LoginAirtightness becomes a more and more important parameter in the rationalization of the energy consumption. The quality of the works during the construction process is essential.
35th AIVC - 4th TightVent - 2nd venticool Conference - Poznań, Poland - 24-25 September 2014
The 35th AIVC Conference " Ventilation and airtightness in transforming the building stock to high performance", was held in Poznań, Poland, 24-25 September 2014. Contains 86 papers.
Volume content
Ventilative cooling in national energy performance regulations: Requirements and sensitivity analysis | 2014 | English
Higher insulation and air tightness levels of buildings, increase the risk on overheating. Ventilative cooling as passive technique can limit overheating and decrease cooling energy consumption.
Estimating the impact of incomplete tracer gas mixing on infiltration rate measurements | 2014 | English
The mixing of a tracer gas with zonal air was compared between two zones in an unoccupied test building in both the horizontal and vertical direction.
Simulation of night ventilation performance as a support for an integrated design of buildings | 2014 | English
Passive cooling by night ventilation is one of the most promising approaches to reduce cooling energy demand of office buildings in moderate climates. However, the effectiveness of this system depends on many parameters.
Traffic emissions have a significant impact on urban air quality, which particularly concerns street canyons, i.e. spaces with limited air exchange. Traffic emissions in street canyons create high concentrations of air pollutants.
Air leakages in a retrofitted building from 1930: measurements and numerical simulations | 2014 | English
Many buildings in Sweden are in need of renovation in order to meet the current standards of energy use in buildings.
Implementation and performance of ventilation systems: first review of voluntary certification controls in france | 2014 | English
A voluntary certification for very low energy buildings has been implemented in 2013 in France, which requires among other the ventilation systems to be controlled by an independent technician.
When one intends to evaluate buildings energy efficiency their airtightness is a fundamental parameter. Airtightness is linked to undesirable and uncontrolled ventilation and, therefore, should be minimized.
A protocol for assessing indoor air quality in retrofitted energy efficient homes in Ireland | 2014 | English
In recent years there has been much emphasis on improving the energy performance of Irish buildings.
Variable air volume (VAV) ventilation systems reduce fan power consumption compared to constant air volume (CAV) systems because they supply air according to the airflow demand.
Reducing cooling energy needs through an innovative daily storage based facade solution | 2014 | English
The framework of the research presented in the paper is a project oriented to promote the use of concrete solutions in buildings based on maximizing the benefits of its thermal inertia for cooling periods.
The airtightness test of the building is one of a few building envelope measurements used in practice, which is quantitative, not just qualitative as e.g. infrared thermography.
As the benefit of natural ventilation in reducing operational cost is well recognised, the concept of natural ventilation is becoming more received by residents and designers alike.
Multi-pipe earth-to-air heat exchanger (EAHE) geometry influence on the specific fan power (SFP) and fan energy demand in mechanical ventilation systems | 2014 | English
The energy efficiency and energy consumption of mechanical ventilation systems depend mainly on the heat and cool recovery efficiency and the operational costs of electric energy for air handling unit fans.
The aim of the project was to evaluate how the air tightness of buildings changes over time and how the sealing materials are affected during the expected life length of 50 years.
Strategies for exploiting climate potential through ventilative cooling in a renovated historic market | 2014 | English
Nearly all retail locations use ventilation and cooling systems to ensure adequate air exchange for health reasons and indoor comfort temperatures.
Energy performance of mechanical ventilation systems in modern low energy and passive buildings is a crucial factor influencing overall energy performance of building.
A nozzle pulse pressurisation technique for measurement of building leakage at low pressure | 2014 | English
Air tightness is essential to building energy performance, which has been acknowledged for a long time.
Impact of the use of a front door on thermal comfort in a classroom in a passive school | 2014 | English
A new school building block in Passivehouse standard near Kortrijk (Belgium) is in use since spring 2013. The urban development regulations required that this new building did not influence the incidence of daylight in the adjacent dwellings.
Can air heating alone be used in passive house office building in cold climates? Review of the obtained results | 2014 | English
The future is well-isolated buildings with low heating demand. The first office building in Norway satisfying the passive house standard, the GK environmental house in Oslo, was taken into use in August 2012.