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223302

Thermal Enhancement of Parabolic Trough Collectors using Absorber Tubes with Internally longitudinal Round Edge Fins

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Last updated: 24 Dec 2024

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Abstract

In this paper, the heat transfer characteristics of the absorber tube with the module of LS-2 parabolic trough collector with internal longitudinal fins with rectangular crosssection are investigated using ANSYS CFD and oil syltherm 800 type as a heat transfer fluid. The simulation is conducted using the internal longitudinal fins with sharp edge and round edge over a wide range of the heat transfer fluid inlet temperature (300 :600K), flow rate (9 :27 m3 /h) and direct normal irradiance (800:1100W/m2 ) at fin thickness of 4 mm, fin length of 25 mm, radius of round edge of 4 mm and angle between fins of 45⁰. The thermal efficiency, Nusselt Number, pressure losses, and thermal enhancement index are calculated at different operating conditions. The results showed that the heat transfer characteristics of rectangular fins with round edge are better than those with sharp edge in solar parabolic trough collector. The round edge fins yield higher Nusselt number and lower pressure losses than those of the sharp edge fins by 5.6% and 9.32%; respectively, at inlet temperature of 600 K, oil flow rate of 9 m3 /h., and direct normal irradiance of 1000W/m2 .

DOI

10.21608/erj.2022.223302

Keywords

Rectangular finned absorber, round edge, non- uniform heat flux, thermal enhancement index, pressure losses, Thermal Efficiency

Authors

First Name

Nourhan

Last Name

B. Saad

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Affiliation

. Mech. Power Eng. Dep

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First Name

Antar

Last Name

M M Abdala

MiddleName

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Affiliation

. Mech. Power Eng. Dep

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First Name

M.

Last Name

Fatouh

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Affiliation

Mech. Power Eng. Dep., Fac. of Eng. @ El-Mattaria, Helwan Uni., Masaken El-Helmia P.O., Cairo 11718, Egypt. . High Institute for Eng. & Tech. - Obour, k21 Cairo/Belbies Rd, Egypt

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Volume

173

Article Issue

0

Related Issue

31807

Issue Date

2022-03-01

Receive Date

2022-03-07

Publish Date

2022-03-01

Page Start

356

Page End

375

Print ISSN

1110-5615

Link

https://erj.journals.ekb.eg/article_223302.html

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https://erj.journals.ekb.eg/service?article_code=223302

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19

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Original Article

Type Code

998

Publication Type

Journal

Publication Title

Engineering Research Journal

Publication Link

https://erj.journals.ekb.eg/

MainTitle

Thermal Enhancement of Parabolic Trough Collectors using Absorber Tubes with Internally longitudinal Round Edge Fins

Details

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Article

Created At

22 Jan 2023