Electrical and thermal efficiency of air-based photovoltaic thermal (PVT) systems: an overview

Rukman, Nurul Shahirah Binti; Fudholi, Ahmad; Taslim, Ivan; Indrianti, Merita Ayu; Manyoe, Intan Noviantari; Elisma, Elisma; Sopian, Kamaruzzaman

doi:10.11591/ijeecs.v14.i3.pp1134-1140

Cited by 12 publications

(4 citation statements)

References 24 publications

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“…The tube heat exchanger with optimal design is the most commonly used form of heat exchanger for heat transmission [23], [24], In this experiment; heat sinks were integrated on the solar panel rear side to transfer exces heat energy from the higher temperature the lower temperature. In addition to this, and because the energy efficiency of the solar panel can be boosted if an incompressible fluid (oil, water.. for example) is used in this PV-T system [25], we integrate a copper pipe that contains cooled water in a closed circuit. The copper pipe was attached with heat sinks, and a pump circulate cooled water in this circuit from a storage tank to the pipe.…”

Section: Methodsmentioning

confidence: 99%

An experimental study of PV/T system using parabolic reflectors and heat exchanger

Ismail¹,

Mohammed²,

Abdelkhalek³

et al. 2021

IJEECS

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<p>Photovoltaic (PV) systems can be made more efficient by forcing the PV panel to operate at its maximum point power due to the electrical properties of photovoltaic generators, which are substantially non-linear (MPP). This study examines the effectiveness of using a combination of parabolic concentrator Bi-reflector and heat exchanger as a cooling system on the performance of photovoltaic generators to get a photovoltaic/thermal (PV/T) system, and their effect on the direct current (DCDC) converter using matrix laboratory (MATLAB) simulink. The experimental tests were carried out under various temperature values and sun irradiation. The results demonstrated that the use of parabolic Bi-reflectors, to further illumine te the panels, and the use of the cooling system to absorb excess heat to get heat water, could increase and enhances performances of the photovoltaic generator.</p>

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Section: Methodsmentioning

confidence: 99%

An experimental study of PV/T system using parabolic reflectors and heat exchanger

Ismail¹,

Mohammed²,

Abdelkhalek³

et al. 2021

IJEECS

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“…The cooling system uses fluid to realize the thermal energy transfer between PV panels and pipes while promoting heat dissipation and improving electric conversion efficiency 6 . The typical media include air 7 , 8 , water 9 , 10 and nanofluids 11 – 13 . Water or air-based PV/T cooling systems offer low costs and allow for balanced energy distribution.…”

Section: Introductionmentioning

confidence: 99%

Numerical study on solar photovoltaic/thermal system with tesla valve

Du,

Zou,

Zheng

et al. 2024

Sci Rep

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In recent years, photovoltaic/thermal (PV/T) systems have played a crucial role in reducing energy consumption and environmental degradation, nonetheless, the low energy conversion efficiency presents a considerable obstacle for PV/T systems. Therefore, improving heat conversion efficiency is essential to enhance energy efficiency. In this paper, the PV/T system with the Tesla valve is proposed to solve this problem. Firstly, the cooling effect is simulated and analyzed in the system with four different flow channel structures: semicircle, rectangle, triangle and Tesla valve. The results indicate that the system with the Tesla valve exhibits superior cooling performance. Subsequently, several factors including angle, valve number, valve type, and pipe diameter ratio for the Tesla valve are further studied through numerical and simulation analysis. The results reveal that Tesla valves demonstrate optimal cooling performance when possessing the following structural parameters: complete symmetry, more valves, a 30-degree angle and a pipe diameter ratio of 1. Finally, four different types of fluid are selected to explore the Tesla valve. The conclusion shows that nanofluids with high density, low specific heat, and high thermal conductivity also improve the cooling performance. Thus, the PV/T system with the Tesla valve exhibits good heat dissipation and energy storage efficiency, electrical efficiency can reach 16.32% and thermal efficiency reach 59.65%.

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“…These parts of Africa very seldom have access to electricity; thus, they cannot use a standard fridge [9][10][11]. The numerous improvements to renewable energytechnology, particularly solar energy harnessing and conversion into electrical energyby means of PV panels [12][13][14][15][16][17][18][19][20][21], brings about a good opportunity to arrst the grand challenge of electrical energy in rural areas. This being opportunity to solve not only the challenge of vaccine storage but extends to several other thermoelectric applications [22][23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Solar powered peltier cooling storage for vaccines in rural areas

Buitendach

Jiya

Gouws

2020

IJEECS

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The research presented in this paper proposes a new design of a vaccine cooling and storage unit that can keep vaccines in the cold chain (2°C to 8°C). This design was done to facilitate effective completion of the African vaccination week. The cooling and storage unit was designed to be compact, portable, well isolated and to make use of a PV solar energy system as a source of electricity. The cooling unit makes use of a Liquid to Air thermoelectric cooling module connected to some tubing and a liquid pump to cool the inside of the cooling unit. The design process also included designing a control system that controls the temperature inside the cooling holder and a monitoring system to monitor the battery voltage and capacity. The system also has a user interface that displays the temperatures inside and outside of the cooling holder, as well as the battery voltage and capacity. The cooling system successfully developed was able to keep vaccines in the cold chain for up to three days, the system could control the temperature of the vaccines with an accuracy of 1°C and was small and portable, but still had enough room to house up to 250 vaccines.

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Electrical and thermal efficiency of air-based photovoltaic thermal (PVT) systems: an overview

Cited by 12 publications

References 24 publications

An experimental study of PV/T system using parabolic reflectors and heat exchanger

An experimental study of PV/T system using parabolic reflectors and heat exchanger

Numerical study on solar photovoltaic/thermal system with tesla valve

Solar powered peltier cooling storage for vaccines in rural areas

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