BUILDUP

The European Portal For Energy Efficiency In Buildings

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25 May 2012 | undefined
There are several initiatives to collect building airtightness data from field measurements whose number increases rapidly with the trend towards low-energy buildings. The objective of this ...
| 1528 visits | Rating : No votes
11 - 12 May 2012 | Stuttgart, Germany
The 7th International BUILDAIR-Symposium´s topic this year "Building and Ductwork Air Tightness in Practice“ will be addressed to experienced practitioners as well as to beginners. As usual the ...
| 3011 visits | Rating : 5/5
17 September 2010
The Web Event "Envelope airtightness measurement method and equipment - Building preparation and uncertainty estimation" will take place on 17 September 2010, 08.30-10.30 (Brussels ...
| 2845 visits | Rating : 5/5
21 - 22 October 2010 | Copenhagen ( Denmark )
The 5th International BUILDAIR-Symposium ”Building and Ductwork Air-tightness“ takes place on October 21-22 2010 at the Danish Technical University in Copenhagen/Lyngby, Denmark.
| 3733 visits | Rating : 5/5
14 - 15 June 2010 | Brussels ( Belgium )
This international workshop aims to give a good overview of all the issues involved in building airtightness, with specific attention to planning aspects, execution and evaluation. Attention will ...
| 3055 visits | Rating : 5/5
Answered by Peter G. Schild, SINTEF Building & Infrastructure
Answered on 16 December 2009
Visits: 4048 visits
Although this seems to be true, this is a dangerous generalization. There are many factors that govern airtighness of round ductwork, including roundness (any slight ovality can cause leakage at ...
Answered by Peter G. Schild, SINTEF Building & Infrastructure
Answered on 16 December 2009
Visits: 4508 visits
This is generally not possible. In systems with good airtightness, the leakage flow rates are too small for one to be able to accurately measure the flow rate over the fan.

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