Exergoeconomic Analysis of a Solar Photovoltaic Module in Karabük, Turkey (original) (raw)
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Energy nexus, 2023
The target of this work is to perform the exergoeconomic analysis of a solar photovoltaic-based direct evaporative air-cooling system. The system was investigated experimentally with different thicknesses of cellulose and straw pads. For inlet air rates up to 1000 m 3 /h, the maximum changes in the humidity and temperature of outlet air are achieved by a pad with a thickness of 30 cm. A comprehensive mathematical model was developed for the system and the exergoeconomic analysis of the system was carried out. The influence of the effective parameter on the performance of the system was investigated. For an inlet air with a temperature of 30°C and relative humidity of 30%, the maximum system exergy efficiency was obtained about 20%. With changes in the water temperature from 15 to 27°C, inlet air rate from 300 to 1500 m 3 /h, and inlet air temperature from 26 to 34°C, the system exergoeconomic factor changes up to 60%. The current system was compared with a conventional system and results showed that for four early years of systems lifetime, the exergoeconomic factor of the conventional system is greater than the solar system due to its lower initial investment, and for later years is lower due to its larger operating cost.
Sustainable Energy Technologies and Assessments, 2021
This paper assesses the technical and economic viability of a hybrid water-based mono-crystalline silicon (mc-Si) photovoltaic-thermal (PVT) module in comparison with a conventional mc-Si photovoltaic (PV) module installed in Ghana. Analytical models are developed to analyze the technical and economic performance of the systems over a 25-year period. The study shows that although the PVT system is more expensive to setup, it generally performs better than the conventional PV system when both systems are installed with batteries. The estimated average yearly total exergy to load from PV and PVT subsystems are respectively 159.42 kWh/m 2 and 330.15 kWh/m 2. The levelized cost of exergy (LCOEx) from the PV and PVT basic systems are US$ 0.45/kWh and US$ 0.33/kWh respectively for average peak sun hours (S h) of 4.6 h (installation site). Varying S h from 4.6 h to 6.5 h (northmost regions of Ghana) reduces the LCOEx for the PV and PVT systems by approximately 18% and 11% respectively. The PV system however becomes more economically viable than the PVT system when both systems are installed without batteries.
An energy and exergy analysis of photovoltaic system in Bantul Regency, Indonesia
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Energy and exergy analysis has been conducted on photovoltaic (PV) system in Bantul Regency, a special region of Yogyakarta, Indonesia. The PV exergy analysis was used to determine the performance of the PV system by considering environmental factors other than solar irradiance. This research aims to obtain values of exergy and energy efficiencies in the PV system. The experiment results show that the energy efficiency value produced by the PV system was 8.62–74.18%, meanwhile its exergy efficiency was 0.29%-9.40%, respectively. The value of exergy efficiency is lower than the value of energy efficiency. This result confirmed that the environmental factor greatly affects the output of the PV system. It can be concluded that high solar radiation does not always increase the production of exergy, since it is also influenced by the environmental temperature and the PV cells' temperature.
Energy And Exergy Analysis Of A Solar Photovoltaic Performance In Baghdad
Journal of Mechanical Engineering Research & Developments (JMERD), 2019
Photovoltaic modules usually generate electricity from a specific range of light frequencies and cannot cover the whole solar range of infrared, ultraviolet and diffused light. Hence, much of the striking sunlight energy is wasted by the solar modules. Thus, energy and exergy analysis were conducted to determine the performance of a solar photovoltaic module in Baghdad, Iraq. An engineering equation solver (EES) software has been using to develop the mathematical model. The environmental parameter of solar radiation, ambient temperature, and wind speed were obtained using Meteonorm software. The operating parameters of a PV module includes normal operation cell temperature, open-circuit voltage, and short-circuit current were obtain from manufacturer data sheet. The results showed that, the exergy efficiency ranged from 10.8% to 15.8 %, while the energy efficiency varies between 15.71% to 15.74 % and the exergy destruction varied from 182.8 to 352.3 W/m 2 throughout the year. It has been found that, the first law efficiency was greater than second law efficiency. The differences between the two efficiencies from January to December are (25.6%, 31.1%, 25.1%, 25.6%, 17.8%, 9.6%, 9.6%, 1.2%, 0.5%, 0.45%, 2.5%, and 14.6%) respectively. While the exergy destruction through the same 12-months are (195.4, 233.5, 304.3, 352.3, 333.8, 292.9, 309.3, 274.6, 249.8, 215.9, 187.4, and 182.8) W/m 2 .
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Energy Procedia, 2015
Thermal photovoltaic (PV/T) water based collectors are used to convert solar radiation to both thermal energy and electricity simultaneously. Along with energy analysis, exergy analysis is also useful for thermal systems such as PV/T to evaluate the "quality" of energy obtained from the system. Various types of PV/T collectors are available on the market. However, in this paper, a commercialized PV/T system is selected and exergy and economic analysis (exergoeconomics) is performed for a specific collector using known technical parameters and price for three cities in Iran with different insolation level. A MATLAB simulation program is prepared for this purpose, and it is cross validated using a former study on the same collector performed by TRNSYS and good agreement is observed. According to the results, exergy efficiency is obtained to be 9.7%, 9.6%, and 9.6% for the cities of Tabriz, Shiraz, and Esfahan respectively. An economic analysis is also performed using Net Present Value (NPV) method for the mentioned cities, and it concluded that with the specified economic parameters, the system is marginally economically feasible. This is found to be due to high capital investment costs as well as cheap available fossil fuel that is utilized widely in order to supply thermal and electrical energy demand in the studied cities.
A novel approach for estimation of photovoltaic exergy efficiency
Energy, 2012
In this study, a novel approach is proposed to determine the maximum amount of exergy from the sun when applied to a conventional photovoltaic (PV) system in order to formulate its exergy efficiency. The variations of exergy efficiency are investigated for two cases using actual experimental data obtained from an installed PV system in Turkey. A new computer program is written in the Matlab-Simulink software environment for data analysis. Subsequently, all the results are provided for the purpose of comparison. The results provided in the study are expected to be beneficial for researchers, designers and engineers working on PV energy systems and their performance assessment.
Engineering Science and Technology, an International Journal, 2019
In this study, the implementation of photovoltaic system for the evaluation of the solar energy potential of Turkey is presented in comparative. In the application phase, PV system sizing is performed for a designated area. This area consists of 5 sub-production areas and occupies 180,330 m2. The total nominal installed power of the PV system is 8865 MW. Production and financial performance of the system, provided that the equipment used in the system is the same as the operated personnel; Turkey's socio-economic development has been compared for the cities of Istanbul, Izmir and Ankara. The regions' annual solar radiation data and their respective optimal solar panel angles; The Pvsyst program was accessed using the relevant literature and GEPA data and annual production calculations were made for the specified cities of the system. The results of the production simulations, the area used (parcel) and the equipment were used to perform financial calculations. In the financial analysis part of the study, all costs incurred during the lifetime of the project were calculated. The return on investment and project Payback times were calculated for the 3 alternatives created. For the three cities, comparisons have been made for annual production and financial performance, and the results of the investments have been investigated.
Exergetic performance evaluation of a solar photovoltaic (PV) array
In this paper, an attempt is made to investigate the exergetic performance of a solar photovoltaic (PV) array. A detailed energy and exergy analysis is carried out to evaluate the electrical performance, exergy components and exergy efficiency of a typical PV array. The exergy efficiency of a PV array obtained in this paper is a function of climatic, operating and design parameters such as ambient temperature, solar radiation intensity, PV array temperature, overall heat loss coefficient, open-circuit voltage, short-circuit current, maximum power point voltage, maximum power point current, PV array area, etc. Some corrections are done on overall heat loss coefficient. A computer simulation program is also developed to estimate the electrical and operating parameters of a PV array. The results of numerical simulation are in good agreement with the experimental measurements noted in the previous literature. Finally, parametric studies have been carried out. It is observed that the behavior of exergy efficiency with respect to the variations of climatic, operating and design parameters is so similar to the electrical efficiency of PV array. Further, it is observed that PV array temperature has a great effect on the exergy efficiency and the exergy efficiency can be improved if the heat can be removed from the PV array surface. On the other hand, design parameters such as PV array area have a little effect on the exergy efficiency.
Theoretical and Real Efficiency of the Solar Power Plant in a 2-Year Cycle
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When assessing the amount of energy produced, it is necessary to consider the scope of changes in parameters of PV modules guaranteed by the manufacturer during their operation. In addition, the production of energy during the use of the PV plant is also dependent on the conversion efficiency of the generated DC voltage to sinusoidal voltage in inverters, as well as on many other factors. Based on the conducted tests, the actual amount of available solar radiation energy and its structure in particular months of the analysed years were determined. This analysis was supplemented by the characteristics of the variability of the daily amount of available solar radiation energy at the location of the PV plant in individual months. For the same period of time, calculations of the amount of energy produced in the PV power plant were made based on the indications of the AC energy meters. The structure of the actual amount of electricity produced in polycrystalline modules for individual months in a two-year cycle was also determined and the characteristics of the variability of daily electricity production in individual months were presented. The analysis shows that in a two-year research cycle, both the average daily amounts of available solar energy in a given month as well as energy yields from polycrystalline modules do not differ significantly between 2016 and 2017. However, statistically significant differences between the amount of available solar radiation energy and the amount of generated energy in PV modules in particular months were observed.