University of Tehran Journal of Solar Energy Research 2588-3097 9 3 2024 07 01 The Airflow Energy Modelling In A Spiral Absorber In Static And Dynamic Situations 1994 2009 98992 10.22059/jser.2024.367968.1356 EN Sepehr Yousefbeigi Department of Energy, Materials and Energy Research Center, Karaj, Iran. 0000-0003-4457-6055 Hossein Ghadamian Department of Energy, Materials and Energy Research Center (MERC), P.O. Box: 14155-4777, Tehran, Iran Saeed Rahgozar Department of Energy, Materials and Energy Research Center, Karaj, Iran. 0000-0003-4457-6055 Elias Toozandeh a Department of Energy, Materials and Energy Research Center, Karaj, Iran. 0000-0002-5427-2664 Journal Article 2023 11 25 The absorption of sunlight causes solar panels to heat up, and the resulting temperature plays a crucial role in determining the amount of output voltage. In this study, a novel spiral geometry was developed behind the Tedlar layer of photovoltaic panels (PVs) to regulate the dissipation of heat by air. Dynamic and static numerical modelling was conducted using open-source MATLAB software. The first step involved determining and simultaneously solving mathematical equations to obtain the desired geometry. A comparison of static modelling revealed that in identical environmental conditions, the electrical efficiency of the system (temperature of the cell) was approximately 7.5% and 10% (58 ºC and 53 ºC), without and with the use of a heat absorber, respectively. In the subsequent phase, a variable speed fan with a maximum power of 2 watts was employed behind the panel to cool the system. Dynamic modelling showed that the system efficiency and cell temperature were 7.4% and 58.5 ºC, respectively. By using a spiral thermal absorber, under similar environmental conditions, the cell temperature decreased to 54 ºC, and the system efficiency was improved to 9.2%. According to dynamic modelling, a reduction of 8% in panel temperature could be achieved. https://jser.ut.ac.ir/article_98992_483e968a8be73f8c2aaa285f32c5ed75.pdf