window ventilation

Purpose of the work

Is a ventilation system mandatory in airtight buildings? To what extent can users still be responsible for ventilation in modern buildings?

Method of approach

Evaluation of decision-making criteria for ventilation; normative specifications for the ventilation concept; energy efficiency potential of ventilation

Content of the contribution

An experimental study of the thermal performance of an air flow window with triple glazing is described. The measurements were carried out in a climatic chamber under conditions close to a winter season. In the experiments, the temperature and heat-flux distributions on each pane surface, and also the air temperature distribution over the window height at the middle of the ventilated cavity were determined. The thermal performances of forced and naturally ventilated windows with internal cavities of various thicknesses are reported for a wide range of air flow rates.