Journals on Biomedical Intervention - BJSTR Journal

Abstract

One of the deficiencies of the #low-cost housing in South Africa is #poor ventilation efficiency. These houses are characterized by poor indoor air quality, and this is mainly attributed to poorhouse design with no regard to orientation and prevailing winds. This paper evaluates the impact of the ventilation components on the ventilation rate in a passive solar energy efficient house. Windows were found to have a higher impact on the ventilation rates than doors. Results also indicate that the house meets the South African residential #ventilation rates specifications. The indoor carbon dioxide concentration monitored over night was found to be 0.248%, which is less than the maximum range limit of 0.500%. Ventilation is usually reduced during the winter period due to cold weather and the indoor environment is starved of fresh air. There is need to have efficient heating system to guarantee good air quality. Many rural communities in South Africa use coal as an energy heat source and this result in the contamination of the indoor air in addition to high indoor temperature swings resulting in thermally uncomfortable environment, the low-cost housing in South Africa have poor indoor air quality and #natural light distribution. The poor ventilation efficiency of these houses is due to poorhouse design. Quality of indoor environment depends significantly on several aspects, which include ventilation rate and lighting [1]. Site factors such as temperature, wind speed and direction, orientation of the house, and construction type have significant varying impacts on the natural infiltration [2]. House operation plays a key role in controlling a comfortable indoor environment. A low-cost energy efficient passive solar house was constructed on a site that experience westerly prevailing winds and the house was designed to make use of these winds to control the indoor #environment thermal conditions.

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On Impact of the Ventilation Components on the Ventilation Rate in a Passive Solar Energy Efficient House by Golden Makaka in BJSTR