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Annual performance of photovoltaic-thermal system under actual operating condition of Dire Dawa in Ethiopia

School of Mechanical and Industrial Engineering, Institute of Technology, Addis Ababa University, Addis Ababa, Ethiopia

Special Issues: Solar Photovoltaic System Engineering

As cooling of Photovoltaic panel by water improves the electrical conversion efficiency and produces warm water as a by-product, photovoltaic thermal system is being used for cogeneration of electrical energy and hot water. In this study, the annual performance of a glazed photovoltaic thermal system (combination of PV module and solar flat plate collector) with storage tank was investigated by the dynamic computational model. The model was developed using MATLAB under actual hot water demand condition for co-generation electrical energy at Dire Dawa in Ethiopia. The computational model determines the electrical energy production and temperature of water at different points and other components of the PV-T system within a given time interval. In addition summaries of monthly and annual incident solar irradiance, electrical energy generation, thermal energy transported to storage and thermal energy supplied as hot water to end users are computed, considering the hourly hot water consumption pattern and storage size effect. The simulation, which is conducted for 20 m2 PV-T system, consists of 12 panels with each 1.64 m2 module areas resulted in generation 803 kWh/year thermal energy and 310 kWh/year electrical energy. The annual average electrical efficiency, thermal efficiency, hot water end use overall efficiency and co-generation (PV-T) efficiency of the system were 15.4%, 50.4%, 38%, and 65.8% respectively. The fraction of solar energy in meeting the heating load for hot water generation was 44.5% for 60℃ hot water supply temperature. Hence, that PV-T system can only be used for water preheating meeting at maximum half of the heating load in tropical area.
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Keywords photovoltaic thermal system; dynamic simulation; annual performance

Citation: Alemayehu T. Eneyaw, Demiss A. Amibe. Annual performance of photovoltaic-thermal system under actual operating condition of Dire Dawa in Ethiopia. AIMS Energy, 2019, 7(5): 539-556. doi: 10.3934/energy.2019.5.539


  • 1. Messenger RA, Ventre J (2005) Photovoltaic Engineering Systems. Second edition Taylor & Francis e-Library.
  • 2. Bekele A, Alemu D, Mishra M (2011) Large-scale solar water heating systems analysis in Ethiopia: A case study. Int J Sustainable Energy 32: 1–22.
  • 3. Zondag HA (2008) Flat-plate PV-Thermal collectors and systems: A review. Renewable Sustainable Energy Rev 12: 891–959.    
  • 4. Sardarabadi M, Fard MP, Sardarabadi H, et al. (2012) Computer modelling and experimental validation of a photovoltaic thermal (PV/T) water based collector system. 2nd International Conference on Power and Energy Systems (ICPES2012) 56: 75–79.
  • 5. Abdelrazik AS, Al-sulaiman FA, Saidur R, et al. (2018) A review on recent development for the design and packaging of hybrid photovoltaic/thermal (PV/T) solar systems design of PV. Renewable Sustainable Energy Rev 95: 110–129.    
  • 6. Kazemian A, Hosseinzadeh M, Sardarabadi M, et al. (2018) Effect of glass cover and working fluid on the performance of photovoltaic thermal (PVT) system: An experimental study. Solar Energy 173: 1002–1010.    
  • 7. Marc-Alain Mutombo N, Inambao F, Bright G (2016) Performance analysis of thermosyphon hybrid photovoltaic thermal collector. J Energy South Afr, 27: 28–38.
  • 8. Kalogirou SA (2001) Use of TRNSYS for modelling and simulation of a hybrid pv-thermal solar system for Cyprus. Renewable Energy 23: 247–260.    
  • 9. Yalçin L, Öztürk R (2013) Performance comparison of c-Si, mc-Si and a-Si thin film PV by PVsyst simulation. J Optoelectron Adv Mater 15: 326–334.
  • 10. Chow TT (2010) A review on photovoltaic/thermal hybrid solar technology. Appl Energy 87: 365–379.    
  • 11. Chow TT (2003) Performance analysis of photovoltaic-thermal collector by explicit dynamic model. Sol Energy 75: 143–152.    
  • 12. Huang CY, Huang CJ (2014) A study of photovoltaic thermal (PV/T) hybrid system with computer modeling. Int J Smart Grid Clean Energy 3: 75–79.    
  • 13. Pauly L, Rekha L, Vazhappilly CV, et al. (2016) Numerical simulation for solar hybrid photovoltaic thermal air collector. Procedia Technol 24: 513–522.    
  • 14. Bhattarai S, Oh JH, Euh SH, et al. (2012) Simulation and model validation of sheet and tube type photovoltaic thermal solar system and conventional solar collecting system in transient states. Sol Energy Mater Sol Cells 103: 184–193.    
  • 15. Sultan SM, Efzan MNE (2018) Review on recent photovoltaic/thermal (PV/T) technology advances and applications. Sol Energy 173: 939–954.    
  • 16. Du B, Hu E, Kolhe M (2012) Performance analysis of water cooled concentrated photovoltaic (CPV) system. Renewable Sustainable Energy Rev 16: 6732–6736.    
  • 17. Kolhe M, Bin D, Hu E (2012) Water cooled concentrated photovoltaic system. Int J Smart Grid Clean Energy 2–6.
  • 18. Daneshazarian R, Cuce E, Cuce PM, et al. (2018) Concentrating photovoltaic thermal (CPVT) collectors and systems: Theory, performance assessment and applications.Renewable Sustainable Energy Rev 81: 473–492.    
  • 19. Duffie JA, Beckman WA, Worek WM (2003) Solar Engineering of Thermal Processes, 4nd Eds, 116.
  • 20. Chow TT, He W, Ji J, et al. (2007) Performance evaluation of photovoltaic–thermosyphon system for subtropical climate application. Sol Energy 81: 123–130.    
  • 21. Ammar MB, Chaabene M (2009) A dynamic model of hybrid photovoltaic/thermal panel. Int Renewable Energy Congress 19–24.
  • 22. Guarracino I, Mellor A, Ekins-daukes NJ, et al. (2016) Dynamic coupled thermal-and-electrical modelling of sheet-and-tube hybrid photovoltaic/thermal (PVT) collectors. Appl Therm Eng 101: 778–795.    
  • 23. Hossain MS, Pandey AK, Selvaraj J, et al. (2019) Thermal performance analysis of parallel serpentine flow based photovoltaic/thermal (PV/T) system under composite climate of Malaysia. Appl Therm Eng 153: 861–871.    
  • 24. Baxter R, Hastings N, Law A, et al. (2008) Fundamentals of heat and mass transfer. 39.
  • 25. Al-Waeli AHA, Sopian K, Kazem HA, et al. (2017) Photovoltaic/Thermal (PV/T) systems: Status and future prospects. Renewable Sustainable Energy Rev 77: 109–130.    
  • 26. Sultan SM, Fadhel MI, Alkaff SA (2014) Performance analysis of the photovoltaic/thermal collector (PV/T) system for different Malaysian climatic conditions. Appl Mech Mater 467: 522–527.
  • 27. Hocine HBC, Touafek K, Kerrour F, et al. (2015) Model validation of an empirical photovoltaic thermal (PV/T) collector. Energy Procedia 74: 1090–1099.    
  • 28. Bilbao JI, Sproul AB (2015) ScienceDirect detailed PVT-water model for transient analysis using RC networks. Sol Energy 115: 680–693.    
  • 29. Dupeyrat P, Ménézo C, Fortuin S (2014) Study of the thermal and electrical performances of PVT solar hot water system. Energy Build 68: 751–755.    


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