Ventilative cooling is the use of natural or mechanical ventilation strategies to cool indoor spaces. It can significantly reduce the cooling energy demand in summer or mid-season conditions. Therefore, ventilative cooling is increasingly common in NZEBs.

This BUILD UP Web Seminar addresses:

• Challenges for ventilative cooling in the context of NZEB - the venticool platform;
• Potential energy savings and the new IEA EBC Annex 62 on ventilative cooling; and
• Case studies - demonstrated high level summer comfort in real buildings.

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 development of competent tester schemes to contain potential legal and competition issues.
The objective of this webinar was to give information on the status and trends in airtightness testing in the UK, Belgium,Germany, Czech Republic, France, Denmark, Ireland and Sweden including the details and feedback on competent tester schemes.

While building airtightness is a key concern in Nearly Zero-Energy Buildings in most European climates, there exists already a wide range of commercially-available products specifically designed to minimise leakage in building envelopes.
The objective of this webinar was to give information on the performance and properties of these products based on research including laboratory and field tests. The speakers also provided information on standards already published and under development on this subject.

While building airtightness is a key concern in Nearly Zero-Energy Buildings in most European climates, there exists already a wide range of commercially-available products specifically designed to minimise leakage in building envelopes.
The objective of this webinar was to give information on the performance and properties of these products based on research including laboratory and field tests. The speakers also provided information on standards already published and under development on this subject.

While building airtightness is a key concern in Nearly Zero-Energy Buildings in most European climates, there exists already a wide range of commercially-available products specifically designed to minimise leakage in building envelopes.
The objective of this webinar was to give information on the performance and properties of these products based on research including laboratory and field tests. The speakers also provided information on standards already published and under development on this subject.

The implementation of the EPBD recast puts increasing pressure on the market to achieve better building and ductwork airtightness: for most European climates and countries, good airtightness levels are necessary to achieve nearly zero-energy buildings. You will learn about legislative drivers that have brought to light new concerns and stimulated new initiatives. We will discuss recent trends in European regulations as well as field studies supporting the development of competent testing schemes. 

Recent Research and Characterisation of Sealants and Tapes 4 June 2013

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

Interlaboratory tests for the determination of repeatability and reproducibility of airtightness measurements.

Experimental study of supply-only ventilation effectiveness