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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December 2018
Research-Article
Exergy Analysis of a Flat Plate Solar Collector With Grooved Absorber Tube Configuration Using Aqueous ZnO–Ethylene Glycol
Yash Kashyap,
Yash Kashyap
School of Mechanical Engineering,
Vellore Institute of Technology,
Vellore 632014, Tamil Nadu, India
e-mail: ykashyap.2102@gmail.com
Vellore Institute of Technology,
Vellore 632014, Tamil Nadu, India
e-mail: ykashyap.2102@gmail.com
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Apurva Singh,
Apurva Singh
School of Mechanical Engineering,
Vellore Institute of Technology,
Vellore 632014, Tamil Nadu, India
e-mail: singhapurva185.as@gmail.com
Vellore Institute of Technology,
Vellore 632014, Tamil Nadu, India
e-mail: singhapurva185.as@gmail.com
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Y. Raja Sekhar
Y. Raja Sekhar
School of Mechanical Engineering,
Vellore Institute of Technology,
Vellore 632014, Tamil Nadu, India
e-mail: rajasekhar.y@vit.ac.in
Vellore Institute of Technology,
Vellore 632014, Tamil Nadu, India
e-mail: rajasekhar.y@vit.ac.in
Search for other works by this author on:
Yash Kashyap
School of Mechanical Engineering,
Vellore Institute of Technology,
Vellore 632014, Tamil Nadu, India
e-mail: ykashyap.2102@gmail.com
Vellore Institute of Technology,
Vellore 632014, Tamil Nadu, India
e-mail: ykashyap.2102@gmail.com
Apurva Singh
School of Mechanical Engineering,
Vellore Institute of Technology,
Vellore 632014, Tamil Nadu, India
e-mail: singhapurva185.as@gmail.com
Vellore Institute of Technology,
Vellore 632014, Tamil Nadu, India
e-mail: singhapurva185.as@gmail.com
Y. Raja Sekhar
School of Mechanical Engineering,
Vellore Institute of Technology,
Vellore 632014, Tamil Nadu, India
e-mail: rajasekhar.y@vit.ac.in
Vellore Institute of Technology,
Vellore 632014, Tamil Nadu, India
e-mail: rajasekhar.y@vit.ac.in
1Corresponding author.
Contributed by the Solar Energy Division of ASME for publication in the JOURNAL OF SOLAR ENERGY ENGINEERING: INCLUDING WIND ENERGY AND BUILDING ENERGY CONSERVATION. Manuscript received March 12, 2018; final manuscript received June 10, 2018; published online July 9, 2018. Assoc. Editor: Gerardo Diaz.
J. Sol. Energy Eng. Dec 2018, 140(6): 061011 (10 pages)
Published Online: July 9, 2018
Article history
Received:
March 12, 2018
Revised:
June 10, 2018
Citation
Kashyap, Y., Singh, A., and Raja Sekhar, Y. (July 9, 2018). "Exergy Analysis of a Flat Plate Solar Collector With Grooved Absorber Tube Configuration Using Aqueous ZnO–Ethylene Glycol." ASME. J. Sol. Energy Eng. December 2018; 140(6): 061011. https://doi.org/10.1115/1.4040582
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