The indoor thermal comfort and air quality in classrooms have become of interest worldwide, predominantly because of their influence on children’s health, learning performance and productivity.
40th AIVC - 8th TightVent - 6th venticool Conference - Ghent, Belgium - 15-16 October 2019
The 40th AIVC Conference "From energy crisis to sustainable indoor climate - 40 years of AIVC", was held in Ghent, Belgium, 15-16 October 2019. Contains 128 papers and/or summaries.
Enhancing thermal comfort and indoor air quality in Australian school classrooms | 2019 | English | 8 pp
Indoor air and environmental quality in social housing dwellings in Australia | 2019 | English | 8 pp
This study aims to assess the indoor thermal and environmental quality of low-income households in New South Wales, Australia.
In Switzerland, 70 % of building refurbishments are realised in stages. When only a window replacement is done, the new airtight windows can lead to a reduced infiltration air exchange and subsequently there may be moisture issues, e.g. mould.
Radiant Heating and Cooling Systems Combined with Displacement Ventilation in Schools; Strategies to Improve IAQ | 2019 | English | 9 pp
The new schools in Canada are designed to improve indoor environment quality while achieving a much better energy performance than the code compliance requirements.
The evaluation of real-time indoor environment parameters measured in 297 Chilean dwellings | 2019 | English | 10 pp
People spend the majority of their time in their own homes and so the indoor environmental conditions are an important determinant of population health and wellbeing and have economic consequences.
As newer homes are being built tighter than the existing housing stock, questions have been raised about the concentrations of pollutants of concern in new homes and how mechanical ventilation systems can address this issue.
Influence of the external pressure tap position on the airtightness test result | 2019 | English | 2 pp
Due to the wind induced pressure, different results may be obtained if the inside-outside pressure difference is measured across different locations on the building envelope, i.e.
Airtightness of buildings – Considerations regarding place and nature of pressure taps | 2019 | English | 7 pp
This paper discusses two particular points of the buildings airtightness measurement method (ISO 9972) in relation with the pressure difference: (1) the nature of the pressure tap and (2) the place of the pressure tap outside.
Quantification of uncertainty in zero-flow pressure approximation due to short-term wind fluctuations | 2019 | English | 12 pp
Uncertainties in airtightness measured using fan pressurization test should not be defined by the scattering of the points around the line defined using ordinary least square method anymore.
Designing a model-scale experiment to evaluate the impact of steady wind on building air leakage measurements | 2019 | English | 6 pp
Since the 1970s, many authors have discussed the impact of poor airtightness on building energy use, indoor air quality, building damage, or noise transmission.
CFD modelling of fan pressurization method in buildings – The impact of dynamic wind on airtightness tests | 2019 | English | 1 pp
Building airtightness tests have become very common in several countries, either to comply with minimum requirements of regulations or programs, or to justify input values in calculation methods.
This overview focuses on model based control strategies for ventilation in nearly zero energy buildings (nZEB) where slower reactions towards disturbances are expected as a result of high insulation and air tightness of the building envelope (Kill
Predictive control for an all-air ventilation system in an educational nZEB building | 2019 | English | 10 pp
In school and office buildings, the ventilation system has a large contribution to the total energy use. A control strategy that adjusts the operation to the actual demand can significantly reduce the energy use.
From a product point of view, today’s state-of-the-art ventilation boxes for residential buildings are generally reliable, efficient and silent according to formal European and national product standards.
A case study on residential mixed-mode ventilation using the Ventilation Controls Virtual Test Bed | 2019 | English | 10 pp
Mixed-mode ventilation uses intelligent switching between natural and (partly) mechanical ventilation modes to find the best possible balance between indoor air quality, user comfort and energy consumption.
Using co-simulation between EnergyPlus and CONTAM to develop IAQ and energy-centric demand-controlled ventilation systems | 2019 | English | 11 pp
Buildings account for approximately 40 % of energy use in the European Union, as well as in the United States.
Performances of a demand-controlled mechanical supply ventilation system under real conditions: indoor air quality and power distribution for thermal comfort | 2019 | English | 10 pp
This study aims to evaluate the performances of a VMI, a demand-controlled mechanical supply ventilation system, in an experimental house, in terms of indoor air quality (IAQ), energy performance and thermal comfort.
Large-scale performance analysis of a smart residential MEV system based on cloud data | 2019 | English | 15 pp
This study is a first large-scale analysis of the performance of a cloud connected and smart residential mechanical extract ventilation (MEV) system based on field data.
Individualised Dynamic Model-Based Monitoring of Occupant’s Thermal Comfort for Adaptive HVAC Controlling | 2019 | English | 10 pp
Thermal comfort and sensation are important aspects of the building design and indoor climate control as modern man spends most of the day indoors.
Assessment of long-term and mid-term building airtightness durability: field study of 61 French low energy single-family dwellings | 2019 | English | 12 pp
The French ongoing research project “Durabilit'air” (2016-2019) aims at improving our knowledge on the variation of buildings airtightness through onsite measurement and accelerated ageing in laboratory controlled conditions.