Journal of the Brazilian Society of Mechanical Sciences and Engineering, Год журнала: 2024, Номер 47(1)
Опубликована: Дек. 19, 2024
Язык: Английский
Energy Reports, Год журнала: 2025, Номер 13, С. 2021 - 2034
Опубликована: Янв. 29, 2025
Язык: Английский
Процитировано
2
Energy, Год журнала: 2025, Номер 316, С. 134480 - 134480
Опубликована: Янв. 9, 2025
Язык: Английский
Процитировано
1
International Journal of Thermofluids, Год журнала: 2024, Номер unknown, С. 100979 - 100979
Опубликована: Ноя. 1, 2024
Язык: Английский
Процитировано
6
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
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
Experimental Heat Transfer, Год журнала: 2025, Номер unknown, С. 1 - 26
Опубликована: Май 15, 2025
Язык: Английский
Процитировано
0
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
Journal of Thermal Analysis and Calorimetry, Год журнала: 2024, Номер unknown
Опубликована: Дек. 16, 2024
Язык: Английский
Процитировано
2
Journal of the Brazilian Society of Mechanical Sciences and Engineering, Год журнала: 2024, Номер 47(1)
Опубликована: Дек. 19, 2024
Язык: Английский
Процитировано
0