Ventilation for Comfort in Passive Residential Living Spaces in a Warm-Humid Urban Environment (Published)
The natural ventilation provision for comfort in selected residential estate buildings in Ibadan, Nigeria was assessed in this paper. This was with a view to assessing the indoor air movement for comfort and sustainability of passively operated urban living spaces within a warm-humid climatic environment. Systematic sampling was used to select 91 buildings from the 273 in the estate. The ventilation analysis indicated that the living-room spaces in the buildings had adequate comfort ventilation with the average indoor wind speed obtained ranging from 0.21m/s to 0.24m/s. In the comfort survey it was found that 82% of the total votes of the respondents were within the comfort zone and 72% of the respondents preferred their naturally ventilated spaces to air-conditioned spaces. The buildings were adjudged to be comfortable and sustainable since they operate passively and are maintained at no extra cost to the users.
Natural Ventilation and Body Heat Comfort: An Evaluation of Residents Satisfaction in Ogbomoso, Nigeria. (Published)
This study evaluates the variations in the level of natural ventilation in houses across the three main residential density zones of Ogbomoso. The study employs two approaches. First, it surveys the perception of residents with respect to the body heat comfort in their houses. Second, it examines the window opening sizes for compliance with floor areas considered desirable for effective natural ventilation in a warm humid climate like Nigeria. The main objective is to validate residents perception of body heat comfort through the assessment of window opening to floor areas ratio. The methodology employed is the multi-stage sampling procedure where houses are sampled from sampled streets, and a household head sampled from each house, such that the perception of residents and evaluation of window and floor areas ratio are both carried out on the same household and house, respectively. The result shows that residents’ satisfaction as well as window to floor areas decreases with residential density zones.