Air quality study for an
office construction project

Objective: Identify design and ventilation choices with a significant impact on indoor air quality.

Context

The study

Building

Office construction project including an open space and a R&D area.
The offices are adjacent to a production area where particulate matter level measurements have been carried out.
The construction site is located in a area predominently covered by factories and offices.

Planned ventilation system

Double flow AHU.
Ventilation programmed solely on CO₂ levels.
Recirculation system in openspace only.

Study

1. La maquette

The building was modelled using INDALO® software.

2. Les simulations

The simulations were carried out over a period of 7 days to correspond to a typical week.

Have been added:

The materials, their age and furniture
Planned occupancy
The ventilation and recirculation system
The waterproofing of the walls
Measurement of fine particles at the production site

Results

According to the simulations carried out:

1. The ventilation and material choices made ensure good air quality in rooms.

2. The ventilation is properly dimensioned and allows sufficient renewal of air in the rooms it serves.

3.The recirculation system, when activated and coupled with ventilation, maintains pollution levels at correct levels. It also filters fine particles from the outside.

4. The levels of pollutants are very high in coins without any recirculation.

Our recommandations

We recommend recirculating ventilation in most rooms to prevent excessive particulate matters levels.

This modulation is interesting because it enables to maintain a good air quality while having energy benefits if pollutant peaks occur during heatwaves for exemple.