ventilation

8 April 2021 – Upcoming Webinar "IAQ and Ventilation Metrics"

The Air Infiltration and Ventilation Centre and the IEA EBC Annex 86 “Energy Efficient Indoor Air Quality Management in Residential Buildings” (https://annex86.iea-ebc.org/) are organizing the webinar IAQ and Ventilation Metrics to be held on April 8th, 2021 at 09:00-10:30 CET. The webinar will discuss the road towards a robust comprehensive IAQ metric for the assessment of the performance of ventilation.

Presentations & Speakers

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8 April 2021, Webinar – IAQ and Ventilation Metrics

Submitted by on Tue, 02/23/2021 - 10:35

The AIVC in collaboration with IEA EBC Annex 86 organized a workshop consisting of a series of four webinars on:

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REMARK: This Q&A was part of the AIVC special COVID-19 newsletter published in February 2021. To subscribe to the newsletter please click here.

REMARK: This Q&A was part of the AIVC special COVID-19 newsletter published in February 2021. To subscribe to the newsletter please click here.

No. Ventilation is air exchange between inside and outside. It dilutes the concentration of contaminants, and hence helps to control aerosol-based cross-infection risk of COVID-19.

REMARK: This Q&A was part of the AIVC special COVID-19 newsletter published in February 2021. To subscribe to the newsletter please click here.

No. One cannot rely solely on a strategy of dilution through building ventilation to reduce the risk of COVID-19 transmission to a low level.

REMARK: This Q&A was part of the AIVC special COVID-19 newsletter published in February 2021. To subscribe to the newsletter please click here.

We don’t know. There is no universal answer applicable for all scenarios.

Feedback from the AIVC Webinar “COVID-19 Ventilation related guidance by ASHRAE and REHVA"

On November 20th 2020, the Air Infiltration and Ventilation Centre  with support from ASHRAE and REHVA organized the webinar “COVID-19 Ventilation related guidance by ASHRAE and REHVA". 406 people from 42 countries attended the webinar.

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REMARK:  The answers that follow were developed in November 2020. The recommendations by ASHRAE and REHVA may change over time.

Energy aspects and ventilation of food retail buildings

Submitted by on Thu, 02/13/2020 - 11:03

Worldwide the food system is responsible for 33% of greenhouse gas emissions. It is estimated that by 2050, the total food production should be 70% more than current food production levels. In the UK, food chain is responsible for around 18% of final energy use and 20% of GHG emissions. Estimates indicate that energy savings of the order of 50% are achievable in food chains by appropriate technology changes in food production, processing, packaging, transportation, and consumption.

Experimental Study of an Integrated System with Diffuse Ceiling Ventilation and Thermally Activated Building Constructions

Submitted by on Wed, 02/12/2020 - 12:17

The experiments are carried out in a climate chamber located at the Department of Civil Engineering Aalborg University. The objective of the experiments is to evaluate the performance of the system combining diffuse ceiling ventilation and thermally activated building construction (TABS) in terms of thermal comfort and energy performance. 20 cases with different boundary conditions are conducted varying on climate condition heat load. TABS water temperature and flow rate with or without diffuse ceiling.

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