LoginThe book of proceedings of the 10th International BUILDAIR Symposium "Airtight Buildings, Thermography and Ventilations Systems in Practice", held on March 31/ April 1, 2017, in Hannover, Germany. Contains 28 abstracts.
BUILDAIR Symposium 2017
This page lists the Proceedings (titles and abstracts) of the 10th International BUILDAIR Symposium, held on March 31/ April 1, 2017 in Hannover, Germany.
Contains 28 titles and abstracts.
Volume content
New developments in the field of airtightness measurements and airtightness designs in Switzerland | 2017 | English
I have already talked about the issue of airtightness designs in Swiss standards at the Buildair Conference in 2015. What are the challenges we are facing two years later, regarding airtightness in Switzerland? And which of the issues in this context could be of interest for other countries...
Based on the results of the FLiB e.V. research project „Evaluation of leakages in airtight layers – Recommendations for action for construction professionals”, testing methods in building practice for the detection, analysis, and evaluation of leakages are put up for discussion. One of the FLiB working groups has taken on the task of testing...
The significance of leakages – Problems of evaluation and recommendations for action. Results from the FLiB research project | 2017 | English
Airtightness/air permeability are inseparable from leakages and their detection, categorization, or evaluation. The diverse contexts due to the main construction methods, structures, materials used, individual conditions on site for each building, and the perspectives of the different disciplines regarding airtightness, make it hard to take quick...
As part of an airtightness test, you not only have to determine the air change rate and/or air permeability, but must also search for leakages. Extensive leakages must be documented. However, there are no regulations as to the method of leakage detection or the instruments that might be used. In comparison with traditional...
The natural pressure differential – Wind infiltration. Results from a long-term measurement | 2017 | English
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...
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...
During the construction of a building, decentralized ventilation systems were installed. The presentation shows the preparation of the building with sealing bladders by InVENTer and analyses a series of pressure differential measurements. The effectiveness of the ventilation system is documented wit CO2 measurements...
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. As part of the rehabilitation of an indoor swimming pool, “airtight”...
Ductwork and envelope leakage diagnostic, impact analysis and improvements in an airport control tower | 2017 | English
In an air traffic control tower, conditions for thermal comfort are crucial as the task of air traffic control requires high level of attention and vigilance. Comfortable conditions must be guaranteed all the time especially during extreme periods. Therefore, the HVAC system of a control tower is always composed by two, possibly three, identical...
Many ventilation systems do not work efficiently, because their airflow rates have not been correctly adjusted and due to leakages of the ventilation ducts and individual elements. Different measuring devices are used to evaluate and adjust the flow rates, to conduct airtightness tests with differential pressure measurements of ventilation...
The overall buildings leakage results from the sum of the individual contribution of its components. Quantifying this contribution would be of major importance for building designers that intend to improve building enclosures for airtightness optimization. Typically, building components airtightness is tested in laboratory but several examples...
For several years, multifunctional tapes have increasingly been used for the airtight installation of windows in new buildings or renovation projects. The adhesive tapes are wrapped around the window on three or four sides. After the installation of the window, the tape expands and closes the joints between window and reveal...
Zonal pressure testing of a dwelling and leakage evaluation – Experience with the thermal anemometer | 2017 | English
To describe the effectiveness of the thermal anemometer device in assisting airtightness testers to evaluate leakage zones, and specific leakages. There are two main aspects: While the building is pressurised to 50Pa use is made of internal doorways to close off each room to make a 'zone', and an airspeed reading is taken...
The information about uncertainly is essential to correct interpretation of any measurement. Therefore, several authors investigated the reproducibility and repeatability of airtightness measurement during the last years. The experiments were carried out in real buildings of different size and in actual climatic conditions which complicates the comparison...
The impact of leakages – Simulation calculations Results from the FLiB research project | 2017 | English
Part of the research project “Evaluation of leakages in airtight layers – Recommendations for action for construction professionals”, was visiting an object, where air leakages in the roof construction were identified as the cause for moisture damage in the roof structure. The latter was not back-ventilated and was characterized...
The purpose of the article is to introduce the condition of airtightness measurement market of large buildings in the Baltic states and in some European countries. There are also considered national building norms of envelope airtightness and measured values. Based on the measurement results of large buildings (more than 4,000 m3 volume according...
European standards or specific programmes rules describe ventilation airflow measurements at terminal devices according to different protocols. Experience shows that these protocols rarely address the assessment of uncertainties. The main goal of the Promevent project was to develop a reference protocol...
Improvement of buildings envelope airtightness in France: analysis of about 90,000 measurements performed by certified operators | 2017 | English
Since 2008 in France, all measurement of building envelope airtightness performed according to the EP-regulations have to be performed by a certified operator. This certification includes a yearly follow-up we use to build up a highly detailed database which includes data of about 90,000 airtightness measurements...
Spain is not a country whre airthightness is considered in building process. We still think on our spacial climate conditions (Mediterranean wheather) and still unknown all about thighness, sealing, leakages consecuences, etc. And this is also for residential or industrial buildings. This Spanish BlowerDoor Test Record will bring us the opportunity...