Abstract
Solar Chimney Power Plants (SCPP) consist of three main components: solar collector, chimney and turbine. Air under the collector is heated by the greenhouse effect, the air density is reduced and the air flows toward the chimney located at the center of the collector. Thus, electricity is produced at the turbine mounted at the entrance of the chimney. In this study, measurements have been carried out on the Solar Chimney Power Plant (SCPP) system built at Adiyaman University Campus area, with specifications 15 m in height, 0.8 m in diameter of chimney, 0.004 m thick transparent glass floor and a collector having maximum of 27 m in diameter. For this purpose, air flow rate and temperature in the chimney at certain times of the day, ambient temperature, ambient wind speed, ground temperature heated by the greenhouse effect of the collector, temperature and air velocity under the collector, the number of revolutions of turbinesof different diameters and Adiyaman solar radiation values were evaluated. In this study, it has been determined that solar radiation, ambient temperature, chimney height and diameter, solar radiation absorption rate of the ground under the collector are the parameters that affect the efficiency performance of the system. It is also observed that temperature and air velocity at the point where the turbine assembly is located are maximum. In addition, it was determined that the turbine model with a diameter of 0.8 m was the most efficient model for the system. It is concluded that Solar Chimney Power Plant (SCPP) can be considered as alternative energy sources for Adiyaman.
Key Words
efficiency; solar chimney power plants; solar power; wing models
Address
Yasin İçel: Department of Electrical and Energy, TBMYO, Adiyaman University, Altinşehir Mah. 3005 Sok. No:13 02040 Adiyaman, Turkey
Abdulcelil Buğutekin: Department of Mechanical Engineering, Engineering Faculty, Adiyaman University, Altinşehir Mah. 3005 Sok. No:13 02040 Adiyaman, Turkey
Mehmet S. Mamiş: Department of Electrical and Electronics Engineering, Engineering Faculty, İnönü University, Central Campus, Elaziğ Road, 15. km 44280 Malatya, Turkey
Abstract
The usage of clean energy sources, like solar energy, has been becoming more and more important because of the scarcity of fuel reserves and the need to reduce emissions of carbon to prevent global warming. In this context, a nanofluid-based PV/T (photovoltaic thermal) system has been developed to boost solar energy utilization for a variety of residential and industrial applications. The PV/T system pumps the SiO2-nanofluid through the lowest part of the panel, decreasing the temperature of solar panel and increasing the overall amount of electricity produced. Furthermore, the heat generated through the panel can be used to raise the SiO2 nanofluid's temperature. This temperature may be utilized later to heat the building's interior or provide hot water. To evaluate the performance of the PV/T system and the existing PV system under identical weather conditions, comparative measurements were made. The results showed that the PV/T system improves the PV system in terms of power generation efficiency because it utilizes the nanofluid (SiO2) as the working fluid. Additionally, the working (SiO2) nanofluid can be utilized for heating and supply of hot water because the PV/T system raised its temperature at the outlet to about 2-2.5%. SiO2 nanofluid-based PV/T systems may, on average, significantly increase solar power utilization, more than two times that of traditional PV systems. The PV/T system is simple to install in buildings and needs minimal maintenance or repair. As a result, this technology may help to lower carbon emissions and encourage the use of renewable energy in various applications.
Key Words
PV/T system; SiO2 nanofluid; solar energy
Address
Syed Faraz Hussain Shah and Muhammad Ali Abro: Mechanical Engineering Department, Mehran University of Engineering & Technology, SZAB Campus, Khairpur Mirs' 66020, Pakistan
Waheed Ali Abro: Department of Petroleum and Gas Engineering, Dawood University of Engineering and Technology, Karachi, Pakistan
Mazhar Hussain Baloch: 1) College of Engineering A'Sharqiyah University, Ibra 400, Oman, 2) Electrical Engineering Department, Mehran University of Engineering & Technology, SZAB Campus, Khairpur Mirs
