We are pleased to announce that the AIVC 2022 Conference “Ventilation Challenges in a changing world" is now accepting abstracts & proposals for topical sessions. The Conference will be held on October 5-6, 2022, at the Hilton Hotel, in Rotterdam, the Netherlands. It will be a joint event combined with the 10th TightVent and the 8th venticool conferences.
Submitted by Maria.Kapsalaki on Wed, 11/24/2021 - 10:17
The 42nd AIVC conference: "Ventilation Challenges in a Changing World" was held in the city of Rotterdam, the Netherlands together with the 10th TightVent and the 8th venticool conferences on October 5-6, 2022.
Submitted by Maria.Kapsalaki on Thu, 01/28/2021 - 18:04
Purpose of the work
The pressure differential at the building envelope results from wind pressure and thermal lift. European and German standards include in the calculation of corresponding infiltration the parameters wind speed, temperature differential, and the wind pressure coefficient from building inflow and outflow. This long-term measurement is to compare the calculations to the pressure differentials measured.
Submitted by Maria.Kapsalaki on Thu, 01/28/2021 - 18:01
Purpose of the work
What is the status quo of airtight building in Germany? Are we well on our way or still far from the target? What about measuring practice in Germany? Should we concentrate on the documentation of measurement results or is it more important to exert a positive influence on the building process overall? Which requirements and targets are set by the legislators, which by the development banks?
Submitted by Maria.Kapsalaki on Thu, 01/28/2021 - 17:57
Purpose of the work
By way of practical examples, the presentation shows that decentralized ventilation systems do neither make airtightness measurements more difficult nor distort them, and despite the requirements for a high level of airtightness for buildings also ensure good indoor air quality.
Submitted by Maria.Kapsalaki on Thu, 01/28/2021 - 17:52
Purpose of the work
Over the past years, the industry has launched a great number of products facilitating the airtight installation of sanitary fixtures in the airtight building envelope. However, the pre-wall mounting racks of cisterns remain a “key point” for assessing the airtightness of pre-walls.
Method of approach
As part of the rehabilitation of an indoor swimming pool, “airtight” pre-wall mounting racks were developed and used. This was due to the flush buttons causing “seepage” of the compound seal.
Submitted by Maria.Kapsalaki on Thu, 01/28/2021 - 13:18
Purpose of the work
The German Industrial Standard DIN 4108-7 has been the standard to stipulate the requirements as well as recommendations for planning and implementing airtight construction for a long time (since 2001). However, the principles of airtight building have not yet been well established in general building practice.
Submitted by Maria.Kapsalaki on Thu, 01/28/2021 - 12:03
Purpose of the work
Many top-floor apartments and single-family homes from the ’80s and ’90s had been insulated in the roof area using aluminum-clad panels or PE foils and had frequently been covered with profiled wood. These buildings suffer from a significant lack of airtightness that can be retrofitted from the inside with a high technical quality. The improvement in airtightness achieved by this approach in most cases shows better results than a retrofit from the outside.
Submitted by Maria.Kapsalaki on Thu, 01/28/2021 - 11:47
Purpose of the work
Is it possible to estimate an air infiltration flow rate, based on infrared images?
Method of approach
Laboratory tests and numerical simulations
Content of the presentation
This paper discusses laboratory measurements on a small test house. IRT measurements and (de)pressurization tests were performed on different types of junctions, e.g. at the window-wall interface. The results were analysed by calculating the temperature factor, to compare IRT images from different joints.
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