Submitted by Maria.Kapsalaki on Thu, 11/23/2017 - 09:27
The airtightness just after the end of a building phase is assumed to be relevant criteria for high energy performance. Testing on site the initial performance of the airtightness via the blower door test has become nowadays a common practice but generally implemented before the occupation of the building. But a lot of questions are still remaining targeting the sustainability of the performances.
Submitted by Maria.Kapsalaki on Thu, 11/23/2017 - 09:27
Wind pressure and thermal forces are driving forces for pressure difference on the building envelope. In European and German standards infiltration is calculated using wind speed, temperature difference and wind pressure coefficients resulting from upstream and downstream flow on the building envelope. This long term measurements shall present measured pressure differences on the building envelope in comparison to those calculations
The International Energy Agency's Energy in Buildings and Communities (IEA-EBC) Programme newsletter of November 2017 (Issue 66) has been released. The current edition includes an introduction of Canadian policies and movements, also with updates on EBC’s major R&D projects that cover ways to realise both better indoor air quality and higher energy efficiency, reconsideration of thermal comfort by using energy more wisely, and analysis of real energy use and relevant factors by using big data.
The evaluation questionnaire of the 38th AIVC conference: “Ventilating healthy low-energy buildings” held in Nottingham-UK on September 13-14, 2017, was sent out to 170 attendees of the event. A summary of the results with feedback from 90 of the participants is now available here.
Submitted by Maria.Kapsalaki on Wed, 09/06/2017 - 17:44
Because buildings are responsible for 40% of energy use and 36% of Greenhouse Gas (GHG) emissions in the EU, energy efficiency in buildings has become a priority to drastically reduce the energy use in buildings. Consequently, a number of policy measures have been implemented in European Member States to drive the market towards Nearly Zero-Energy Buildings, including the Energy Performance of Buildings Certificates (EPCs), which are the most visible instrument of the Energy Performance of Buildings Directive (EPBD).
Submitted by Maria.Kapsalaki on Wed, 09/06/2017 - 17:22
This Ventilation Information Paper analyses both the policy instruments used (regulatory requirements and incentives, specific programme requirements, quality frameworks for testers and builders) and the changes observed in practice in terms of building and ductwork airtightness over the past 5 years, using as reference mostly publications from AIVC and TightVent led events. Although we have not restricted our literature review to specific parts of the world, the majority of the publications we found come from Europe and the USA.
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