Evaluation of Ventilation System Efficiency with Reference to Ceiling Height in Warm-Humid Climate of Pakistan

This research is about the effectiveness of ventilation systems for human thermal comfort concerning the height of the ceilings which contribute to green building structures, especially for residential areas. One of the greatest challenges in architecture is the cost of mechanical ventilation and the need for energy demand for cooling in hot and humid climates. The study is based on quantitative data of the selected houses, keeping constant the areas, location, elevation features, plant placement, and open spaces. Temperature records for 20 days of 10 low ceiling houses (LCH) and 10 high ceiling houses (HCH) with ventilators, 200 observations each, are compared using independent sample t-test. The mean temperature is 15.31°C in LCH and 13.88°C in HCH, with the difference of 1.43°C so the alternative hypothesis that there is a significant difference between the average temperature of LCH and HCH with ventilators, is accepted. The other benefits of ventilation cannot be ignored which we get in the high ceiling houses. This would also help to reduce moisture, smoke, odor, heat, dust, and bacteria.