Exergy efficiency investigation and optimization of an Al2O3–water nanofluid based Flat-plate solar collector

An increase in exergy efficiency of flat plate solar collector leads to a considerable improvement in collector’s performance. Different parameters influence the performance of collector. In this paper, Sequential Quadratic Programming (SQP) and Genetic Algorithm (GA) have been employed for optimizing exergy efficiency of the flat plate solar collector. Absorber plate area and mass flow rate of inlet water have been considered as optimization’s variables. The results show the possibility to reach higher exergy efficiency with lower absorber area and consequently lower price. Also it is obvious that SQP method performs optimization process with higher convergence speed but lower accuracy than GA.

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Energy and exergy analysis of air based photovoltaic thermal (PVT) collector: a review

International Journal of Electrical and Computer Engineering (IJECE) ◽

10.11591/ijece.v9i1.pp109-117 ◽

2019 ◽

Vol 9 (1) ◽

pp. 109 ◽

Cited By ~ 1

Author(s):

Ahmad Fudholi ◽

Mariyam Fazleena Musthafa ◽

Abrar Ridwan ◽

Rado Yendra ◽

Ari Pani Desvina ◽

...

Keyword(s):

Solar Radiation ◽

Flat Plate ◽

Solar Collector ◽

Exergy Analysis ◽

Exergy Efficiency ◽

Pv Panel ◽

Energy And Exergy ◽

Energy And Exergy Analysis ◽

Flat Plate Solar Collector

<span lang="EN-US">Photovoltaic thermal (PVT) collectors convert solar radiation directly to both electrical and thermal energies. A PVT collector basiccaly combines the functions of a flat plate solar collector and those of a PV panel. This review presents thermodinamics fundamentals, descriptions, and previous works conducted on energy and exergy analysis of air based PVT collector. Studies in 2010 to 2018 of the energy and exergy analysis of air based PVT collectors are summarized. The energy and exergy efficiency of air based PVT collector ranges from 31% to 94% and 8.7% to 18%, respectively. In addition, flat plate solar collector is presented. Studies conducted on air based PVT collectors are reviewed.</span>

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Heat Transfer, Energy and Exergy Efficiency Enhancement of Nanodiamond/Water Nanofluids Circulate in a Flat Plate Solar Collector

Journal of Enhanced Heat Transfer ◽

10.1615/jenhheattransf.2021036876 ◽

2021 ◽

Author(s):

Lingala Syam Sundar

Keyword(s):

Heat Transfer ◽

Flat Plate ◽

Solar Collector ◽

Exergy Efficiency ◽

Efficiency Enhancement ◽

Transfer Energy ◽

Energy And Exergy ◽

Flat Plate Solar Collector

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Exergy Analysis of a Flat Plate Solar Collector With Grooved Absorber Tube Configuration Using Aqueous ZnO–Ethylene Glycol

Journal of Solar Energy Engineering ◽

10.1115/1.4040582 ◽

2018 ◽

Vol 140 (6) ◽

Cited By ~ 4

Author(s):

Yash Kashyap ◽

Apurva Singh ◽

Y. Raja Sekhar

Keyword(s):

Ethylene Glycol ◽

Flat Plate ◽

Solar Collector ◽

Volume Fraction ◽

Exergy Efficiency ◽

Working Fluid ◽

Plain Tube ◽

Collector Temperature ◽

Grooved Tube ◽

Flat Plate Solar Collector

In this study, the exergetic performance of a flat plate solar collector (FPSC) setup with ZnO-based ethylene glycol (EG)/water nanofluid as a working fluid has been evaluated against that of EG/water. As a passive means to augment the rate of heat transfer, internally grooved tubes of two different pitches (e = 0.43 and e = 0.44) have been examined and compared against the performance of plain tube. The mass flow rate was fixed at 0.015 kg/s and the volume fraction of ZnO nanoparticles is ф = 0.02% v/v. The results indicate an enhancement in exergy efficiency of 44.61% when using the grooved tube (e = 0.44) against plain tube without the nanofluid and 39.17% when nanofluid is used. Using the nanofluid enhanced the exergy efficiency of the FPSC by a maximum of 73.81%. Maximum exergy efficiency obtained was 5.95% for grooved tube (e = 0.44) with nanofluid as working fluid and is in good agreement with previous literature. Exergy destruction/irreversibility due to temperature differences and heat flow within the system has been reported. Sun-collector temperature difference accounts for nearly 86–94% of the irreversibility. The results for thermal efficiency of this experimental setup have been published and summarized in this study for reference.

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