alternativeАльтернативная энергетика и экология (ISJAEE)Alternative Energy and Ecology (ISJAEE)1608-8298Международный издательский дом научной периодики "Спейс10.15518/isjaee.2023.06.018-031alternative-2298Research ArticleI. ВОЗОБНОВЛЯЕМАЯ ЭНЕРГЕТИКА 1. Солнечная энергетикаI. RENEWABLE ENERGY 1. Solar EnergyМоделирование зависимости показателей геометрического положения воздуховодов в солнечном воздухоподогревателе с вогнутым воздухопроводом-поглотителем от эффективности солнечного воздухонагревателяModeling the dependence of the geometric position of air ducts in a solar air heater with a concave air absorber on the efficiency of the solar air heaterКучкаровА. А.KuchkarovA. A.

Кучкаров Акмал Ахмадалиевич, д. т. н., Заведующий кафедрой «Электроника и приборостроение», 

150107, Фергана, ул. Фергана, д. 86.

Kuchkarov Akmal A., PhD (Tech. Sciences), Head of the Department "Electronics and Instrumentation",

86, Fergana st., Fergana, 150107.

МадалиевМ. Э.MadalievM. E.

Мадалиев Муродил Эркинжон угли, д. ф-м. н., доцент кафедры «Строительство инженерных коммуникаций»,

150107, Фергана, ул. Фергана, д. 86.

Madaliev Murodil E., PhD (Physics and Mathematics Sciences), Associate Professor of the Department "Construction of Engineering Communications",

86, Fergana st., Fergana, 150107.

АбдукаримовБ. А.AbdukarimovB. A.

Абдукаримов Бекзод Абобакирович, асситент кафедры «Строительство инженерных коммуникаций»,

150107, Фергана, ул. Фергана, д. 86.

Abdukarimov Bekzod A., Assistant of the Department "Construction of Engineering communications",

86, Fergana st., Fergana, 150107.

bekzodbek45484@mail.ruФерганский политехнический институтУзбекистанFergana Polytechnic InstituteUzbekistan2023180320240101831Copyright © Международный издательский дом научной периодики "Спейс, 20232023Международный издательский дом научной периодики "СпейсМеждународный издательский дом научной периодики "Спейсhttps://www.isjaee.com/jour/about/submissions#copyrightNoticehttps://www.isjaee.com/jour/article/view/2298

Повышение тепловой эффективности солнечных воздухонагревателей имеет решающее значение для эффективного использования энергии. В данной статье рассмотрены вопросы исследования и параметрической оптимизации конвективного теплообмена в условиях турбулентного течения в рабочей камере солнечного воздухонагревателя с поглощением солнечного света абсорбером и потоком воздуха от топочных воздуховодов. Также анализируются процессы теплообмена и потери давления, и определяется оптимальная геометрия и расположение воздушного трубопровода. Кроме того, в зависимости от численного значения Рейнольдса было установлено, что рекомендуемый термогидравлический коэффициент вогнутой трубопровода имеет более высокую эффективность работы по сравнению с солнечными воздухонагревателями, приведенными в исследовательской работе. Особое внимание уделяется вопросам оптимального размещения вогнутых воздуховодов, подбираются оптимальные расстояния между воздуховодами. Вопросы повышения его теплоотдающей способности решаются за счёт затеняющего размещения вогнутых воздуховодов. Результатом является повышение производительности устройства за счёт увеличения коэффициента теплоотдачи коллектора солнечного воздухонагревателя с вогнутым воздухопоглотителем. Для этого было изучено движение вогнутых трубчатых поглотителей с различным геометрическим расположением. Также в этой статье было разработано уравнение теплового баланса для определения оптимального геометрического расположения воздуховодов и подтверждена достоверность полученных результатов. В соответствии с проведённым моделированием рассчитано размещение вогнутой трубки в форме шахматной доски на поверхности абсорбера, перпендикулярно воздушному потоку, параллельно воздушному потоку и в виде плоской воздушной трубки.

Increasing the thermal efficiency of solar air heaters is critical to the efficient use of energy. This article discusses the issues of research and parametric optimization of convective heat transfer under conditions of turbulent flow in the working chamber of a solar air heater with the absorption of sunlight by the absorber and the air flow from the combustion air ducts. Heat transfer processes and pressure losses are also analyzed and the optimal geometry and location of the air pipeline is determined. In addition, depending on the Reynolds numerical value, it was found that the recommended thermohydraulic coefficient of the concave piping has a higher operating efficiency compared to the solar air heaters given in the research paper. In addition, special attention is paid to the optimal placement of concave ducts; the optimal distances between the ducts are selected. The issues of increasing its heat-transfer capacity are solved by shading the placement of concave ducts. The result is an increase in the performance of the device by increasing the heat transfer coefficient of the collector of a solar air heater with a concave air absorber. For this purpose, the motion of concave tubular absorbers with different geometric arrangements was studied. Also in this article, the heat balance equation was developed to determine the optimal geometric arrangement of air ducts and the reliability of the results was confirmed. In accordance with the simulation carried out, the placement of a concave tube in the form of a checkerboard on the surface of the absorber is calculated perpendicular to the air flow, parallel to the air flow and in the form of a flat air tube.

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The authors declare that there are no conflicts of interest present.