airtightness

Are you interested in building and ductwork air tightness? Please meat us in Copenhagen October 2010.

We will have a scientific and research program on the first day and a very practical program on the second day. What would be your interests, ideas?

Please post your ideas in this blog to give us input for the conference.

For more information look: www.buildair.de



Call for papers for the 5th International BUILDAIR-Symposium ”Building and Ductwork Air-tightness“ on October 21-22 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.

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The Symposium this year combines contributions from sciences and research with very practical oriented application knowledge and an intensive exchange between the participants.

Publication

ANSI/ASHRAE Standard 62.1-2013, Ventilation for Acceptable Indoor Air Quality

For Release:                                Oct. 24, 2013    Contact: Jodi ScottPublic Relations678-539-1140jscott@ashrae.orgASHRAE Publishes 2013 Version of IAQ StandardATLANTA – The 2013 version of ASHRAE’s indoor air...
Publication

Mechanical ventilation with heat recovery in new homes: Final report

The move towards higher levels of energy efficiency of new homes, improved airtightness and increased use of mechanical ventilation with heat recovery (MVHR) systems have caused concerns to be raised about indoor air quality and possible...
Publication

Compliance and Control – Overview and Outcomes 2012, Concerted Action EPBD

This report is the result of the work performed in this field under the Concerted Action EPBD in 2011-2012 and describes the state of the art, main accomplishments and barriers across Europe as concerns compliance checking, quality control...
News

Building Airtightness Testing Webinar: UK, Denmark and Belgium

Airtightness testing: status and trends in competent tester schemes in the UK, Denmark and BelgiumOver the past few years, there has been an increasing number of airtightness tests performed in Europe either for specific...
News

Building Airtightness Testing Webinar: Germany, the Czech Republic and France

Airtightness testing: status and trends in competent tester schemes in Germany, the Czech Republic and FranceOver the past few years, there has been an increasing number of airtightness tests performed in Europe either for...
Event

Webinar: Airtightness testing: status and trends in competent tester schemes in Germany, the Czech Republic and France

Over the past few years, there has been an increasing number of airtightness tests performed in Europe either for specific high performance buildings programmes or for a wide range of buildings in regulatory contexts. This has led to the...
Event

Webinar: Airtightness testing: status and trends in competent tester schemes in the UK, Denmark and Belgium

Over the past few years, there has been an increasing number of airtightness tests performed in Europe either for specific high performance buildings programmes or for a wide range of buildings in regulatory contexts. This has led to the...
Publication

Inspection par les artisans de l'enveloppe du bâtiment à l'aide de caméras thermographie infrarouge

This report from the French Program RAGE 2012 gives the results of a study operated by CDPEA about the use of infrared thermography by building contractors in order to assess the quality of their own work.

Will airtightness measurements be mandatory in 2020?

The recast of the EPBD imposes that all EU member states impose near-zero energy targets for new buildings. In practice, it will require that the building airtightness level has to be assessed. one can imagine several ways to assess the airtightness, e.g. the measurement of each building, the measurement of a reference building, standard building details, ....  Many people expect that indeed each building have to be measured, whereby in addition a good airtightness level has to be reached.  What is your opinion? 

Is it true to say that round ventilation ducts with a single gasket generally achieve airtightness Class C?

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 the joints) and the flatness of the seams at the joints between two ducts (protuding or convex seams can cause point leakages at the joint irrespective of the gasket type).
Is it true to say that round ventilation ducts with a single gasket generally achieve airtightness Class C?

Is it possible to use the HVAC fan itself to measure the airtightness of the ductwork in a ventilation system?

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.

For more information you can check-out the Webevent presentation “Duct System Leakage Testing — Methods, requirements, handing over” by P.G.Schild, available on the website www.asiepi.eu


Is it possible to use the HVAC fan itself to measure the airtightness of the ductwork in a ventilation system?