TN 70: 40 years to build tight and ventilate right: From infiltration to smart ventilation

As the AIVC was created in 1979, the 40th anniversary of the AIVC was celebrated in October 2019 at the 40th AIVC conference in Ghent. In the context of this celebration, it was decided to publish 2 overview publications:

TN 71: Durability of building airtightness

Much progress has been made to improve the airtightness level of new buildings. Still, little is known about the durability of building airtightness, or the impact of degradation on airtightness. This report presents a comprehensive review of studies that deal with building airtightness durability. Regarding field measurement studies, the envelope airtightness seems to decrease during the first years after achievement and then stabilize. However, these variations are rarely explained. Key elements that may drive airtightness variations were identified.

VIP 39: A review of performance-based approaches to residential smart ventilation

Ventilation Information Paper no39: “A review of performance-based approaches to residential smart ventilation” provides an overview of the regulations and standards proposing “performance-based approaches” in five countries to promote the use of smart ventilation strategies. It shows that a favorable context exists in many countries for the development of smart ventilation strategies.

VIP 38: What is smart ventilation?

In March 2017, AIVC identified smart ventilation for buildings as a new and important topic to be addressed.

Several actions were defined by AIVC Board about this topic in order to exchange and disseminate information on this topic. A working group of AIVC experts from several countries was created. One of its tasks was to agree on a definition of smart ventilation.

The purpose of this ventilation information paper is to present and illustrate this definition of "smart ventilation".

TN 68: Residential Ventilation and Health

Exposures in homes constitute the major part of exposures to airborne pollutants experienced through the human lifetime. They can constitute from 60 to 95% of our total lifetime exposures, of which 30% occurs when we sleep.

VIP 45.9: Trends in building and ductwork airtightness in Japan

AIVC's Ventilation Information Paper #45.9 summarizes current knowledge on trends in building and ductwork airtightness in Japan.

LL 37: Overview of Webinars in cooperation with TightVent Europe and venticool platforms

The AIVC (Air Infiltration and Ventilation Centre), TightVent Europe (the building and ductwork airtightness platform) and venticool (the platform for resilient ventilative cooling have organised during the past 11 years 49 webinars around a wide range of topics. The main topics of the events held include:

VIP 47: High-rise buildings airtightness – error due to stack effect on point measurements

AIVC's Ventilation Information Paper #47 gives guidance to perform a pressurization test in high-rise buildings and suggests new criteria to replace standard requirements when they cannot be met.

VIP 46: Building airtightness impact on Energy Performance (EP) calculations

Many simplified models have been developed and are used around the world to estimate the infiltration rate for Energy Performance (EP) calculations, with different levels of accuracy, as described below. For example, the wind velocity can be estimated hourly, monthly or annually; based on the local climate or fixed estimated values; with or without taking into account shielding factors; etc.

AIVC's Ventilation Information Paper #46 aims to explain these simplified models and give some examples of methodologies applied in various countries.

VIP 45.8: Trends in building and ductwork airtightness in China

AIVC's Ventilation Information Paper #45.8 summarizes current knowledge on trends in building and ductwork airtightness in China.

 

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