The Influence of Al2O3- ZnO-H2O Nanofluid on the Thermodynamic Performance of Photovoltaic- Thermal Hybrid Solar Collector System

Younis, Abubaker; Onsa, Mahmoud Hassan; Alhorr, Yousef; Elsarrag, Esam

doi:10.4172/2576-1463.1000187

Cited by 31 publications

(7 citation statements)

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“…The use of nanofluids in modern PVT systems has become increasingly common because of their desirable characteristics, such as enhanced thermal conductivity and light absorption [132]. Research has demonstrated that employing nanofluids as coolant media in the thermal absorbers of PVT systems significantly improves performance by managing the high temperatures of solar cells [133][134][135]. The various types of nanofluids can be seen in Figure 12 [136].…”

Section: Nanofluidsmentioning

confidence: 99%

A Review of Heat Dissipation and Absorption Technologies for Enhancing Performance in Photovoltaic–Thermal Systems

Kurniawati,

Sung

2024

Energies

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With the growing demand for photovoltaic (PV) systems as a source of energy generation that produces no greenhouse gas emissions, effective strategies are needed to address the inherent inefficiencies of PV systems. These systems typically absorb only approximately 15% of solar energy and experience performance degradation due to temperature increases during operation. To address these issues, PV–thermal (PVT) technology, which combines PV with a thermal absorber to dissipate excess heat and convert it into additional thermal energy, is being rapidly developed. This review presents an overview of various PVT technologies designed to prevent overheating in operational systems and to enhance heat transfer from the solar cells to the absorber. The methods explored include innovative absorber designs that focus on increasing the heat transfer contact surface, using mini/microchannels for improved heat transfer contiguity, and substituting traditional metal materials with polymers to reduce construction costs while utilizing polymer flexibility. The review also discusses incorporating phase change materials for latent heat absorption and using nanofluids as coolant mediums, which offer higher thermal conductivity than pure water. This review highlights significant observations and challenges associated with absorber design, mini/microchannels, polymer materials, phase change materials, and nanofluids in terms of PV waste heat dissipation. It includes a summary of relevant numerical and experimental studies to facilitate comparisons of each development approach.

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Section: Nanofluidsmentioning

confidence: 99%

A Review of Heat Dissipation and Absorption Technologies for Enhancing Performance in Photovoltaic–Thermal Systems

Kurniawati,

Sung

2024

Energies

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“…nanofluid is more effective than high-temperature water. Younis et al [117] conducted thermodynamic analyzes to improve the thermal, electrical and exergy efficiency of the solar photovoltaic / thermal (PV / T) hybrid collector system. The two liquids examined were water, and Al2O3-ZnO-H2O was mixed with Ethylene Glycol as a nanofluidic surfactant.…”

Section: Nanofluid Applications In Different Types Of Solar Collectorsmentioning

confidence: 99%

Güneş Kolektörlerinde Nanoakışkanların Kullanılmasının Etkileri

Ünvar

Menlik

2021

Politeknik Dergisi

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The importance of using solar energy, one of the renewable energy sources, has started to be understood more recently. The negative environmental effects and limited amounts of fossil fuels have led to increased demand for renewable energy sources worldwide and the production of various models and devices has accelerated to take advantage of solar energy, which is the basis of all energy sources. Using solar collectors as a way to benefit from solar energy has been used for many years. Although solar collectors are generally divided into 4 types as flat plate (FPSC), evacuated tube (ETSC), parabolic (PSC) and heat pipe (HPSC), these types can also be divided into separate types with many different features. The most commonly used solar collector type in the world is Flat Plate Solar Collector. The most important reasons for this are being cheap, easily produced and applied in various ways. Yet, the thermal productivity of FPSCs decreases below 40% in non-ideal climate conditions with low surrounding temperature. The existence of such disadvantages of FPSCs led to the production of Evacuated Tube Solar Collectors. With the advancing technology, the utilization of heat pipes in collectors has come to the agenda and as a result of the studies conducted, it has been determined that the use of heat pipe improves efficiency. In addition, the use of nanofluids in solar collectors and heat pipes has become quite common, and many studies have been carried out especially on this subject recently. The primary objective is always to improve the performance of the system and achieve efficiency. In this way, solar energy will be used in the most effective way and world energy supply demand will be met by using renewable resources.

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“…1). In recent years, the number of research on intensifying heat transfer in solar collectors using nanofl uid coolants has increased signifi cantly (Farhana et al, 2019;Goel et al, 2020;Olia et al, 2019;Younis et al, 2018;Zayed et al, 2019). Popular heat transfer agents, providing heat exchange, are liquids based on ethylene glycol or propylene glycol.…”

Section: Introductionmentioning

confidence: 99%

Intensification of Heat Transfer in Hybrid Solar Collectors by Using Nanofluids as a Coolant

Kassymov,

Adylkanova,

Bektemissov

et al. 2023

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The Influence of Al2O3- ZnO-H2O Nanofluid on the Thermodynamic Performance of Photovoltaic- Thermal Hybrid Solar Collector System

Cited by 31 publications

References 0 publications

A Review of Heat Dissipation and Absorption Technologies for Enhancing Performance in Photovoltaic–Thermal Systems

A Review of Heat Dissipation and Absorption Technologies for Enhancing Performance in Photovoltaic–Thermal Systems

Güneş Kolektörlerinde Nanoakışkanların Kullanılmasının Etkileri

Intensification of Heat Transfer in Hybrid Solar Collectors by Using Nanofluids as a Coolant

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