Моделирование зависимости показателей геометрического положения воздуховодов в солнечном воздухоподогревателе с вогнутым воздухопроводом-поглотителем от эффективности солнечного воздухонагревателя

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.

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