Performance Evaluation of Roughened Solar Air Heaters for Stretched Parameters

Mustafa Alaskari; Arwa M. Kadhim; Ammar A. Farhan; Moustafa Al-Damook; Mansour Al Qubeissi

doi:10.3390/cleantechnol4020034

Performance Evaluation of Roughened Solar Air Heaters for Stretched Parameters

Mustafa Alaskari
, Arwa M. Kadhim
, Ammar A. Farhan
, Moustafa Al-Damook
, Mansour Al Qubeissi

Centre for Manufacturing and Materials

University of Baghdad
University of Anbar

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

143 Downloads (Pure)

Abstract

Artificial roughness applied to a Solar Air Heater (SAH) absorber plate is a popular technique for increasing its total thermal efficiency (ηt−th). In this paper, the influence of geometrical parameters of V-down ribs attached below the corrugated absorbing plate of a SAH on the ηt−th was examined. The impacts of key roughness parameters, including relative pitch p/e (6–12), relative height e/D (0.019–0.043), angles of attack α (30–75°), and Re (1000–20,000), were examined under real weather conditions. The SAH ηt−th roughened by V-down ribs was predicted using an in-house developed conjugate heat-transfer numerical model. The maximum SAH ηt−th was shown to be 78.8% as predicted under the steady-state conditions of Re = 20,000, solar irradiance G = 1000 W/m2, p/e = 8, e/D = 0.043, and α = 60. The result was 15.7% greater efficiency compared to the default smooth surface. Under real weather conditions, the ηt−th of the roughened SAH with single- and double-glass covers were 17.7 and 20.1%, respectively, which were higher than those of the smooth SAH.

Original language	English
Pages (from-to)	555-569
Number of pages	15
Journal	Clean Technologies
Volume	4
Issue number	2
DOIs	https://doi.org/10.3390/cleantechnol4020034
Publication status	Published - 16 Jun 2022

Bibliographical note

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy
SDG 11 Sustainable Cities and Communities
SDG 13 Climate Action

Keywords

PV/T
Solar energy
Thermodynamic model
Thermofluids
Modeling and Simulation
Heat Transfer
Radiation

ASJC Scopus subject areas

Environmental Engineering
Energy Engineering and Power Technology
Renewable Energy, Sustainability and the Environment

Access to Document

10.3390/cleantechnol4020034Licence: CC BY

PublishedFinal published version, 1.65 MBLicence: CC BY

Cite this

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title = "Performance Evaluation of Roughened Solar Air Heaters for Stretched Parameters",

abstract = "Artificial roughness applied to a Solar Air Heater (SAH) absorber plate is a popular technique for increasing its total thermal efficiency (ηt−th). In this paper, the influence of geometrical parameters of V-down ribs attached below the corrugated absorbing plate of a SAH on the ηt−th was examined. The impacts of key roughness parameters, including relative pitch p/e (6–12), relative height e/D (0.019–0.043), angles of attack α (30–75°), and Re (1000–20,000), were examined under real weather conditions. The SAH ηt−th roughened by V-down ribs was predicted using an in-house developed conjugate heat-transfer numerical model. The maximum SAH ηt−th was shown to be 78.8\% as predicted under the steady-state conditions of Re = 20,000, solar irradiance G = 1000 W/m2, p/e = 8, e/D = 0.043, and α = 60. The result was 15.7\% greater efficiency compared to the default smooth surface. Under real weather conditions, the ηt−th of the roughened SAH with single- and double-glass covers were 17.7 and 20.1\%, respectively, which were higher than those of the smooth SAH.",

keywords = "PV/T, Solar energy, Thermodynamic model, Thermofluids, Modeling and Simulation, Heat Transfer, Radiation",

author = "Mustafa Alaskari and Kadhim, \{Arwa M.\} and Farhan, \{Ammar A.\} and Moustafa Al-Damook and \{Al Qubeissi\}, Mansour",

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doi = "10.3390/cleantechnol4020034",

language = "English",

volume = "4",

pages = "555--569",

journal = "Clean Technologies",

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AU - Alaskari, Mustafa

AU - Kadhim, Arwa M.

AU - Farhan, Ammar A.

AU - Al-Damook, Moustafa

AU - Al Qubeissi, Mansour

N1 - This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

PY - 2022/6/16

Y1 - 2022/6/16

N2 - Artificial roughness applied to a Solar Air Heater (SAH) absorber plate is a popular technique for increasing its total thermal efficiency (ηt−th). In this paper, the influence of geometrical parameters of V-down ribs attached below the corrugated absorbing plate of a SAH on the ηt−th was examined. The impacts of key roughness parameters, including relative pitch p/e (6–12), relative height e/D (0.019–0.043), angles of attack α (30–75°), and Re (1000–20,000), were examined under real weather conditions. The SAH ηt−th roughened by V-down ribs was predicted using an in-house developed conjugate heat-transfer numerical model. The maximum SAH ηt−th was shown to be 78.8% as predicted under the steady-state conditions of Re = 20,000, solar irradiance G = 1000 W/m2, p/e = 8, e/D = 0.043, and α = 60. The result was 15.7% greater efficiency compared to the default smooth surface. Under real weather conditions, the ηt−th of the roughened SAH with single- and double-glass covers were 17.7 and 20.1%, respectively, which were higher than those of the smooth SAH.

AB - Artificial roughness applied to a Solar Air Heater (SAH) absorber plate is a popular technique for increasing its total thermal efficiency (ηt−th). In this paper, the influence of geometrical parameters of V-down ribs attached below the corrugated absorbing plate of a SAH on the ηt−th was examined. The impacts of key roughness parameters, including relative pitch p/e (6–12), relative height e/D (0.019–0.043), angles of attack α (30–75°), and Re (1000–20,000), were examined under real weather conditions. The SAH ηt−th roughened by V-down ribs was predicted using an in-house developed conjugate heat-transfer numerical model. The maximum SAH ηt−th was shown to be 78.8% as predicted under the steady-state conditions of Re = 20,000, solar irradiance G = 1000 W/m2, p/e = 8, e/D = 0.043, and α = 60. The result was 15.7% greater efficiency compared to the default smooth surface. Under real weather conditions, the ηt−th of the roughened SAH with single- and double-glass covers were 17.7 and 20.1%, respectively, which were higher than those of the smooth SAH.

KW - PV/T

KW - Solar energy

KW - Thermodynamic model

KW - Thermofluids

KW - Modeling and Simulation

KW - Heat Transfer

KW - Radiation

UR - https://www.scopus.com/pages/publications/85132789280

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JF - Clean Technologies

IS - 2

ER -

Performance Evaluation of Roughened Solar Air Heaters for Stretched Parameters

Abstract

Bibliographical note

UN SDGs

Keywords

ASJC Scopus subject areas

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