Solar-Wind Generated Roof Ventilation System (SiVATAS) for a Warm-Humid Climate

Satwiko, Prasasto (2004) Solar-Wind Generated Roof Ventilation System (SiVATAS) for a Warm-Humid Climate. International Journal of Ventilation, 3 (3). pp. 209-218. ISSN 1473-3315

Preview

Text Sivatas-artikel.pdf Download (1MB) | Preview

Abstract

This research grows out of a desire to find a Solar-Wind Generated Roof Ventilation System for low-cost dwellings located in high building density urban areas where horizontal air movement is restricted. A general purpose computational fluid dynamics (CFD-ACE+) program was utilised to explore, analyse and develop a roof model based on its aerodynamics and thermal performance to obtain optimum wind pressure and temperature differences. Comparisons were made with physical scale models. The research found that a roof prototype with inclinations of 15 o and 45 o , curved ridge with cap, integrated roof chimney, black-matte steel sheet cover, combined with a perforated under floor channel (floor tunnel), can generate evenly distributed vertical cross ventilation within the occupant’s zone. The created indoor air velocity was in the range of 0.15 to 0.7 m/s, which is considered to be sufficient to produce a physiological cooling effect. As an addition, the CFD program has proved to be a reliable, user-friendly and helpful research tool.

Actions (login required)

View Item