Reflective mirrors effect on the performance of the hybrid PV/thermal water collector

Ahmed, Omer K.; Bawa, Shaimaa Mohammed

doi:10.1016/j.esd.2018.02.001

Cited by 56 publications

(18 citation statements)

References 20 publications

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“…The value of electric power generated from the solar panel of the systems is obtained theoretically by using the following equation:

P_{{normalE}_{theo}} = η_{pv} I_{total} .

…”

Section: Performance Calculationmentioning

confidence: 99%

“…Finally, the total efficiency of the solar collector can be calculated from relation:

η_{tot} = \frac{P_{E} + Q_{useful}}{A_{absorber} \times I_{total}} .

…”

Section: Performance Calculationmentioning

confidence: 99%

“…In the last 20 years, many techniques have been used to cool solar cells and use the heat generated to heat water or air. 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 .…”

Section: Introductionmentioning

confidence: 99%

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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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“…The value of electric power generated from the solar panel of the systems is obtained theoretically by using the following equation:

P_{{normalE}_{theo}} = η_{pv} I_{total} .

…”

Section: Performance Calculationmentioning

confidence: 99%

“…Finally, the total efficiency of the solar collector can be calculated from relation:

η_{tot} = \frac{P_{E} + Q_{useful}}{A_{absorber} \times I_{total}} .

…”

Section: Performance Calculationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

2019

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“…The V-trough systems generally have to be used with sun tracker systems. The systems with one or two mirrors ( Figure 5) can be used with or without the sun tracker [50]. The inclination angle of the mirrors is very important to maximize the gain.…”

Section: Active Reflectancementioning

confidence: 99%

Multiconcept Methods to Enhance Photovoltaic System Efficiency

Cotfas

2019

International Journal of Photoenergy

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The main goal of this paper is to review the most important methods previously developed to enhance the efficiency and increase the lifetime of photovoltaic panels. The methods to increase the solar radiation incident on photovoltaic panels, as well as the cooling and the maximum power point tracker methods, are concisely presented in this paper. The pros and cons analysis reveals that the methods to enhance the power generated by the photovoltaic panels are strongly dependent on geographical location, climatic conditions, and the materials used. This review paper is also of interest for engineers who attempt to identify the most adequate solutions to maximize the energy output of photovoltaic systems for each location.

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“…Solar energy has become a viable option among other sources of energy for future, and many countries have spent a large amount of money to harvest solar energy . Various proposed methods have also been used, such as the use of reflective mirrors to collect sunlight and other methods of absorbing this energy or converting it into an electrical energy by solar cells for other uses . Solar energy is free, inexpensive, and directly available for consumers.…”

Section: Introductionmentioning

confidence: 99%

A state of the art review of PV‐Trombe wall system: Design and applications

Ahmed

Hamada

Salih

et al. 2019

Env Prog and Sustain Energy

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Global energy demand for the future can be met using renewable energy resources, and one of its harvesting tools is the photovoltaic (PV) technology. The combination of solar cell technology and Trombe wall is one of the most important research topics at present. PV-Trombe walls are receiving great attention because of their applications for simultaneous electricity generation and heating. In this article, a review of available literature covers different designs of a PV-Trombe wall system besides its thermal and electrical applications. The review covers in detail the influence of design and operational parameters including the glass cover, use of direct current fan, facade width, air vent, air gap thickness, thermal insulation, packing factor, coverage, heat storage, air mass flow rate, PV cell cooling, southern windows, and tilt angle of solar cell on the performance of PV-Trombe walls. Furthermore, comparison between the PV-Trombe wall system and classical Trombe wall as well as the applicability of this novel system are revealed. This review article is beneficial to engineers and researchers and can provide information for future studies.

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Reflective mirrors effect on the performance of the hybrid PV/thermal water collector

Cited by 56 publications

References 20 publications

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

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

Multiconcept Methods to Enhance Photovoltaic System Efficiency

A state of the art review of PV‐Trombe wall system: Design and applications

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