-23, May.
    3. Verma, S.K & Prasad, B.N, 2000. "Investigation for the optimal thermohydraulic performance of artificially roughened solar air heaters," Renewable Energy, Elsevier, vol. 20(1), pages 19-36.
    4. Kumar, Sharad & Saini, R.P., 2009. "CFD based performance analysis of a solar air heater duct provided with artificial roughness," Renewable Energy, Elsevier, vol. 34(5), pages 1285-1291.
    5. Singh, Sukhmeet & Singh, Bikramjit & Hans, V.S. & Gill, R.S., 2015. "CFD (computational fluid dynamics) investigation on Nusselt number and friction factor of solar air heater duct roughened with non-uniform cross-section transverse rib," Energy, Elsevier, vol. 84(C), pages 509-517.
    6. Singh, Sukhmeet & Chander, Subhash & Saini, J.S., 2011. "Heat transfer and friction factor correlations of solar air heater ducts artificially roughened with discrete V-down ribs," Energy, Elsevier, vol. 36(8), pages 5053-5064.
    7. Yadav, Anil Singh & Bhagoria, J.L., 2013. "A CFD (computational fluid dynamics) based heat transfer and fluid flow analysis of a solar air heater provided with circular transverse wire rib roughness on the absorber plate," Energy, Elsevier, vol. 55(C), pages 1127-1142.
    8. Gawande, Vipin B. & Dhoble, A.S. & Zodpe, D.B. & Chamoli, Sunil, 2016. "A review of CFD methodology used in literature for predicting thermo-hydraulic performance of a roughened solar air heater," Renewable and Sustainable Energy Reviews, Elsevier, vol. 54(C), pages 550-605.
    9. Wandong Zheng & Huan Zhang & Shijun You & Yindan Fu, 2017. "Experimental Investigation of the Transpired Solar Air Collectors and Metal Corrugated Packing Solar Air Collectors," Energies, MDPI, vol. 10(3), pages 1-12, March.
    10. Yadav, Anil Singh & Bhagoria, J.L., 2013. "Heat transfer and fluid flow analysis of solar air heater: A review of CFD approach," Renewable and Sustainable Energy Reviews, Elsevier, vol. 23(C), pages 60-79.
    11. Prasad, K. & Mullick, S. C., 1983. "Heat transfer characteristics of a solar air heater used for drying purposes," Applied Energy, Elsevier, vol. 13(2), pages 83-93, February.
    12. Varun Kumar B. & G. Manikandan & P. Rajesh Kanna & Dawid Taler & Jan Taler & Marzena Nowak-Ocłoń & Karol Mzyk & Hoong Thiam Toh, 2018. "A Performance Evaluation of a Solar Air Heater Using Different Shaped Ribs Mounted on the Absorber Plate—A Review," Energies, MDPI, vol. 11(11), pages 1-20, November.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Hwi-Ung Choi & Kwang-Am Moon & Seong-Bhin Kim & Kwang-Hwan Choi, 2023. "CFD Analysis of the Heat Transfer and Fluid Flow Characteristics Using the Rectangular Rib Attached to the Fin Surface in a Solar Air Heater," Sustainability, MDPI, vol. 15(6), pages 1-18, March.
    2. Byeong-Hwa An & Kwang-Hwan Choi & Hwi-Ung Choi, 2023. "Heat Transfer Augmentation and Friction Factor Due to the Arrangement of Rectangular Turbulators in a Finned Air Channel of a Solar Air Heater," Energies, MDPI, vol. 16(19), pages 1-18, September.
    3. Choi, Hwiung & Choi, Kwanghwan, 2022. "Parametric study of a novel air-based photovoltaic-thermal collector with a transverse triangular-shaped block," Renewable Energy, Elsevier, vol. 201(P1), pages 96-110.
    4. Madhwesh Nagaraj & Manu Krishna Reddy & Arun Kumar Honnesara Sheshadri & Kota Vasudeva Karanth, 2022. "Numerical Analysis of an Aerofoil Fin Integrated Double Pass Solar Air Heater for Thermal Performance Enhancement," Sustainability, MDPI, vol. 15(1), pages 1-22, December.
    5. Vengadesan, Elumalai & Senthil, Ramalingam, 2020. "A review on recent developments in thermal performance enhancement methods of flat plate solar air collector," Renewable and Sustainable Energy Reviews, Elsevier, vol. 134(C).
    6. Hwi-Ung Choi & Kwang-Hwan Choi, 2022. "Performance Evaluation of PVT Air Collector Coupled with a Triangular Block in Actual Climate Conditions in Korea," Energies, MDPI, vol. 15(11), pages 1-12, June.
    7. Choi, Hwi-Ung & Choi, Kwang-Hwan, 2023. "Numerical study on the performance of a solar-assisted heat pump coupled with a photovoltaic-thermal air heater," Energy, Elsevier, vol. 285(C).
    8. Byeong-Hwa An & Kwang-Hwan Choi & Hwi-Ung Choi, 2022. "Influence of Triangle-Shaped Obstacles on the Energy and Exergy Performance of an Air-Cooled Photovoltaic Thermal (PVT) Collector," Sustainability, MDPI, vol. 14(20), pages 1-19, October.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Gawande, Vipin B. & Dhoble, A.S. & Zodpe, D.B., 2014. "Effect of roughness geometries on heat transfer enhancement in solar thermal systems – A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 32(C), pages 347-378.
    2. Singh Yadav, Anil & Kumar Thapak, Manish, 2014. "Artificially roughened solar air heater: Experimental investigations," Renewable and Sustainable Energy Reviews, Elsevier, vol. 36(C), pages 370-411.
    3. Singh, Amritpal & Singh, Sukhmeet, 2017. "CFD investigation on roughness pitch variation in non-uniform cross-section transverse rib roughness on Nusselt number and friction factor characteristics of solar air heater duct," Energy, Elsevier, vol. 128(C), pages 109-127.
    4. Nidhul, Kottayat & Kumar, Sachin & Yadav, Ajay Kumar & Anish, S., 2020. "Enhanced thermo-hydraulic performance in a V-ribbed triangular duct solar air heater: CFD and exergy analysis," Energy, Elsevier, vol. 200(C).
    5. Anil Kumar & Man-Hoe Kim, 2016. "CFD Analysis on the Thermal Hydraulic Performance of an SAH Duct with Multi V-Shape Roughened Ribs," Energies, MDPI, vol. 9(6), pages 1-23, May.
    6. Varun Kumar, B. & Manikandan, G. & Rajesh Kanna, P., 2021. "Enhancement of heat transfer in SAH with polygonal and trapezoidal shape of the rib using CFD," Energy, Elsevier, vol. 234(C).
    7. Kumar, Anil & Kim, Man-Hoe, 2016. "Thermohydraulic performance of rectangular ducts with different multiple V-rib roughness shapes: A comprehensive review and comparative study," Renewable and Sustainable Energy Reviews, Elsevier, vol. 54(C), pages 635-652.
    8. Singh, Sukhmeet & Singh, Bikramjit & Hans, V.S. & Gill, R.S., 2015. "CFD (computational fluid dynamics) investigation on Nusselt number and friction factor of solar air heater duct roughened with non-uniform cross-section transverse rib," Energy, Elsevier, vol. 84(C), pages 509-517.
    9. Dezan, Daniel J. & Rocha, André D. & Ferreira, Wallace G., 2020. "Parametric sensitivity analysis and optimisation of a solar air heater with multiple rows of longitudinal vortex generators," Applied Energy, Elsevier, vol. 263(C).
    10. Nidhul, Kottayat & Yadav, Ajay Kumar & Anish, S. & Kumar, Sachin, 2021. "Critical review of ribbed solar air heater and performance evaluation of various V-rib configuration," Renewable and Sustainable Energy Reviews, Elsevier, vol. 142(C).
    11. Prasad, Jay Shankar & Datta, Aparesh & Mondal, Sirshendu, 2024. "Numerical analysis of a solar air heater with offset transverse ribs placed near the absorber plate," Renewable Energy, Elsevier, vol. 227(C).
    12. Bensaci, Charaf-Eddine & Moummi, Abdelhafid & Sanchez de la Flor, Francisco J. & Rodriguez Jara, Enrique A. & Rincon-Casado, Alejandro & Ruiz-Pardo, Alvaro, 2020. "Numerical and experimental study of the heat transfer and hydraulic performance of solar air heaters with different baffle positions," Renewable Energy, Elsevier, vol. 155(C), pages 1231-1244.
    13. Yadav, Anil Singh & Bhagoria, J.L., 2013. "A CFD (computational fluid dynamics) based heat transfer and fluid flow analysis of a solar air heater provided with circular transverse wire rib roughness on the absorber plate," Energy, Elsevier, vol. 55(C), pages 1127-1142.
    14. Jin, Dongxu & Zhang, Manman & Wang, Ping & Xu, Shasha, 2015. "Numerical investigation of heat transfer and fluid flow in a solar air heater duct with multi V-shaped ribs on the absorber plate," Energy, Elsevier, vol. 89(C), pages 178-190.
    15. Singh, Satyender & Dhiman, Prashant, 2016. "Thermal performance of double pass packed bed solar air heaters – A comprehensive review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 53(C), pages 1010-1031.
    16. Thakur, Deep Singh & Khan, Mohd. Kaleem & Pathak, Manabendra, 2017. "Performance evaluation of solar air heater with novel hyperbolic rib geometry," Renewable Energy, Elsevier, vol. 105(C), pages 786-797.
    17. Singla, Mohit & Hans, Vishavjeet Singh & Singh, Sukhmeet, 2022. "CFD analysis of rib roughened solar evacuated tube collector for air heating," Renewable Energy, Elsevier, vol. 183(C), pages 78-89.
    18. Karmveer & Naveen Kumar Gupta & Tabish Alam & Raffaello Cozzolino & Gino Bella, 2022. "A Descriptive Review to Access the Most Suitable Rib’s Configuration of Roughness for the Maximum Performance of Solar Air Heater," Energies, MDPI, vol. 15(8), pages 1-46, April.
    19. Kumar, Rajneesh & Goel, Varun, 2021. "Unconventional solar air heater with triangular flow-passage: A CFD based comparative performance assessment of different cross-sectional rib-roughnesses," Renewable Energy, Elsevier, vol. 172(C), pages 1267-1278.
    20. Saxena, Abhishek & Varun, & El-Sebaii, A.A., 2015. "A thermodynamic review of solar air heaters," Renewable and Sustainable Energy Reviews, Elsevier, vol. 43(C), pages 863-890.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:13:y:2020:i:5:p:1099-:d:327105. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.