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ACU-VENT

IT BZ L14 ACU-VENT: Ein Pilotprojekt über die Wechselwirkung zwischen Gebäudebelüftung, Geräuschkulisse in Wohngebäuden und Wohlbefinden der Bewohner.

ACU-VENT project aims to: 1) develop a methodology for assessing the indoor soundscapes in residential buildings that defines the requirements and methods for measuring the physical environment and occupants' perception, through collaboration with international experts in academia (Prof. Jian Kang, University College London), design and policy making; 2) evaluate key factors and their influence on the quality of the soundscape in residential buildings with natural and mechanical ventilation in an acoustic comfort model, thorugh a summer monitoring campaign in London. The methodology will be replicable in future large-scale projects, in South Tyrol as well as in national and international contexts, in order to support the adoption of natural ventilation as a passive cooling and ventilation technology for sustainable and comfortable buildings.

Project duration: May 2022 - November 2022
Project status:
Funding:
Provincial P.-L.P. 14. Mobility (Province BZ funding /Project)
Institute: Institut für Erneuerbare Energie

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Scientific Publications

Journal article2024

Factors influencing window opening behavior and mechanical ventilation usage during summertime: A case study in UK dwellings

Torresin S, Aletta F, Oberman T, Albatici R, Kang J

The study presents findings of a data collection campaign conducted in 61 residential buildings in England during the summer of 2022, aiming to investigate the factors influencing 1) window usage, and 2) activation and deactivation of mechanical ventilation systems, and 3) the correlation between the residential soundscape, landscape, individual noise sensitivity, and the significance attributed to the external acoustic environment in determining window usage. The survey, covering 55 dwellings reliant on windows for ventilation, highlights that window opening is predominantly driven by perceived indoor air quality (PIAQ) and thermal comfort concerns. Conversely, the acoustic factor ranks first in prompting window closure, alongside considerations related to perceived cold, safety concerns, excessive drafts, and insect intrusion. Within the 6 dwellings utilizing manually controlled mechanical ventilation, ventilation needs emerges as the predominant factor triggering system activation, followed by considerations related to thermal comfort and PIAQ. Reasons for system deactivation primarily involve a preference for window opening, excessive drafts, and, secondarily, excessive noise or thermal discomfort, with participant-voiced concerns about operational costs. The significance attributed to the external acoustic environment in determining window usage is mainly independent of perceived sound sources, measured loudness, or soundscape content. However, higher acoustic comfort scores correlate with a greater willingness to open windows for an acoustic contact. Interestingly, noise sensitivity modulates the importance attached to the external acoustic context when interacting with the window (odds ratio: 1.04). The study underscores the need of incorporating noise sensitivity as a relevant individual factor in models simulating window closing behaviour.

DOI Quelle

DOI: 10.1016/j.buildenv.2024.111880

Journal article2023

Measuring, representing and analysing indoor soundscapes: A data collection campaign in residential buildings with natural and mechanical ventilation in England

Torresin S, Aletta F, Oberman T, Vinciotti V, Albatici R, Kang J

A model for the assessment of perceived affective quality of indoor residential soundscapes is first applied in a field survey carried out in 61 dwellings in England. Objectives are i) to investigate measurement and indoor soundscape data representation, ii) to characterize soundscape appropriateness for home working and relaxation, iii) to test differences based on the ventilation strategy, and iv) to identify factors predicting indoor soundscapes. In dwellings with natural ventilation (N = 34) the survey was carried out with windows open, while in those with mechanical ventilation (N = 27) with windows closed and the system in operation. Parallel to the administration of the questionnaire, monaural and binaural measurements of the acoustic environments were performed. The study provides examples of data representation in the circumplex space defined by comfort and content dimensions. Soundscapes which are appropriate for work and relaxation are characterized by high comfort and low content, i.e., perceived as private and under control. Indoor soundscapes are strongly related to the perception of traffic noise, window opening, and sound pressure level, especially in the energy content of interference in speech perception through the Speech Interference Level parameter (SIL), factors that lead to reduced comfort and increased saturation of the environment. Moreover, aspects related to psychoacoustics (sharpness), contextual and building-related factors (ownership status and floor level) and cross-modal effects from other sensory modalities (perceived air quality and air temperature) have an impact. A threshold value of 32.7 dB for SIL was identified at which a neutral comfort is attained.

DOI Quelle

DOI: 10.1016/j.buildenv.2023.110726

All Publications

Factors influencing window opening behavior and mechanical ventilation usage during summertime: A case study in UK dwellings
Torresin S, Aletta F, Oberman T, Albatici R, Kang J (2024)
Elsevier BV
Zeitschriftenartikel
Building and Environment

Weitere Informationen: http://dx.doi.org/10.1016/j.buildenv.2024.111880

https://doi.org/10.1016/j.buildenv.2024.111880

Measuring, representing and analysing indoor soundscapes: A data collection campaign in residential buildings with natural and mechanical ventilation in England
Torresin S, Aletta F, Oberman T, Vinciotti V, Albatici R, Kang J (2023)
Elsevier BV
Zeitschriftenartikel
Building and Environment

Weitere Informationen: http://dx.doi.org/10.1016/j.buildenv.2023.110726

https://doi.org/10.1016/j.buildenv.2023.110726

Project Partners

UCL Institute for Environmental Design and Engineering

Project Team

Roberto Lollini

Technische
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Journal article2024

Factors influencing window opening behavior and mechanical ventilation usage during summertime: A case study in UK dwellings

Torresin S, Aletta F, Oberman T, Albatici R, Kang J

DOI Quelle

DOI: 10.1016/j.buildenv.2024.111880

ACU-VENT

IT BZ L14 ACU-VENT: Ein Pilotprojekt über die Wechselwirkung zwischen Gebäudebelüftung, Geräuschkulisse in Wohngebäuden und Wohlbefinden der Bewohner.

Scientific Publications

Factors influencing window opening behavior and mechanical ventilation usage during summertime: A case study in UK dwellings

Measuring, representing and analysing indoor soundscapes: A data collection campaign in residential buildings with natural and mechanical ventilation in England

All Publications

Project Partners

UCL Institute for Environmental Design and Engineering

Project Team

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Externe Inhalte

Scientific Publications

Factors influencing window opening behavior and mechanical ventilation usage during summertime: A case study in UK dwellings

Measuring, representing and analysing indoor soundscapes: A data collection campaign in residential buildings with natural and mechanical ventilation in England

All Publications

Project Partners

UCL Institute for Environmental Design and Engineering

Project Team