Heat Transfer Performance and Pressure Drop Analysis According to Shape Conditions of Turbulent Promoters and Flow Conditions in Air-Type PV/T Collectors

Seongbhin Kim; Junyeop Kim; Byunghwa An; Youngbok Kim; Changhyo Son; Jungin Yoon; Kwanghwan Choi

doi:10.7836/kses.2022.42.1.087

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Research Article

Heat Transfer Performance and Pressure Drop Analysis According to Shape Conditions of Turbulent Promoters and Flow Conditions in Air-Type PV/T Collectors 공기식 태양광/열 집열기 내 저항체 형상조건과 유동 조건에 따른 열전달 성능 및 압력강하 분석

28 February 2022. pp. 87-101

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Abstract

Air-type photovoltaic and thermal (PV/T) has a lower thermal capacity than liquid-type one; therefore, studies are being conducted turbulence promoters to improve heat transfer in a duct. This study aims to evaluate heat transfer performance and pressure drop while changing the increasing and decreasing ratio of turbulence promoters by using computational fluid dynamics (CFD). The increasing and decreasing ratio is a concept focused on increasing the height of turbulence promoters n times from the first row to the last row to generate high air temperatures at the outlet side. As a result, the difference in heat transfer performance according to the increasing and decreasing ratio was minimal; however, it was confirmed that the pressure drop increased in the order of 1.3, 1.2, and 1.1, because the increased resistance to air flow due to increased installation height of the turbulent promoters. Accordingly, it was found that the thermohydraulic performance parameter (THPP) increased in the order of 1.1, 1.2, and 1.3. Because of the changes for various shape conditions were not taken into account, additional consideration is required to select suitable conditions.

Keywords

Air-type PV/T

Nusselt number

Friction factor

THPP

Turbulent promoter

키워드

공기식 태양광/열 집열기

누셀 수

마찰계수

열전달 성능계수

저항체

References

Moon, K. W., Choi, H. U., Kim, Y. B., Yoon, J. I., Son, C. H., and Choi, K. H., Analysis of Heat Transfer Performance According to Installation Conditions of Various Protrusions with Non-uniform Cross-section in Air Space of Air-Type PV/T System, Journal of the Korean Solar Energy Society, Vol. 41, No. 1, pp. 79-92, 2021. 10.7836/kses.2021.41.1.079

Yu, J. S., Kim, J. H., and Kim, J. T., Effect of Triangular Baffle Arrangement on Heat Transfer Enhancement of Air-Type PVT Collector, Sustainability, Vol. 12, No. 18, 7469, 2020. 10.3390/su12187469

Choi, H. U., Fatkhur, R., Kim, Y. B., Yoon, J. I., Son, C. H., and Choi, K. H., CFD analysis on the heat transfer performance with various obstacles in air channel of air-type PV/Thermal module, Journal of the Korean Solar Energy Society, Vol. 38, No. 1, pp. 33-43, 2018. 10.7836/kses.2018.38.2.033

Choi, H. U. and Choi, K. H., Performance Evaluation of PV/T Air Collector Having a Single-Pass Double-Flow Air Channel and Non-Uniform Cross-Section Transverse Rib, Energies, Vol. 13, No. 9, 2203, 2020. 10.3390/en13092203

Yu, J. S., Lee, K. S., Kim, J. H., and Kim, J. T., Study on Electrical and Thermal Performance Assessment of an Air-Type PVT Collector with Perforated Baffle, Journal of the Korean Solar Energy Society, Vol. 41, No. 1, pp. 25-34, 2021. 10.7836/kses.2021.41.1.025

Kim, S. M., Kim, J. H., and Kim, J. T., An Experimental Study on Thermal and Electrical Performance of an Air-type PVT Collector, Journal of the Korean Solar Energy Society, Vol. 39, No. 2, pp. 23-32, 2019. 10.7836/kses.2019.39.2.023

Delisle, V., Kim, J. T., Kim, J. H., Gagne, A., and Ayoub, J., Performance Assessment of a New Air-based Building-integrated Photovoltaic Thermal Solar Collector, 33^rd European Photovoltaic Solar Energy Conference and Exhibition, pp. 2590-2595, 2017.

Jha, P., Das, B., and Gupta, R., An Experimental Study of a Photovoltaic Thermal Air Collector (PVTAG): A Comparison of a Flat and the Wavy Collector, Applied Thermal Engineering, Vol. 163, pp. 1-13, 2019. 10.1016/j.applthermaleng.2019.114344

Othman, M. Y., Yatim, B., Sopian, K., and Abu Bakar, M. N., Performance studies on a finned double-pass photovoltaic-thermal (PV/T) solar collector. Desalination, Vol. 209, pp. 43-49, 2007. 10.1016/j.desal.2007.04.007

Kumar, R. and Rosen, M. A., Performance evaluation of a double pass PV/T solar air heater with and without fins. Appl. Therm. Eng, Vol. 31, pp. 1402-1410, 2011. 10.1016/j.applthermaleng.2010.12.037

Anil Singh Yadav, J. L., and Bhagoria, 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, Vol. 55, pp. 1127-1142, 2013. 10.1016/j.energy.2013.03.066

Anil Singh Yadav, J. L., and Bhagoria, A., CFD based Thermo-hydraulic Performance Analysis of an Artificially Roughened Solar Air Heater Having Equilateral Triangular Sectioned Rib Roughness on the Absorber Plate, International Journal of Heat and Mass Transfer, Vol. 70, pp. 1016-1039, 2014. 10.1016/j.ijheatmasstransfer.2013.11.074

ASHRAE Standard 93, Method of Testing to Determine the Thermal Performance of Solar Collectors, GA:American Society of Heat, Refrigeration and Air Conditioning Engineers, 2003.

ANSYS Fluent, Version 17.2, ANSYS Inc, 2016.

Singh, S., Singh, B., Hans, V. S., and Gill, R. S., 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, Vol. 84, pp. 509-517, 2015. 10.1016/j.energy.2015.03.015

Kumar, B. V., Manikandan, G., Kanna, P. R., Taler, D., Taler, J., Oclon, M. N., Mzyk, K., and Toh, H. T., A Performance Evaluation of a Solar Air Heater Using Different Shaped Ribs Mounted on the Absorber Plate-A Review, Energies, Vol. 11, 3104, 2018. 10.3390/en11113104

Choi, H. U. and Choi, K. H., CFD Analysis on the Heat Transfer and Fluid Flow of Solar Air Heater having Transverse Triangular Block at the Bottom of Air Duct, Energies, Vol. 13, No. 5, 1099, 2020. 10.3390/en13051099

Ansys Inc., ANSYS Fluent 12.0 User’s Guide; Fluent Inc.: Lebanon, NH, USA, 2009.

Webb, R. L. and Gee, D. L., Forced Convection Heat Transfer in Helically Rib-roughened Tubes, International Journal of Heat and Mass Transfer, Vol. 23, pp. 1127-1136, 1980. 10.1016/0017-9310(80)90177-5

Information

Publisher :Korean Solar Energy Society
Publisher(Ko) :한국태양에너지학회
Journal Title :Journal of the Korean Solar Energy Society
Journal Title(Ko) :한국태양에너지학회 논문집
Volume : 42
No :1
Pages :87-101
Received Date : 2021-11-01
Revised Date : 2021-11-15
Accepted Date : 2021-12-06
DOI :https://doi.org/10.7836/kses.2022.42.1.087

Journal of the Korean Solar Energy Society ISSN:1598-6411(Print) 2508-3562(Online) 한국태양에너지학회 논문집

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