Investigating the impact of inlet aperture position on the performance of an integrated solar chimney and earth to air heat exchanger: a case study


ÖZKAN M., Akkaya V. R.

International Journal of Ventilation, 2025 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1080/14733315.2025.2505833
  • Dergi Adı: International Journal of Ventilation
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex
  • Anahtar Kelimeler: Earth-to-air heat exchanger, natural convection, passive cooling, solar chimney, thermal comfort, ventilation efficiency
  • Bilecik Şeyh Edebali Üniversitesi Adresli: Evet

Özet

Energy-efficient building design is essential in regions with hot summer climates. Passive cooling and ventilation systems, such as those integrating solar chimneys, offer a sustainable solution by reducing the need for mechanical cooling. This study computationally investigates the performance of an integrated system combining a solar chimney with an earth-to-air heat exchanger, focusing on how the location of the inlet aperture on the side wall of a ventilated room affects thermal comfort and ventilation efficiency. Steady-state, turbulent flow simulations of natural convection were conducted. The results show that placing the inlet aperture at the bottom of the side wall reduces the temperature of the drawn ambient air by 7 °C and creates a more homogeneous temperature distribution inside the ventilated space, with an average room temperature of 20 °C. When the aperture is positioned at the top, the airflow is more pleasant for occupant comfort, and the air circulates efficiently through the room, ensuring good ventilation. Despite variations in performance based on aperture location, all configurations provide adequate ventilation and cooling, making the system suitable for buildings in southern Türkiye during the summer.