Experimental Evaluation of the Hybrid-Bifacial Cooling of a PV Panel in Arid Weather Using Channel Heat Exchanger and Impingement Flow Nozzles

Document Type : Full Lenght Research Article


Mechanical Engineering Faculty, University of Kashan, Kashan, 8731753153, Iran


In the current global energy conditions, with a growing concern for carbon emissions, the adoption of renewable energy sources is on the rise. Solar panels have emerged as a highly promising method for electrical-thermal energy generation and are widely employed in both industrial and residential settings. This study focuses on evaluating the impact of cooling on PV panel systems and its effect on electrical and thermal efficiency. A hybrid method utilizing both air and water on the PV panels is examined, and the results are compared to those of a reference panel. The experiments were conducted in Kashan, Iran, located at coordinates 34°06' N 51°23' E, in July 2023. By implementing the proposed cooling method, significant improvements in the maximum daily electrical, thermal, and total efficiencies can be achieved, surpassing 20%, 30%, and 50%, respectively. The findings indicate that cooling with water proves more advantageous in terms of thermal energy generation, although it slightly decreases the coefficient of energy due to the additional energy required for water pumping compared to air blowing. Furthermore, the study reveals that bifacial cooling, employing jets to cool both sides of the PV panel, significantly enhances thermal and electrical efficiency, particularly in hot and dry weather conditions.


Main Subjects

[1] Trinh, V. L. and Chung, C. K., 2023. Renewable energy for SDG-7 and sustainable electrical production integration industrial application and globalization. Cleaner Engineering and Technology, 15, p. 100657.
[2]   Mitra, M., Singha, N. R. and Chattopadhyay, P. K., 2023. Review on renewable energy potential and capacities of South Asian countries influencing sustainable environment: A comparative assessment. Sustainable Energy Technologies and Assessments, 57, p. 103295.
[3]   Sampaio, P. G. V. and González, M. O. A., 2017. Photovoltaic solar energy: Conceptual framework. Renewable and Sustainable Energy Reviews, 74, pp. 590-601.
[4]   Khalil, A., Khaira, A. M., Abu-Shanab, R. H. and Abdelgaied, M., 2023. A comprehensive review of advanced hybrid technologies that improvement the performance of solar dryers: Photovoltaic/thermal panels solar collectors energy storage materials biomass and desalination units. Solar Energy, 253, pp. 154-174.
[5]   Antonanzas, J., Del Amo, A., Martinez-Gracia, A., Bayod-Rujula, A. A. and Antonanzas-Torres, F., 2015. Towards the optimization of convective losses in photovoltaic–thermal panels. Solar Energy, 116, pp. 323-336.
[6]   Gu, W., Wang, X. and Bai, X., 2023. Coupled optical-electrical-thermal loss modelling and energy distributions of a photovoltaic module. Energy Conversion and Management, 276, p. 116476.
[7]   Tiwari, A. K., Chatterjee, K., Agrawal, S. and Singh, G. K., 2023. A comprehensive review of photovoltaic-thermal (PVT) technology: Performance evaluation and contemporary development. Energy Reports, 10, pp. 2655-2679.
[8]   Oh, J., Bea, S., Chae, H., Jeong, J. and Nam, Y., 2023. Photovoltaic–thermal advanced technology for real applications: Review and case study. Energy Reports, 10, pp. 1409-1433.
[9]   Sweelem, EA., Fahmy, FH., Abd-El Aziz, MM., Zacharias, P. and Mahmoudi, A., 1999. Increased efficiency in the conversion of solar energy to electric power. Energy Sources, 21(5), pp. 367–77.
[10] Krauter, S., 2004. Increased electrical yield via water flow over the front of photovoltaic panels. Solar Energy Materials and Solar Cells, 82(1–2), pp. 131–7.
[11] Fang, G., Hu, H. and Liu, X., 2010. Experimental investigation on the photovoltaic–thermal solar heat pump air conditioning system on water heating mode. Experimental Thermal and Fluid Science, 34(6), pp. 736–43.
[12] Wu, S., Zhang Xiao, Q. and Guo, F., 2011. A heat pipe photovoltaic/thermal (PV/T) hybrid system and its performance evaluation. Energy and Buildings, 43(12), pp. 3558–67.
[13] Kumar, R. and Rosen, MA., 2011. Performance evaluation of a double pass PV/T solar air heater with and with out fins. Applied Thermal Engineering, 31, pp. 1402–10.
[14] Mazón-Hernández, R., García-Cascales, JR., Vera-García, F., Káiser, AS. and Zamora, B., 2013. Improving the electrical parameters of a photovoltaic panel by means of an induced or forced air stream. International Journal of Photoenergy.
[15] Moharram, KA., Abd-Elhady, MS., Kandil, HA. and El-Sherif, H., 2013. Enhancing the performance of photovoltaic panels by water cooling. Ain Shams Engineering Journal, 4, pp. 869-77.
[16] Bahaidarah, H., Abdul, S. P. and Rehman, Gandhidasan., 2013. Performance evaluation of a PV (photovoltaic) module by back surface water cooling for hot climatic conditions. Energy, 59, pp. 445-53.
[17] Teo, HG., Lee, PS. and Hawlader, MNA., 2013. An active cooling system for photovoltaic modules. Applied Energy, 90, pp. 309-15.
[18] Nižetić, S., Čoko, D., Yadav, A. and Grubišić-Čabo, F., 2016. Water spray cooling technique applied on a photovoltaic panel. The performance response esponse. Energy Conversion and Management, 108, pp. 287-96.
[19] Noghrehabadi, A., Hajidavalloo, E. and Moravej, M., 2016. An experimental investigation of a 3-D solar conical collector performance at different flow rates. Journal of Heat and Mass Transfer Research, 1, pp. 57-66.
[20] Nahar, A., Hasanuzzaman, M. and Rahim, N., 2017. Numerical and experimental investigation on the performance of a photovoltaic thermal collector with parallel plate flow channel under different operating conditions in Malaysia. Solar Energy, 144, pp. 517–28.
[21] Wu. Ying.,  Shuang, C. and Chen, X., 2018. Heat transfer characteristics and performance evaluation of water-cooled PV/T system with cooling channel above PV panel. Renewable Energy, 125, pp. 936-46.
[22] Hassan, R., Kadhum Aboaltabooq, M. and abdulkareem jaafar, Z., 2020. Experimental and numerical study on the effect of water cooling on PV panel conversion efficiency. Materials Science and Engineering, p. 928.
[23] Chin, CS., Gao, Z., Han, M. and Zhang, C., 2020. Enhancing performance of photovoltaic panel by cold plate design with guided channels. IET Renewable Power Generation, 14(9), pp. 1606-17.
[24] Panda, S. and Malvi, C.S., 2020. Modified MPPT algorithms for various step size andswitching frequency using MATLAB/SIMULINK. Solid State Technology, 63(5), pp. 8863–8872.
[25] Khalaf, A., Eleiwi, M.A. and Yassen, M.A., 2023. Enhancing the overall performance of the hybrid solar photovoltaic collector by open water cycle jet-cooling. Renewable Energy, 208, pp. 492–503.
[26] Rejeb, O., Gaillard, L., Julien, S., Ghenai, C., Jemni, A., Bettayeb, M. and Menezo, C., 2020. Novel solar PV/Thermal collector design for the enhancement of thermal and electrical performances. Renewable Energy, 146, pp. 610–627.
[27] Meyer, EL. and Busiso, M., 2012. Comparative study of a directly cooled PV water heating system to a naturally cooled module in South Africa. Photovoltaic Specialists Conference (PVSC), 38th Institute of Electrical and Electronics Engineers, pp. 1296–9.
[28] Lin, T.H., Huang, B.J., Hung, W.C. and Sun, F.S., 2001. Performance evaluation of solar photovoltaic/thermal systems. Solar Energy, 70(5), pp. 443–448.
[29] Carmona, M., Rincon, A. and Palacio, M., 2020. Experimental comparative analysis of a flat plate solar collector with and without PCM. Solar Energy, 206, pp. 708-721.
[30] Herrando, M., Ramos, A., Zabalza, I. and Markides, C.N., 2019. A comprehensive assessment of alternative absorber-exchanger designs for hybrid PVT-water collectors. Applied Energy, 235, pp. 1583-1602.
[31] Karami, M. and Nasiri Gahraza, S., 2021. Transient Simulation and Life Cycle Cost Analysis of a Solar Polygeneration System Using Photovoltaic-Thermal Collectors and Hybrid Desalination Unit. Journal of Heat and Mass Transfer Research, 8, pp. 243- 256.
[32] Arifin, Z., Prasetyo, S.D., Tjahjana, D.D.D.P., Rachmanto, R.A., Prabowo, A.R. and Alfaiz, N.F., 2022. The application of TiO2 nanofluids in photovoltaic thermal collector systems. Energy Reports, 8, pp. 1371–1380.
[33] Diwania, S., Siddiqui, A.S., Agrawal, S. and Kumar, R., 2021. Modeling and assessment of the thermo-electrical performance of a photovoltaic-thermal (PVT) system using different nanofluids. Journal of the Brazilian Society of Mechanical Sciences, 43, p. 190.
[34] Salehi, S., Jahanbakhshi, A., Ooi, J.B., Rohani, A. and Golzarian, M.A., 2023. Study on the performance of solar cells cooled with heatsink and nanofluid added with aluminum nanoparticle. International Journal of Thermofluids, 20, p. 100445.
[35] Navakrishnan, S., Vengadesan, E., Senthil, R. and Dhanalakshmi, S., 2021. A computational study on nanofluid impingement jets in thermal management of photovoltaic panel. Renewable Energy, 189, pp. 970-982.
[36] Incropera, F.P. and Dewitt, D.P., 2001. Fundamentals of Heat and Mass Transfer. Publisher Wiley, 5th Edition.
[37] Mohammadpour, J., Salehi, F., Sheikholeslami, M. and Lee, A., 2022. A computational study on nanofluid impingement jets in thermal management of photovoltaic panel. Renewable Energy, 189, pp. 970-982.
[38] Jha, P., Das, B. and Gupta, R., 2019. An experimental study of a photovoltaic thermal air collector (PVTAC) A comparison of a flat and the wavy collector. Applied Thermal Engineering, 163, p. 114344.
[39] Huang, M., Wang, Y., Li, M., Keovisar, V., Li, X. and Kong, D., 2021. Comparative study on energy and exergy properties of solar photovoltaic/thermal air collector based on amorphous silicon cells. Applied Thermal Engineering, 185, p. 116376.
[40] Navakrishnan, S., Senthil, E., Samiappan, R. and Dhanalakshmi, S., 2021. An experimental study on simultaneous electricity and heat production from solar PV with thermal energy storage. Energy Conversion and Management, 245, p. 114614.
[41] Zhou. J., Ke, H. and Deng, X., 2018. Experimental and CFD investigation on temperature distribution of a serpentine tube type photovoltaic/thermal collector. Solar Energy, 174, pp. 735–42.
[42] Kazem, HA., Al-Waeli, AHA., Chaichan, MT., Al-Waeli, KH., Al-Aasam, AB. and Sopian, K., 2020. Evaluation and comparison of different flow configurations PVT systems in Oman: A numerical and experimental investigation. Solar Energy, 208, pp. 58–88.
[43] Jakhar, S. and Soni, MS., 2017. Experimental and theoretical analysis of glazed tube-and-sheet photovoltaic/thermal system with earth water heat exchanger cooling. Energy Conversion and Management, 153, pp. 576–88.
[44] Boumaaraf, B., Touafek, K., Ait-cheikh, MS. and Slimani, MEA., 2020. Comparison of electrical and thermal performance evaluation of a classical PV generator and a water glazed hybrid photovoltaic–thermal collector. Mathematics and Computers in Simulation, 167, pp. 176–93.
[45] Kazemian, A., Hosseinzadeh, M., Sardarabadi, M. and Passandideh-Fard, M., 2018.  Effect of glass cover and working fluid on the performance of photovoltaic thermal (PVT) system: An experimental study. Solar Energy, 173, pp. 1002–10.
[46] Omer, KA. and Zala, AM., 2018. Experimental investigation of PV/thermal collector with theoretical analysis. Renewable Energy Focus, 27, pp. 67–77.
[47] Menon, Govind S., Murali, S., Elias, J., Aniesrani Delfiya, DS., Alfiya, PV. and Samuel, Manoj P., 2022. Experimental investigations on unglazed photovoltaic-thermal (PVT) system using water and nanofluid cooling medium. Renewable Energy, 188, pp. 986-996.