In low energy buildings and passive houses due to very low heating demands integrated heating and ventilation (VAV or DCV) systems are used to provide proper indoor climate conditions – thermal comfort and indoor air quality.
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.
System for controlling variable amount of air ensuring appropriate indoor air quality in low-energy and passive buildings | 2014 | English
Development of an evaluation methodology to quantify the energy potential of demand controlled ventilation strategies | 2014 | English
Demand controlled ventilation (DCV) is seen more and more as a promising way to limit the energy consumption due to ventilation in buildings.
Mechanical positive input and extract ventilation are common strategies employed in English houses, generally because they provide adequate indoor air quality and specifically because they are effective at minimizing mould growth and its associate
We propose a new approach for measuring air infiltration rates in buildings.
The present study aims at investigating carbon dioxide (CO2) concentrations inside elementary schools’ classrooms and how students’ productivity is affected.
Cooking devices are a major source of contaminants in dwellings. They cause exposure to combustion products and vapors. The type and production rate of contaminants depend on the heating type (gas vs.
Coupling hygrothermal whole building simulation and air-flow modelling to determine strategies for optimized natural ventilation | 2014 | English
In both, newly built and renovated buildings the building air-tightness has to be ensured. With a tight building envelope comes a low infiltration air-exchange.
In the past, many churches were raised and in a church building no heating no heating system was installed, except a simple individual coal or peat stove, which could be rented by the churchgoers.
In Sweden, the energy usage in existing residential buildings amounted to 147 TWh in 2012, equivalent to almost 40 % of the final overall national energy usage.
Comparison of building preparation rules for airtightness testing in 11 European countries | 2014 | English
Mandatory building airtightness testing came gradually into force in the UK, France, Ireland and Denmark.
Breathing features assessment of porous wall units in relation to indoor air quality | 2014 | English
Traditional building technologies establishing highly-breathing multi-layered wall systems provide healthy indoor environment and energy efficiency in buildings due to the use of lightweight, porous, water vapour permeable and thermal resistive bu
Airtightness of building penetrations: air sealing solutions, durability effects and measurement uncertainty | 2014 | English
During field measurements on the airtightness of passive houses, ventilations system’s roof penetrations showed to be one of the major leakage paths, as they were not sealed using the appropriate, durable techniques.
Ductwork airtightness: reliability of measurements and impact on ventilation flowrate and fan energy consumption | 2014 | English
Reduction of energy consumption and green house gas emissions of buildings is a great challenge in Europe. In this context French energy performance regulation, RT2012, requires an improvement of the buildings' airtightness.
Monitoring the energy- & iaq performance of ventilation systems in dutch residential dwellings | 2014 | English
MONICAIR --MONItoring & Control of Air quality in Individual Rooms-- is a pre-competitive field research project of a broad consortium of Dutch ventilation unit manufacturers and research institutes, supported by the Dutch government.
Experiences in the airtightness of renovated tertiary exemplary buildings in the Brussels capital region | 2014 | English
In the “Exemplary Buildings” program of the Brussels Capital Region, building owners and designers are challenged to realise building projects of both high architectural quality and superior environmental performance.
Energy saving and thermal comfort in Residential buildings with dynamic insulation windows | 2014 | English
To realize the concept of low-energy buildings, an increase in the thermal insulation performance of building parts, especially the openings that show poor insulation performance, is necessary.
Passive Cooling Through Ventilation Shafts in High-Density Zero Energy Buildings: A Design Strategy to Integrate Natural and Mechanical Ventilation in Temperate Climates | 2014 | English
Zero Energy Buildings require airtightness and mechanical ventilation systems to provide air changes and energy saving. These requirements contrast with the principles of natural ventilation.
Co-heating test and comfort assessment of a coupled system made by a ventilated window and a heat recovery unit | 2014 | English
The article describes the results of an experimental campaign carried out at ITC-CNR in outdoor test cells to evaluate the energy performance and the related comfort level achieved through a coupled system made up of a dynamic window and a heat re
Assessment of the durability of the airtightness of building elements via laboratory tests | 2014 | English
The airtightness just after the end of a building phase is assumed to be relevant criteria for high energy performance. Testing on site the initial performance of the airtightness via the blower door test has become nowadays a common practice.
This paper presents the new framework for the realization of reliable pressurization tests in Belgium and the provisions taken to widen the number of buildings where a valid pressurization test can be realized.