The 32nd AIVC and 1st TightVent Conference - Towards Optimal Airtightness Performance,  was held in Brussels, Belgium, 12-13 October 2011.

Contains 60 papers.

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The overarching objective of this study was to develop a numerical model based on computational fluid dynamics to predict aerosol concentration distributions in indoor environments.
Jun Narikawa, Cong Li, and Kazuhide Ito
Office buildings in Chile show higher cooling than heating energy demand. The climate of the country show important differences between cities by the ocean and those of interior regions, located between the coastal and the Andes range.
Waldo Bustamante, Felipe Encinas and Francisco Sánchez de la Flor
In many parts of Asia as typified by Japan, conditioning of the indoor thermal and air environments using natural ventilation since ancient times.
Tomoyuki Endo
As building insulation level increases, the coupling of ventilation systems with building enveloppe airtightness becomes an important issue in order to improve buildings energy performances.
Masy Gabrielle, Lebrun Jean, Gendebien Samuel, Nicolas Hansen, Marc Lengele, and Luc Prieels
When conducting airtightness tests of buildings, you must ensure that all building parts to be measured have air connection, so that the test object can be considered as one single zone.
Stefanie Rolfsmeier, Paul Simons
The issue of the uncertainty of building airtightness measurements has built up a greater importance since this topic was introduced in many regulations regarding the energy performance of buildings.
Christophe Delmotte, Jelle Laverge
The 2012 French thermal regulation will include a minimum requirement for residential buildings envelope airtightness, with two options to justify its treatment: a) measurement at commissioning or b) adoption of an approved quality management appr
Valerie Leprince, Rémi Carrié and Myriam Olivier
In 2002 the Association for Air Tightness in Buildings (FLiB e. V.) established a certification procedure for airtightness testers in Germany.
Oliver Solcher
Origins of toxic gas clouds may be diverse, including accidental releases due to industry or to hazardous materials transportation, or biological or chemical attacks.
M.I. Montoya, G. Guyot, E. Planas
The indoor environment can play a significant role in the transmission of and exposure to various contaminants.
Hiroaki Asanuma and Kazuhide Ito
It is essential to reduce the inordinate amount of energy used for climate control in buildings. To reduce heat loss in residential buildings, it is necessary to insulate building envelopes more airtight.
Shinsuke Kato, Sihwan Lee
Nowadays, indoor air quality has become a major concern. Regarding the fact that people spend most of their time indoors, it is necessary to study the performance of the ventilation system in order to limit the risks on occupants’ health.
Mireille Rahmeh, Claude Algourdin, Michèle Potard and Karim Limam
This paper examines two similar studies in Phoenix, Arizona and Houston, Texas that compared the actual energy performance of three classes of homes – ENERGY STAR®, Guaranteed Performance homes and Baseline homes (homes built using standard constr
Shaun Hassel, Jonathan Coulter, Ben Hannas
The objective of this study is to measure the impact of various classes of filters in the HVAC system on the IAQ in an office building.
Eva Rendek, Alain Ginestet, Dominique Pugnet
This article is devoted to Indoor Air Quality (IAQ) in two low energy houses, with different frames (cast concrete (I-BB) and timber frame (I-OB)) built in platform INCAS of INES (National Institute of Solar Energy -in french: Institut National de
Franck Alessi, Michael Sollaris
The objective of this paper is to summarize results of two studies that compared Baseline, ENERGY STAR® and Guaranteed Performance homes co-located in Phoenix, Arizona, USA and determine if homes in these three groups could be distinguished from e
Jonathan Coulter, Benjamin Hannas, Colby Swanson, Michael Blasnik and Eric Calhoun
In 1998, Persily published a review of commercial and institutional building airtightness data that found significant levels of air leakage and debunked the myth of the airtight commercial building. Since that time, the U.S.
Steven J Emmerich, Andrew K Persily
Air leakage and other diagnostic measurements are being added to LBNL’s Residential Diagnostics Database (ResDB). We describe the sources of data that amount to more than 80,000 blower door measurements.
Wanyu R. Chan and Max H. Sherman
This study presents some results from a monitoring project with night ventilation and earthto- air heat exchanger. Both techniques refer to air-based low-energy cooling.
Jens Pfafferott, Martin Fischer, Doreen E. Kalz
This paper focuses on ventilation solutions of a net zero energy building.
Oscar Hernandez, Francis Allard