Analysis of exergy efficiency for a grid connected PV power plant via different solar exergy models in Samsun, Turkey

Document Type : Research Note


1 Department of Physics, Ondokuz Mayis University, 55139, Samsun, Turkey

2 Civil Aviation College, Samsun University, 55420, Samsun, Turkey


In this study, power conversion efficiency and the analysis of exergy of a grid-connected photovoltaic (PV) power plant was done by comparing solar exergy models for 12 months. Statistical analysis was used to evaluate the PV exergy efficiency related to solar exergy models. First, solar exergy models proposed by Petela, Spanner and Parrott and the mean of solar exergy-to-solar radiation energy ratio were calculated, and the PV exergy efficiency was analyzed. The results indicate that the average solar exergy-to-solar radiation energy ratio for the Samsun region was 0.93 which are related to Petela and Spanner's model. The ratio for Parrott's model was calculated as 0.99. The results confirm that the power conversion efficiency is in the range of 6.15-8.87%. While PV exergy efficiency related to Parrott's model is seen to vary between 4.85% and 7.09% during 12 months, but in Petela's and Spanner's model it changes from 5.19% to 7.60%.


1. Hepbasli, A. "A key review on exergetic analysis and assessment of renewable energy resources for a sustainable future", Renewable and Sustainable Energy Reviews, 12(3), pp. 593-661 (2008).
2. Mustafa, R.J., Gomaa, M.R., Al-Dhaifallah, M., et al. "Environmental impacts on the performance of solar photovoltaic systems", Sustainability, 12(2), p. 608 (2020).
3. Dincer, I. and Rosen, M.A. "Thermodynamic aspects of renewables and sustainable development", Renewable and Sustainable Energy Reviews, 9(2), pp. 169- 189 (2005).
4. Dincer, I. "The role of exergy in energy policymaking", Energy Policy, 30(2), pp. 137-149 (2002).
5. Agudelo, A. and Cortes, C. "Thermal radiation and the second law", Energy, 35(2), pp. 679-691 (2010).
6. Lior, N. and Zhang, N. "Energy, exergy, and second law performance criteria", Energy, 32(4), pp. 281-296 (2007).
7. Koroneos, C., Spachos, T., and Moussiopoulos, N. "Exergy analysis of renewable energy sources", Renewable Energy, 28(2), pp. 295-310 (2003).
8. Dewulf, J., Van Langenhove, H., Muys, B., et al. "Exergy: its potential and limitations in environmental science and technology", Environmental Science & Technology, 42(7), pp. 2221-2232 (2008).
9. Rosen, M.A., Dincer, I., and Kanoglu, M. "Role of exergy in increasing efficiency and sustainability and reducing environmental impact", Energy Policy, 36(1), pp. 128-137 (2008).
10. Gupta, M.K., Kaushik, S.C., Ranjan, K.R., et al. "Thermodynamic performance evaluation of solar and other thermal power generation systems: A review", Renewable and Sustainable Energy Reviews, 50, pp. 567-582 (2015).
11. Bilgen, S. and Sarikaya, I. "Exergy for the environment, ecology and sustainable development", Renewable and Sustainable Energy Reviews, 51, pp. 1115- 1131 (2015).
12. Abid, M. and Hepbasli, A. "Dynamic exergetic analysis and evaluation of photovoltaic modules", Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 37(21), pp. 2271-2284 (2015).
13. Press, W.H. "The theoretical maximum for energy from direct and diffuse sunlight", Nature, 264(5588), pp. 734-735 (1976).
14. Rawat, R., Lamba, R., and Kaushik, S.C. "Thermodynamic study of solar photovoltaic energy conversion: An overview", Renewable and Sustainable Energy Reviews, 71, pp. 630-638 (2017).
15. Taki, M., Rohani, A., Yildizhan, H., et al. "Energyexergy modeling of solar radiation with most influencing input parameters", Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 41(17), pp. 2128-2144 (2019).
16. Petela, R. "Exergy of heat radiation", Heat Trnsfer, 86(11), pp. 187-192 (1964).
17. Spanner, D.C., Introduction to Thermodynamics, Academic Press, London (1964).
18. Parrott, J.E. "A theoretical upper limit to the conversion efficiency of solar energy", Solar Energy, 21(3), pp. 227-229 (1978).
19. Jeter, S.M. "Maximum conversion efficiency for the utilization of direct solar radiation", Solar Energy, 26(3), pp. 231-236 (1981).
20. Bejan, A. "Unification of three different theories concerning the ideal conversion of enclosed radiation", pp. 46-51 (1987).
21. Alta, D., Ertekin, C., and Evrendilek, F. "Quantifying spatio-temporal dynamics of solar radiation exergy over Turke", Energy, 35(12), pp. 2821-2828 (2010).
22. Hepbasli, A. and Alsuhaibani, Z. "Estimating and comparing the exergetic solar radiation values of various climate regions for solar energy utilization", Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 36(7), pp. 764-773 (2014).
23. Jamil, B. and Bellos, E. "Development of empirical models for estimation of global solar radiation exergy in India", Journal of Cleaner Production, 207, pp. 1- 16 (2019).
24. Khorasanizadeh, H. and Sepehrnia, M. "Solar exergy evaluation and empirical model establishment; case study: Iran", Heliyon, 6(12), e05638 (2020).
25. Sahin, A.D., Dincer, I., and Rosen, M.A. "Thermodynamic analysis of solar photovoltaic cell systems", Solar Energy Materials and Solar Cells, 91(2-3), pp. 153-159 (2007).
26. Akyuz, E., Coskun, C., Oktay, Z.U.H.A.L., and Dincer, I. "A novel approach for estimation of photovoltaic exergy efficiency", Energy, 44(1), pp. 1059- 1066 (2012).
27. Bayrak, F., Erturk, G., and Oztop, H.F. "Effects of partial shading on energy and exergy efficiencies for photovoltaic panels", Journal of Cleaner Production, 164, pp. 58-69 (2017).
28. Bayrak, F., Oztop, H.F., and Selimefendigil, F. "Effects of different fin parameters on temperature and efficiency for cooling of photovoltaic panels under natural convection", Solar Energy, 188, pp. 484-494 (2019).
29. Bayrak, F. and Oztop, H.F. "Effects of static and dynamic shading on thermodynamic and electrical performance for photovoltaic panels", Applied Thermal Engineering, 169, 114900 (2020).
30. Sopian, K., Alwaeli, A.H., Al-Shamani, A.N., and Elbreki, A.M. "Thermodynamic analysis of new concepts for enhancing cooling of PV panels for gridconnected PV systems", Journal of Thermal Analysis and Calorimetry, 136(1), pp. 147-157 (2019).
31. Kumar, N.M., Subramaniam, U., Mathew, M., Ajitha, A., and Almakhles, D.J. "Exergy analysis of thin- film solar PV module in ground-mount,  floating and submerged installation methods", Case Studies in Thermal Engineering, 21, 100686 (2020).
32. Kallio, S. and Siroux, M. "Energy analysis and exergy optimization of photovoltaic-thermal collector", Energies, 13(19), 5106 (2020).
33. Kim, J.H., Yu, J.S., and Kim, J.T. "An experimental study on the energy and exergy performance of an airtype PVT collector with perforated baffle", Energies, 14(10), p. 2919 (2021).
34. Miskat, M.I. and Rashedi, A. "Exergy efficiency and enviroeconomic analysis of solar photovoltaic power in Nepal", Energy Technology, 9(8), 2100093 (2021).
35. Hasan, K., Yousuf, S.B., Tushar, M.S.H.K., et al. "Effects of different environmental and operational factors on the PV performance: A comprehensive review", Energy Science and Engineering, 10(2), pp. 656-675 (2022).
36. Manjunath, C., Reddy, J., Reddy, K.S.R., et al. "Energy, exergy performance and analysis of 50 W solar photovoltaic module", Materials Today: Proceedings, 54, pp. 531-536 (2022).