Energy Aspects of Gravitational Ventilation in the Heating Season

Abstract:

Natural ventilation is currently widely used in existing buildings in order to assure the fresh air needed by occupants. The low investment and operational costs are the most important advantages of this type of ventilation. However, the dependency on the meteorological parameters has to be considered as disadvantage of the natural ventilation. In case of buoyancy-driven ventilation, the variation of the outdoor temperature results in the variation of the infiltrated air flow, CO₂ concentration in the indoor air and energy demand of the ventilation. The air inlet and outlet orifices have to be properly chosen in order to meet the indoor air quality and energy requirements at the same time. In this paper the CO₂ concentration and energy aspects of gravitational ventilation are discussed in case of a typical block of flats.

• Periodical: Applied Mechanics and Materials (Volume 861)
• Pages: 175-182
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.861.175
• Online since: December 2016
• Authors: Ferenc Kalmár*
• Keywords: Energy Demand, Gravitational Ventilation, Heating, Indoor Air Quality, Thermal Comfort

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