Relationship Between IAQ And Indoor Temperatures Of Different Dwellings In A Temperate Climate During A Pandemic Summer

This paper investigates the relationship between indoor air quality (IAQ) and overheating in a temperate climate in Spain (Cfb attending to Koppen-Ggeiger classification), in dwellings located in residential buildings and without cooling systems.

Impact of ventilation non conformities: calculation methodology and on-site examples

Energy efficient buildings are getting more and more airtight to avoid thermal losses through uncontrolled air leakage and rely more and more on mechanical ventilation to ensure a good indoor air quality. In practice ventilation systems are however not always perfectly installed, and several problems are often encountered on-site. 
In France the new environmental regulation for new buildings RE2020 now includes a mandatory inspection of ventilation systems for non-residential buildings.  

Ductwork leakage: practical estimation of the impact on the energy overconsumption and IAQ

In a context of energy savings, new buildings are becoming more and more airtight. The good indoor air quality (IAQ) relies therefore more and more on mechanical ventilation systems with specific air flowrates to be met. However, in practice, ventilation ductworks are not always very airtight. The numerous issues induced by leaky ductwork have been well outlined in the literature and summed up in (Leprince et al., 2020). Yet the awareness is not forthcoming, and on-site workers do not always realize the consequences of ductwork leakages. 

Supply air filtration and fine particle levels in indoor air of occupied dwellings

Indoor Air quality (IAQ) of dwellings is the result of several sources and processes, and the impact of ventilation system is the one amongst many others. Definition and metrics of IAQ are several and we choose in this study to focus on airborne particle levels. Our question was: How the filtration of supply air impacts particle levels in indoor air?  

RENOVAIR : a study of the evolution of airtightness, ventilation, comfort and indoor air quality in energy efficient refurbishment social housing operations in France

Many European programs offer eco-conditioned financial aid to support public policies for the decarbonization of buildings. This is the case, for example, of the 2017-2022 ERDF Operational Program, which financially assists social project management for energy efficient refurbishment operations of its building stock. The eligibility conditions for financial aids concern the energy consumption, the thermal insulation performance of the building envelope and the energy efficiency of heating, cooling and ventilation systems.

Regulating Indoor Contaminants With Benjamin Jones

Benjamin Jones, Dr.Eng., spoke with ASHRAE’s Technical Editor Rebecca Matyasovski about a proposed addendum to Standard 62.2 that considers harm as a basis of regulating contaminants in homes. He also talked about how this type of addenda could be used in other indoor spaces and by other organizations—and why you should always turn on your range hood.

English

Feedback from the AIVC & ASHRAE Webinar "Sleeping Environment IAQ and Sleep Quality"

The recordings and the slides of the AIVC & ASHRAE Webinar: "Sleeping Environment IAQ and Sleep Quality" are now available online here.

The full collection of past events’ recordings and slides can be found here.

English

ASHRAE Commits to Developing an IAQ Pathogen Mitigation Standard

On December 7, 2022 ASHRAE’s board of directors announced its commitment to support the expedited development of a national indoor air quality (IAQ) pathogen mitigation standard. The goal is to finalize the consensus-based, code enforceable standard within six months.

English

Upcoming AIVC/ASHRAE webinar "Sleeping Environment IAQ and Sleep Quality", 12 January 2023

The AIVC is inviting you to register for the webinar "Sleeping Environment IAQ and Sleep Quality" to be held on January 12th, 2023 (10:00 - 11:30 CET).  Participation is free for all, but prior registration is required.

Programme (CET)

English

12 January 2023, Webinar – Sleeping Environment IAQ and Sleep Quality

Our bodies need good rest and sleep as part of regular recuperation to enable us to perform our normal activities in life.  Sleep is an integral part of human life and the importance and significance of good bedroom IAQ, indoor air pollution, ventilation as well as bedroom thermal environment during sleep cannot be emphasized more. Yet, there is a paucity of information in the scientific literature in this regard, especially pertaining to IAQ in sleeping environments and sleep quality.  Are our bedrooms adequately ventilated at all times to maintain good IAQ?

English

Pages