Energy and exergy analysis of solar air heater utilizing noble half conical ribs of various designs: an experimental study DOI

Ravi Shankar,

Rajeev Kumar, Arun Kumar Pandey

и другие.

Journal of the Brazilian Society of Mechanical Sciences and Engineering, Год журнала: 2024, Номер 47(1)

Опубликована: Дек. 19, 2024

Язык: Английский

Optimizing double-pass solar air collector efficiency: Impact of a perforated discrete V-angled fins DOI
Maytham H. Machi, I. Farkas,

J. Buzás

и другие.

Energy Reports, Год журнала: 2025, Номер 13, С. 2021 - 2034

Опубликована: Янв. 29, 2025

Язык: Английский

Процитировано

2

Experimental evaluation of recycled aluminum cans solar air heater: Comprehensive 4E assessments DOI
M.A. Abdelrahman, Osama A. Gaheen, Mohamed A. Aziz

и другие.

Energy, Год журнала: 2025, Номер 316, С. 134480 - 134480

Опубликована: Янв. 9, 2025

Язык: Английский

Процитировано

1

Energy, exergy, economic and environmental analysis of a solar air heater integrated with double triangular fins: Experimental investigation DOI Creative Commons
Ahmed K. Albdoor, Zain Alabdeen H. Obaid, Mohammed Saad Kamel

и другие.

International Journal of Thermofluids, Год журнала: 2024, Номер unknown, С. 100979 - 100979

Опубликована: Ноя. 1, 2024

Язык: Английский

Процитировано

6

Effect of absorber shape on energy, exergy efficiency and enviro‐economic analysis of solar air collector: An experimental study DOI

Yassmin Touhami,

Ridha Boudhiaf, A.E. Kabeel

и другие.

Environmental Progress & Sustainable Energy, Год журнала: 2024, Номер unknown

Опубликована: Сен. 23, 2024

Abstract The efficiency of solar air collectors, which are intended to convert energy into thermal energy, is the subject numerous studies that aim assess and improve it. Solutions for sustainable heavily rely on these systems. Making right choice regarding best method absorbing radiation reducing heat losses what will ultimately lead their improved performance. In this work, wavy corrugated absorbers were suggested inside a collector. article study experimentally performance collector when using shape absorber instead flat under same weather conditions Sfax region central‐eastern Tunisia. shapes augmented sun exposure heating area. results obtained from experimental show switching plate both resulting significant gains. with waves showed improvement in daily 22.89%, corrugations an even greater 40.56%. Comparable patterns noted exergy efficiency, where demonstrated astounding 44.83% increase provided 23.24% improvement. Notably, total cost savings monthly CO 2 reduction taken account, turned out be option. These findings highlight importance form optimizing may have positive effects economy environment.

Язык: Английский

Процитировано

4

Optimization of Thermohydraulic Parameters in Solar Air Heater Ducts Featuring I‐Shaped Ribs DOI

Hasan Abdulkadim Abbas Alhilali,

Kadhim K. Idan Al‐Chlaihawi,

Ahmed Kadhim Zarzoor

и другие.

Heat Transfer, Год журнала: 2025, Номер unknown

Опубликована: Май 13, 2025

ABSTRACT Solar air heaters (SAHs) are among the most useful devices for collecting solar energy and utilizing it heating purposes. The primary aim of this endeavor is to enhance performance SAH. This accomplished by artificially roughening surface absorber using ribs. A two‐dimensional computational fluid dynamics study looks at how a novel I‐shaped ribs affect hydraulic thermal in SAH channel was carried out. re‐normalisation group turbulence model utilized numerical simulation, its accuracy evaluated against proven correlations literature findings. Various discrete rib parameters, such as pitch ratio ( range 7.14–17.86) relative width 0.5–1), have been optimized Reynolds number () 6000–21,000, considering fixed value roughness height 0.042. main findings presented terms Nusselt (), friction factor thermal–hydraulic parameter (THPP), visualization various characteristics. results demonstrate that compared with smooth duct, current geometries significantly improve heat transmission mixing, boosting 2.498–2.978 times 2.812–4.393 times. determined optimal characteristics . combination achieved peak THPP 2.014. generalized correlation has established Nu numerically projected results.

Язык: Английский

Процитировано

0

Performance testing of a baffled duct at different air attack angles based on entropy generation and exergy analysis DOI
Rajeev Pandey

Experimental Heat Transfer, Год журнала: 2025, Номер unknown, С. 1 - 26

Опубликована: Май 15, 2025

Язык: Английский

Процитировано

0

A comprehensive review of rectangular duct solar air heaters featuring artificial roughness DOI Creative Commons

Ravi Shankar,

Rajeev Kumar, Arun Kumar Pandey

и другие.

Clean Energy, Год журнала: 2024, Номер 8(5), С. 186 - 217

Опубликована: Сен. 3, 2024

Abstract Solar air heaters (SAHs) are widely used solar thermal systems with applications in diverse sectors. However, its effectiveness is restrained by low convective heat transfer (HT) coefficients at the absorber plate, leading to inefficient HT, and elevated temperature of plate causes significant losses, reducing efficiency. This study addresses these challenges introducing ribs or roughness on creating turbulence airflow, resulting improvements. The research investigates various rib configurations, influence parameters, performance methods, arrangements evaluate their HT friction characteristics. Among a comparative analysis done factors such as Nusselt number ratio, enhancement factor, factor efficiency optimize distinct parameters arrangement patterns. also provides valuable recommendations from existing literature, offering insights into effective design, prospects, implementation SAH systems.

Язык: Английский

Процитировано

2

Analysis of exergy in a dimple-roughened solar thermal collector using MATLAB simulation DOI Creative Commons
Rajiv Kumar, Muneesh Sethi, Abhishek Thakur

и другие.

Journal of Thermal Analysis and Calorimetry, Год журнала: 2024, Номер unknown

Опубликована: Дек. 16, 2024

Язык: Английский

Процитировано

2

Energy and exergy analysis of solar air heater utilizing noble half conical ribs of various designs: an experimental study DOI

Ravi Shankar,

Rajeev Kumar, Arun Kumar Pandey

и другие.

Journal of the Brazilian Society of Mechanical Sciences and Engineering, Год журнала: 2024, Номер 47(1)

Опубликована: Дек. 19, 2024

Язык: Английский

Процитировано

0