ESTIMATING THE SOLAR EXERGY POTENTIAL OF SURFACES WITH DIFFERENT TILT ANGLES

Abstract

Solar energy, which is a clean, unlimited, and environmentally friendly energy source, has critical importance in sustainable energy management. The usable potential of energy is expressed in terms of exergy, and the determination of the exergy potential of solar energy ensures the correct utilization of this potential. Turkey has a very high solar energy potential, and this potential should be utilized in the most efficient way possible to achieve sustainable energy targets. The tilt angle of solar panels has a significant effect on efficiency. Efficient operation of solar panels can be achieved by determining the optimum tilt angle. In this study, Turkey's solar exergy potential was calculated for the horizontal plane and five different tilt angles (21°, 30°, 39°, 48°, and 57°). Thus, it was tried to determine the appropriate panel angle to get the highest efficiency from solar panels that can be used in different regions of Turkey. The calculations are based on 22-year average solar energy potential data obtained from NASA. The exergy potential was determined for the coordinates where Turkey is located, and the potential for the regions between the coordinates was determined by the interpolation method. With the interpolation method used, an approximate estimation for the areas where there is no measurement is also provided, and it is aimed at saving the time and cost required for long-term measurements. Among the tilt angles analyzed, the optimum angle for the whole year was determined to be 30 degrees. The exergy potential for 30° inclined surfaces in all coordinates of Turkey is given as a seasonal map. With the use of the maps, it is thought that the optimum angle and exergy potential for different regions and seasons of Turkey will be predicted, and thus it will be easier for new investors to determine the high-potential regions of Turkey.

Keywords

• Exergy Potential
• Optimum Tilt Angle
• Solar Energy
• Solar Exergy Potential Maps

References

1. Ü. Ağbulut, G. Yıldız, H. Bakır, F. Polat, Y. Biçen, A. Ergün and A.E. Gürel, “Current practices, potentials, challenges, future opportunities, environmental and economic assumptions for Türkiye’s clean and sustainable energy policy: A comprehensive assessment,” Sustainable Energy Technologies and Assessments, vol. 56, Mar. 2023, Doi: 10.1016/j.seta.2023.103019.
2. H. N. D. Senyapar, “Renewable Energy Literature in Turkey: Mapping Analysis of the Field and Future Study Suggestions on Overlooked Issues,” International Journal of Renewable Energy Research, vol. 13, no. 1, pp. 221–235, Mar. 2023, Doi: 10.20508/ijrer. v13i1.13810.g8677.
3. S. Keleş and S. Bilgen, “Renewable energy sources in Turkey for climate change mitigation and energy sustainability,” Renewable and Sustainable Energy Reviews, vol. 16, no. 7. pp. 5199–5206, Sep. 2012. Doi: 10.1016/j.rser.2012.05.026.
4. S. Bilgen, S. Keleş, A. Kaygusuz, A. Sari, and K. Kaygusuz, “Global warming and renewable energy sources for sustainable development: A case study in Turkey,” Renewable and Sustainable Energy Reviews, vol. 12, no. 2. pp. 372–396, Feb. 2008. Doi: 10.1016/j.rser.2006.07.016.
5. M. A. Peçe, S. Ceyhan, A. Kamacı, and V. Cengiz, “The effects of renewable energy sources on Turkiye’s economic growth: ARDL estimation,” Environmental Science and Pollution Research, vol. 30, no. 15, pp. 45112–45122, Mar. 2023, doi: 10.1007/s11356-023-25479-7.
6. D. Arca and H. Keskin Çıtıroğlu, “Güneş enerjisi santral (GES) yapım yerlerinin CBS dayalı çok kriterli karar analizi ile belirlenmesi: Karabük örneği,” Journal of Geomatics, vol. 7, no. 1, pp. 17–25, Apr. 2022, doi: 10.29128/geomatik.803200.
7. G. Kum, M. E. Sönmez, and M. Karabaş, “Determination of Solar Energy Potential in Gazi̇antep Province by Analytical Hierarchy Process Method (AHP),” Journal of Geography, pp. 61–72, Dec. 2019, doi: 10.26650/jgeog2019-0031.
8. M. Demir, “Kars İlinde Güneş Enerjisi Santrali Kurulum Potansiyeli Taşıyan Alanların, CBS Analizleri ve AHP Yöntemi Kullanılarak Belirlenmesi,” Journal of Geography, vol. 0, no. 46, pp. 93–109, Jul. 2023, doi: 10.26650/jgeog2023-1168805.

9. M. C. Ungan and E. D. Göbelioğlu, “AHP-VIKOR hibrit yöntemi ile güneş enerjisi santrali yer seçimi” Sakarya Üniversitesi İşletme Enstitüsü Dergisi, vol. 5, no. 2, pp. 95–109, Dec. 2023, doi: 10.47542/sauied.1388986.
10. K. B. Varınca and M. T. Gönüllü, “Türkiye’de Güneş Enerjisi Potansiyeli ve Bu Potansiyelin Kullanım Derecesi, Yöntemi ve Yaygınlığı Üzerine Bir Araştırma,” in I. Ulusal Güneş ve Hidrojen Enerjisi Kongresi, Eskişehişr, Jun. 2006, pp. 270-275.
11. E. A. Yilmaz, “Türkiye’nin Yenilenebilir Enerji Potansiyeli ve Gelecek Hedefleri Renewable Energy Potential and Future Aims of Turkey,” Ordu Üniversitesi Sosyal Bilimler Araştırmaları Dergisi, vol. 8, no. 3, pp. 525–535, 2018, doi: 10.2018/Kabul.
12. F. Ç. Kılıç, “Solar Energy, Its Recent Status in Turkey and Productıon Technologıes,” Mühendis ve Makina, vol. 671, pp. 28–40, 2015.
13. M. Yılmaz, “The energy potential of Turkey and its importance of renewable energy sources in terms of electricity production,” Ankara Üniversitesi Çevrebilimleri Dergisi, vol. 4, no. 2, pp. 33–54, 2012.
14. G. Kaltakkıran, “Exergy Analysis of Solar Radiation Based on Measurement Data: A Study in Erzurum Province,” Journal of Studies in Advanced Technologies, vol. 1, no. 2, pp. 94–104, 2023, doi: 10.5281/zenodo.10445102.
15. A. Çelik, “Uzun Süreli Verilere Dayalı Güneş Radyasyonunun Ekserji Ve Enerji Analizi,” M. S. thesis, University of Karamanoğlu Mehmetbey, Karaman, 2021.
16. Y. Kurtgoz, E. Deniz, and I. Turker, “Solar radiation exergy and enviroeconomic analysis for Turkey,” International Journal of Exergy, vol.24 no.2, pp. 281-300, 2017.
17. J. Kaldellis and D. Zafirakis, “Experimental investigation of the optimum photovoltaic panels’ tilt angle during the summer period,” Energy, vol. 38, no. 1, pp. 305–314, 2012, doi: 10.1016/j.energy.2011.11.058.
18. W. D. Lubitz, “Effect of manual tilt adjustments on incident irradiance on fixed and tracking solar panels,” Appl Energy, vol. 88, no. 5, pp. 1710–1719, 2011, doi: 10.1016/j.apenergy.2010.11.008.
19. K. Ulgen, “Optimum tilt angle for solar collectors,” Energy Sources, Part A: Recovery, Utilization and Environmental Effects, vol. 28, no. 13, pp. 1171–1180, Sep. 2006, doi: 10.1080/00908310600584524.
20. S. Roberts and N. Guariento, Building Integrated Photovoltaics A Handbook. Berlin, Germany.: Birkhauser Press, 2009.
21. A. R. Dal, “Investigation of the Effect of Optimum Tilt Angle on Yield in Solar Energy Panels,” Bilecik Şeyh Edebali Üniversitesi Fen Bilimleri Dergisi, vol. 8, no. 1, pp. 241–250, Jun. 2021, doi: 10.35193/bseufbd.878795.
22. Anonim, “Photovoltaıc Geographıcal Informatıon System.” Accessed: Apr. 19, 2024. [Online]. Available: https://re.jrc.ec.europa.eu/pvg_download/map_index.html
23. G. Kaltakkıran and K. Bakirci, “Effect of Surface Inclines to Solar Energy Potential,” Tesisat Mühendisliği Dergisi, vol. 175, pp. 30–38, 2020, [Online]. Available: https://www.researchgate.net/publication/340351509
24. M. Y. Kaba, A. K. Seyhan, P. Celen, and A. Celen, “Energy and Exergy Analysis of Solar Collectors Having Different Tilt Angles: Case Study of Erzincan City,” Konya Journal of Engineering Sciences, vol. 10, no. 3, pp. 634–648, Sep. 2022, doi: 10.36306/konjes.1096936.
25. N. Arslanoglu, “Evaluation and establishment of diffuse solar radiation models for Bursa, Turkey,” Energy Sources, Part A: Recovery, Utilization and Environmental Effects, vol. 38, no. 18, pp. 2788–2797, Sep. 2016, doi: 10.1080/15567036.2016.1214640.
26. S. Bilgen and I. Sarikaya, “Exergy for environment, ecology and sustainable development,” Renewable and Sustainable Energy Reviews, vol. 51. Elsevier Ltd, pp. 1115–1131, Jul. 30, 2015. doi: 10.1016/j.rser.2015.07.015.
27. N. Arslanoglu, “Empirical modeling of solar radiation exergy for Turkey,” Appl Therm Eng, vol. 108, pp. 1033–1040, Sep. 2016, doi: 10.1016/j.applthermaleng.2016.08.002.
28. R. Petela, “Exergy of undiluted thermal radiation,” Solar Energy, vol. 74, no. 6, pp. 469–488, 2003, doi: 10.1016/S0038-092X (03)00226-3.
29. A. Yiğit and I. Atmaca, Güneş Enerjisi Mühendislik Uygulamları, 2. baskı. Bursa: DORA Basım-Yayın, 2018.
30. S. A. Kalogirou, Solar energy engineering: processes and systems. Elsevier, 2023.
31. G. N. Tiwari, Solar energy: fundamentals, design, modelling and applications. Alpha Science Int’l Ltd, 2002.
32. A. Yiğit and N. Arslanoğlu, “Anlık Işınım Şiddeti Ve Çevresel Faktörlere Bağlı Optimum Pv Panel Açısı, Verim, Güç Üretiminin İncelenmesi,” Uludağ University Journal of The Faculty of Engineering, pp. 301–314, Apr. 2021, doi: 10.17482/uumfd.824582.
33. M. Demircan, İ. Alan, and S. Şensoy, “Coğrafi Bilgi Sistemleri Kullanılarak Sıcaklık Haritalarının Çözünürlüğünün Artırılması,” in TMMOB Harita ve Kadastro Mühendisleri Odası 13. Türkiye Harita Bilimsel ve Teknik Kurultayı, 2011.
34. C. D. Lloyd, Local Models for Spatial Analysis, 2nd ed. CRC Press, 2010.
35. A. Juaidi, S. Abdel-Fattah, and F. Manzano-Agugliaro, “Estimating the Optimum Tilt Angles for South-Facing Surfaces in Palestine,” Energies, vol. 13, no.3, pp. 1-29, 2020, doi.org/10.3390/en13030623
36. M. A. Danandeh, “Solar irradiance estimation models and optimum tilt angle approaches: A comparative study,” Renewable and Sustainable Energy Reviews, vol.92, pp. 319-330, 2018.
37. Q. Hassan, M.K. Abbas, A.M. Abdulateef, J. Abdulateef, and A. Mohamad, “Assessment the potential solar energy with the models for optimum tilt angles of maximum solar irradiance for Iraq,” Case Studies in Chemical and Environmental Engineering, vol 4, pp. 100-140, 2021
38. S. Alqaed, J. Mustafa, F. A. Almehmadi, and B. Jamil, “Estimation of ideal tilt angle for solar-PV panel surfaces facing south: a case study for Najran City, Saudi Arabia,” Journal of Thermal Analysis and Calorimetry, vol. 148, no.16, pp. 8641-8654, 2023.