Title: 7
Author: Barbara Löbau
Last saved by: Wolfgang Feist
Company: Passivhaus Institut

11th International Passive House Conference Bregenz / Austria 	   2007-April-13 to 14

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Question The question of the actual airchange rate ....
Method With the assistance of indicator gas measurements in two Passive House projects ...
Contents A total of 9 residential units were examined ...
Results The airchange measured over the course of time amounted on average to ...
Conclusions Even in Passive Houses windows are opened in a part of the residential units in winter. The thus produced additional airchange, however, in no way impaired the operation of the ventilation or heating system. The additional energy consumption is as a rule very low.

Acknowledgements The presented examination will within the framework of IEA TASK
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