Airbase publication

In this extended abstract, we introduce the new IEA EBC Annex on 'Energy Efficient IAQ Management in residential buildings'. In this Annex, we address a number of challenges in implementing smart IAQ management strategies. 

Annex 68 provided us with a general framework for integrated simulation and assessment of Energy Efficiency (EE) and chemical indoor air pollution. This framework can now be further extended to develop and assess a series of smart Indoor Air Quality (IAQ) management strategies. 

As the energy poverty cannot afford the energy expenditure, their indoor environmental quality (IEQ) was affected by diverse problems from low energy efficient residential buildings. Thus, it is important to identify IEQ of energy poverty`s residential buildings to improve their well-being. However, there is no specific and diverse data on the IEQ of energy poverty in low-income housing in South Korea due to the difficulty of reaching many households and managing an amount of survey data.

ASHRAE ’s Residential IAQ Guide, published in 2018, contains practical and actionable strategies directed at multiple audiences, including builders, designers, occupants, whether they rent or own, and managers of multifamily buildings. It does this while also providing a compendium of sound scientific information for professionals who specialize in IAQ, home energy, commissioning, and those who develop programs and standards intended to transform industry practices. 

The book of proceedings of the 13th International BUILDAIR Symposium "Airtight Buildings, Thermography and Ventilation Systems in Practice",  held on June 2-3  2023 in Hannover, Germany. Contains 36 abstracts.

Worldwide, the demand for airtightness tests of tall buildings with a height of approximately 100 m is increasing. This report provides information on the planning and measurement concept for testing the entire building as a “single-zone” and presents the results and findings of the airtightness tests. The test set-up and the tests as such are based on the Passive House Institute's Guide to Measuring Tall Buildings [5] which includes recommendations that go beyond the ISO 9972 standard.

Weltweit steigt die Nachfrage nach Luftdichtheitsprüfungen von hohen Gebäuden mit einer Höhe ab ca. 100 m. Dieser Bericht informiert über das Planungs- und Messkonzept zur Prüfung des gesamten Gebäudes als „Single-Zone“ und stellt die Ergebnisse und Erkenntnisse der Luftdichtheitsprüfungen vor. Der Prüfaufbau und die Prüfungen als solche basieren auf dem Leitfaden des Passivhaus Instituts zur Vermessung von Hochhäusern [5], der Empfehlungen enthält, die über die Norm ISO 9972 hinausgehen.

Purpose of the work 
According to the two Swiss building standards Minergie-P and Minergie-A, individual dwelling units are considered measuring zones for airtightness, irrespective of whether they are in a new, renovated or modernized building. The Minergie standards focus on comfort between the dwelling units and the energy losses caused by infiltration. 
Do zone measurements meet relevant requirements? Which requirements do the zone measurements fail to meet?

Ziel der Arbeit/Fragestellung 
Für die beiden schweizerischen Energiestandards Minergie-P und Minergie-A werden bei der Luftdichtheit die einzelnen Nutzeinheiten als Messzonen betrachtet, egal ob Neubau oder Erneuerung / Modernisierung. Im Vordergrund steht der Komfort zwischen den Nutzungseinheiten nebst den energetischen Verlusten durch Infiltration. 
Werden bei Zonenmessungen die Anforderungen eingehalten? Welcher Anteil erfüllt die Anforderungen nicht? 

Purpose of the work 
When dealing with very airtight buildings and buildings with flexible airtight roofing felts it might take several minutes for the differential pressure and air flow to level out after having changed the fan speed. Taking premature readings of the values causes measuring errors. The lecture provides pointers for test teams to avoid such measuring errors. 

Ziel der Arbeit/Fragestellung 
Bei sehr dichten Gebäuden und bei Gebäuden mit flexiblen Luftdichtheitsschichten kann es nach dem Verstellen des Ventilators Minuten dauern, bis sich der Differenzdruck und der Volumenstrom praktisch nicht mehr ändern. Zu frühzeitiges Ablesen der Werte führt zu Messfehlern. Der Vortrag gibt Handlungsempfehlungen für Messteams, durch die derartige Messfehler vermieden werden.  

Methode der Herangehensweise