window ventilation

New and modernized buildings must have ventilation systems – that’s the widely held view. But is it true? What is the energy efficiency potential of a residential ventilation system – and what is the motivation for providing ventilation systems? The DIN 1946-6 standard for the ventilation of residential buildings allows for outdoor air...

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.