Testing for building components contribution to airtightness assessment

When one intends to evaluate buildings energy efficiency their airtightness is a fundamental parameter. Airtightness is linked to undesirable and uncontrolled ventilation and, therefore, should be minimized. Quantitative characterization of expected leaks of common building elements would be useful for practitioners that intend to improve building enclosures for airtightness optimization. The most well accepted experimental procedure to evaluate in-situ buildings’ airtightness is the fan pressurization method, typically making use of a “blower door” device.

A nozzle pulse pressurisation technique for measurement of building leakage at low pressure

Air tightness is essential to building energy performance, which has been acknowledged for a long time. It plays a significant role in improving building energy efficiency by minimising the heating/cooling loss incurred during unwanted air movement through the building envelope, consequently reducing the building’s energy demand and cutting down carbon emission in the building sector.

PROMEVENT: Improvement of protocols measurements used to characterize ventilation systems performance

For the coming energy-efficient buildings, the guarantee of energy performance becomes a major challenge. It is therefore crucial to implement accurate and reliable measurements, in order to ensure this performance. The in-force French EP-regulation RT2012 already imposes compulsory justification of envelope airtightness. Moreover, the Effinergie+ label requires ventilation systems control and ductwork airleakage performance. These requirements, ventilation controls for IAQ concern and regulatory compulsory controls of buildings need reliable diagnostic protocols.

Airtightness testing part 3: Status and trends in competent tester schemes in Denmark, Ireland and Sweden

20 November 2014 |  Airtightness testing part 3: Status and trends in competent tester schemes in Denmark, Ireland and Sweden

Airtightness testing part 2: Status and trends in competent tester schemes in Germany, the Czech Republic and France

22 November 2013 | Airtightness testing: status and trends in competent tester schemes in Germany, the Czech Republic and France

Airtightness Testing part 1: Status and trends in competent tester schemes in the UK and Belgium

14 November 2013 | Airtightness testing: status and trends in competent tester schemes in the UK and Belgium

The need for structured air leakage databases in energy conservation in buildings policies

25 May 2012 | The need for structured air leakage databases in energy conservation in buildings policies

Achieving better envelope in practice – Norway

9 November 2011 | Achieving better envelope in practice - Norway. Recent Norwegian training and dissemination schemes

PROGRAMME

Airtightness and ventilation perspectives in Romania

21 June 2011 | Airtightness and ventilation perspectives in Romania. European context, regulation changes and progress needed

PROGRAMME

Numerical evaluation of the airtightness impact on energy needs in mechanically ventilated dwellings

With the increasing need for higher energy efficiency in buildings, airtightness and ventilation systems choice become major performance issues in well insulated buildings. Buildings energy requirements lead to adapt ventilation strategies in order to reduce energy losses through mechanical balanced or extract ventilation. With the new French thermal regulation, the use of energy-efficient ventilation systems is implicitly required; low air infiltration is explicitly required in residential buildings through minimum airtightness levels.

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