چكيده به لاتين
Energy is one of the requirements of human life. The industry and technology growth and also the population increase is causing a boost in energy consumption. Due to the limited fossil resources and the related problems, turning to clean and renewable energy is inevitable. In this work, the performance of a solar system, in more detail, the thermal photovoltaic system is investigated. Numerical study has been done through coding in MATLAB software and by simultaneously solving equations related to the electrical and thermal parts, which provides the possibility of performing various investigation on the system. It is noteworthy that pv part of this code, which is completely accurate, can also use independently for photovoltaic system. Experimental test was performed in the solar laboratory of the Petroleum Industry Research Institute. efficiency tests were performed at different temperatures to measure collector performance. Numerical study has three parts: parametric study, collector performance in one day and in one year. By increasing the mass flow rate from 0.05 to 0.005 kg/s, the thermal and overall efficiency increased by about 2%, but no significant change was seen in the electrical efficiency. As the wind speed increases from zero to 10 meters per second, the electrical efficiency increases by about 2%, the thermal efficiency decreases by about 20%, and the overall efficiency of the system decreases by 18%; Therefore, there is a possibility of drastic changes in the performance of the system with changes in wind speed. By increasing the amount of radiation from 340 to 1040 w/m^2, the electrical, thermal and overall efficiency shows a 1% decrease, 16% increase and 13% increase, respectively. Assuming an increase in the ambient temperature from 5 to 60 degrees Celsius, the electrical efficiency decreases by 2.5%, the thermal efficiency increases by 0.5% and the overall efficiency decreases by 2%. The experimental investigation shows that in four points with a temperature of 20 to 60 degrees Celsius, the efficiency has decreased from about 25% to 10%. Numerical and experimental results are in good agreement. The separate numerical solution of the electrical part from thermal part along with the experimental study in this research is one of the strong points that is observed in few studies.
