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Air tightness assesment of buildings from the point of view of energy and comfort.

Number: pap. 638

Author(s) : FÜLÖP L., KOŠKI Ž., MAGYAR Z.

Summary

Ventilation of old buildings and houses without renovation mostly rely on natural ventilation due to unavoidable air gaps of windows and doors. In order to achieve low energy consumption, controlled natural or mechanical ventilation must be applied together with air tight construction. Air gaps cause uncontrolled ventilation that is insufficient when the temperature difference between inside and outside is small and the wind speed is low. As opposite, it is excessive during cold and windy weather. Insufficient air tightness has a secondary effect to energy demand via air quality and local thermal comfort problems. Too high air velocity in a room in cold weather results in local discomfort assuming that the draught effect is only detectable at certain locations. As a result room air temperature must be set higher. Standards for air-change rate and volume flow as well as methods for air tightness do exist but there is not enough information on the air tightness quality and usual air change rates neither of the existing building stock nor that of the new buildings and houses. An EU supported joint IPA project of University of Pécs, Hungary and University of Osijek, Croatia is aimed to gather information on the air tightness and air-change rate of the buildings and houses in the border region of Hungary and Croatia of various construction types, use and age.

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Pages: 10 p.

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Details

  • Original title: Air tightness assesment of buildings from the point of view of energy and comfort.
  • Record ID : 30009427
  • Languages: English
  • Source: Clima 2013. 11th REHVA World Congress and 8th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings.
  • Publication date: 2013/06/16

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