The combined effect of nanofluid and reflective mirrors on the performance of PV/thermal solar collector

Khalil, Omer Ahmed; Mohammed, Shaimaa Bawa

doi:10.2298/tsci171203092a

Cited by 22 publications

(18 citation statements)

References 34 publications

(45 reference statements)

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“…A photovoltaic (PV)/thermal collector is a combination of a solar cell and a solar thermal collector to provide the heat and electricity simultaneously . An increase in PV cell temperature reduces their efficiency, which has been studied in Jie et al, Maadi et al, and Ahmed and Bawa . Hybrid PV/T systems extract the heat from the solar cells and use them to heat air or water for different uses.…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of the new design of photovoltaic/storage solar collector

2019

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This study intends to develop a low cost, dependable, and efficient storage solar collector for household uses. This design is based on integrating solar cell technology and the solar storage collector into one system to achieve three objectives: water storage, electricity generation, and water heating. In this design, a solar cell was fixed on the inclined metal surface of a rectangular storage collector and acted as a black absorber surface. Two experimental models were constructed to study the performance of the new design. In the first design, which referred to as photovoltaic (PV)/storage solar collector, the solar cell was fixed on the inclined metal surface and worked as a black absorber surface in the conventional collector. The second model was the rectangular storage collector, similar to the first model with most attributes. The results showed that the outlet water temperature reaches the maximum value of 42°C at 2 pm for the PV/storage collector at spring day, and the temperature differences between the outlet and inlet temperature are 14.6°C and 30°C at 2 pm for the PV/storage collector and the conventional storage collector, respectively. The overall efficiency increases as a result of removing hot water from the collector to cool the solar cell and increases the electrical energy produced. Generally, under load conditions, the overall efficiency of the PV/storage collector is higher than the second design. In the summer, the highest value for the overall efficiency of the PV/storage collector was 63.02% under load condition, whereas the higher value for the overall efficiency was 40.88% without load condition.

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Section: Introductionmentioning

confidence: 99%

Performance analysis of the new design of photovoltaic/storage solar collector

2019

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“…Currently, composite materials [11], metal nanofibers [12], polymers [13] and perovskites [14] are used in the construction of panels. Application of the nanotechnology in photovoltaics should be emphasized [15], especially the various functional nanofibers due to the high geometric potential of nanofibers [16][17][18]. Modern materials are characterized by increasing efficiency, lower price and a greater durability to weather conditions which may lead to a degradation in photovoltaic system performance [19].…”

Section: Introductionmentioning

confidence: 99%

Charging electric cars as a way to increase the use of energy produced from RES

2020

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AbstractThe article contains an analysis of charging electric cars as a way to increase the use of energy produced from a photovoltaic system. A photovoltaic system is described, consisting of two micro installations, with a power output of up to 40 kWp each, supplying two sectors of the building of the Lublin Science and Technology Park. An internet platform for monitoring the operation of a photovoltaic system is presented. Next, an innovative system for monitoring, consumption and production analysis of electric energy in individual building sectors is described. A surplus of energy produced in one of the sectors was found. It was proposed that this excess energy would be used to charge electric vehicles. An analysis of the surplus power generated by the photovoltaic system in excess of the energy consumed by the building sector was used to determine the power available to the wall charger. The surplus of energy produced was used for calculations related to the amount of charging the electric vehicle required and the cost of traveling 100 km. Charging an electric car not only provides a faster return on investment in the installation, but also presents drivers with a very ecological and economical transport solution.

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“…Several types of research and studies have been carried out to develop and improve the efficiency of these electrical and thermal systems. Many researchers have studied the improvement of the performance of hybrid solar collectors used for heating water (Ahmed and Bawa, 2019). Chow (2003) studied the performance of the solar PV / T collector used to heat the water in a natural circulation system under variable conditions.…”

Section: Introductionmentioning

confidence: 99%

Optimization of PV/T Solar Water Collector based on Fuzzy Logic Control

Ahmed

Daoud

Bawa

et al. 2020

Int. J. Renew. Energy Dev.

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Hybrid solar collector (PV/T) is designed to produce electricity, hot water, or hot air at the same time as they operate solar cells and solar heaters in one system. This system is designed to increase the electrical efficiency of solar cells by absorbing heat from these cells. The fuzzy logic (FL) is a tool usually used to optimize the operation of the systems. In this paper, the FL is to monitor and correct the mainsystem parameters to remain optimization efficiency at a better level. Three affected variables were studied: Effect of reflective mirrors, the effect of the glass cover, and the effect of the lower reflector angle on the performance of the PV / T hybrid solar system. These three parameters are traveled to be inputs for the FL, and the PV temperature in addition to system efficiency is the output for it. The effect of solar radiation was found to have a great effect on the efficiency of the hybrid solar collector. The thermal efficiency was 82% for the given value of the PV and mirrors, while the efficiency down to 50 for another angle. By using the artificial intelligent the system behavior depends on its output, which called feedback close loop control, at a real-time process that optimizes the system efficiency and its output. ©2020. CBIORE-IJRED. All rights reserved

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The combined effect of nanofluid and reflective mirrors on the performance of PV/thermal solar collector

Cited by 22 publications

References 34 publications

Performance analysis of the new design of photovoltaic/storage solar collector

Performance analysis of the new design of photovoltaic/storage solar collector

Charging electric cars as a way to increase the use of energy produced from RES

Optimization of PV/T Solar Water Collector based on Fuzzy Logic Control

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