Submitted by Maria.Kapsalaki on Fri, 09/12/2014 - 08:04
While it is generally accepted that a ventilation system in a building—whether natural, mechanical or hybrid—is needed to provide acceptable indoor air quality and prevent building damage, there are debates about the actual performance of these systems and how the deviations observed affect the overall buildings performance and the well-being or safety and health of the occupants. These debates are increasingly active given the sensitivity of new and renovated buildings on energy use and indoor air quality depending on the field characteristics of ventilation systems.
The 1st international QUALICHeCK Conference “Towards improved compliance and quality of the works for better performing buildings” will take place in the KBC auditorium: Havenlaan 2, 1080 Brussels, Belgium.
The event represents the main physical opportunity to expand dialogue on compliance and quality issues for energy efficiency in buildings, with the initial QUALICHeCK project findings as one of the starting points for discussion.
Core themes include ventilation, airtightness and ventilative cooling
Submitted by Maria.Kapsalaki on Tue, 08/19/2014 - 18:04
The proceedings of the seventh AIVC Conference contain 16 papers and 5 posters as follows: Requirements for adequate and user-acceptable ventilation installations in dwellings; Ventilation air infiltration and building occupant behaviour; A preliminary study of window opening in 18 low energy houses; Occupants' influence on air change in dwellings; The influence of occupant behaviour on indoor air quality - a case study; Ventilation and occupant behaviour in two apartment buildings; Inhabitant behaviour with regard to mechanical ventilation in France; Ventilation heating system of small hou
The 2013 Conference of the Air Infiltration and Ventilation Centre, AIVC, was organized together with the 2nd Cool Roof Conference and the 1st Venticool Conference in Athens, Greece during September 2013. The theme of the Conference was ‘Energy Conservation Technologies for Mitigation and Adaptation in the Built Environment’. Almost 240 papers were selected and presented, describing the state of the art on ventilation, passive and low energy cooling, energy efficiency, urban energy problems and solutions, and cool roofs.
Submitted by Maria.Kapsalaki on Tue, 08/19/2014 - 10:35
Night ventilation has been applied successfully to many passively-cooled or low-energy office buildings. This paper analyses the thermal comfort achievable in office buildings in Spain according to European standard EN 15251:2007. Furthermore, the comfort level is evaluated using the Degree Hours (DH) criteria and the maximum indoor temperature.
Submitted by Maria.Kapsalaki on Tue, 08/19/2014 - 10:34
The thermal comfort of the “Home for Life” dwelling in Denmark, the “LichtAktiv Haus” in Germany and “Sunlighthouse” in Austria is investigated with a particular focus on the control strategies and the role of solar shading and natural ventilation (ventilative cooling). These houses are three of six buildings in the Model Home 2020 project (Feifer, 2013). They have generous daylight conditions, and are designed to be energy efficient and CO2 neutral with a good indoor environment.
Submitted by Maria.Kapsalaki on Tue, 08/19/2014 - 10:32
According to researchers, climate change is inevitable in the 21st century. As far as Greece is concerned, this climate change will be related to an increase in ambient surface temperature and to a decrease in annual precipitation. On the other hand wind patterns will not change significantly. Also, no significant changes are expected for global solar radiation. Regional climate models related to Greece show low uncertainties. The climate of Greece is typical Mediterranean with wet, cool winters and hot, dry summers.
Submitted by Maria.Kapsalaki on Tue, 08/19/2014 - 10:31
Non-invasive, scalable, building retrofit solutions are very attractive deep renovation techniques to improve energy efficiency in existing buildings; this includes natural ventilation for cooling due to the low impact nature of the installation. However, a number of criteria that are important to natural ventilative cooling strategies can be substantially altered as a result of an external retrofit solution.
Submitted by Maria.Kapsalaki on Tue, 08/19/2014 - 10:29
The indoor environmental quality and health of occupants in approximately 5000 dwellings were investigated by questionnaire covering the whole of Japan. The purpose of this survey was to clarify the association between indoor air quality and adverse health effects and to study effective ways of keeping indoor air clean using mechanical ventilation. Questionnaires were distributed to 7812 occupants living in mechanically ventilated houses across 47 Prefectures in Japan in February 2012 of which 5265 occupants replied.
Submitted by Maria.Kapsalaki on Tue, 08/19/2014 - 10:28
Envelope airtightness is incorporated in the French Energy Performance (EP) Regulation (named “RT”) and is a key factor in the reduction of energy consumption. From 2006 until 2012, the French 2005 Energy Performance Regulation (RT, 2005) did not require justification of envelope airtightness. However, constructors could get certification for airtightness through a quality management (QM) approach, in order to build better-than-regulatory buildings.
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