Presentation by Johan Haeberle, IES and Maxence Mendez, Octopus Lab on the Importance of Indoor Air Quality, introducing a new tool within IESVE.

1. INTEGRATED ENVIRONMENTAL SOLUTIONS
29 YEARS OF SUSTAINABLE DESIGN

2. Meet the Presenters
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3. Indoor Air Quality
Why it matters – Maxence Mendez
How it works (live demo)
• Indalo® IAQ Navigator – Johan Haeberle
• Indalo® Engine – Maxence Mendez
Software requirement – Johan Haeberle
Q&A

4. AIR QUALITY : WORLD WIDE HEALTH ISSUE
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8,8
millions of deaths / year
globally
times more polluted indoors than outdoors
8
the world's population breaths unsafe air
92%
Average PM2.5 exposure (NASA)

5. SEVERAL KIND OF POLLUTANTS
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6. CO2
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Emitted by breathing, the amount of emitted CO2 depends on
occupants activity
Risks
Decrease of cognitive ability, decrease of
employees’ productivity, headache, elevated blood
pressure
recommended threshold
below 1000 ppm
(around 420 ppm outdoor)
CO2 is a proxy to assess COVID risk
CO2 = proxy for indoor confinement and rough index of air
renewal
Sufficient air renewal rate
= decrease of viral charge concentration
= decrease of COVID transmission

7. Volatil Organic Compounds
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Continuous emission by materials and furnitures
one-off emission by occupants’ activity like : cleaning,
cooking, etc
Risks
Irritation of the eyes and mucous
membranes of the respiratory tract, heart
problems, breathing difficulty, cough, chest
discomfort, shortness of breath
Recommended threshold
1000 μg/m3
Each label or certification has its own threshold and
measurement method.

8. Outdoor pollutants
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Building leaks and ventilation bring outdoor pollutants
indoors.
Particulate matter (PM) are mostly emitted by combustion
processes (heating, traffic, etc), agriculture, etc
Nitrogen oxydes (NO2) are also emitted by combustion
processes
Ozone (O3) is formed by reactivtity of NO2 with UV light and
outdoor VOC
Health issues :
Inflammation, carcinogenic risks,
irritation of the ocular and respiratory
mucous membranes, risk of asthma
attacks, headaches and disruption of
respiratory functions
Recommended threshold
PM2.5 : 5 μg/m3 (WHO)
O3 : 120 µg/m3 (UE)
NO2 : 40 µg/m3 (UE)

9. Humidity - Mold
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Mold formation depends on humidity, surface temperature.
Its formation rate increase with poorly ventilated rooms and
thermal bridges.
Mold produces mycotoxins impacting health
Main health issues :
Eye, nose and throat irritation, sinus
congestion, wheezing; cough,
increased frequency and severity of
asthma attacks; chronic fatigue,
headaches.

10. BUILDING CHOICES IMPACTING INDOOR AIR QUALITY
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Air thightness impacts natural ventilation and global air renewal
Materials : emission of VOC (including formaldehyde)
Occupancy : occupancy rate per m²
Ventilation strategy :
- air flows
- filtration
- extract, supply, or dual flow system
- recirculation rate
- ventilation program (scheduled or demand controlled ventilation)
Environnement :
- météorologie (vitesse de vent, température, humidité)
- qualité d’air extérieur

11. INDOOR AIR as a part of your green building strategy
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Requirements :
•Maximum concentration of several pollutants :
•PM2.5 : 12 µg/m3
•PM10 : 50 µg/m3 (20 for healthcare facilities)
•O3 : 70 ppb
•CO : 9 ppm
•VOC :
•HCHO : 20 µg/m3
•CH3CHO : 140 µg/m3
•Benzene : 3 µg/m3
•Hexane : 7000 µg/m3
•Styrene : 900 µg/m3
•Toluene : 300 µg/m3
•etc
Requirements :
•Indoor air related practices :
•Ability for natural ventilation
•Choice of low VOC-emission materials
•Innovation or beyond best practice
•Results, maximum concentration of several
pollutants :
•TVOC : 300 µg/m3
•HCHO : 100 µg/m3

12. INDOOR AIR as a part of your green building strategy
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13. INDALO
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INCA-Indoor ©
•750+ VOC
•Particulate matter (from 5 nm to 50µm)
•Ozone and nitrogen oxyde
Accounts for full phyisics and chemistry of polluants
• Multizonal aeraulic transfer
• Chemical reactivity
• Surface / pollutant interaction
• Light / pollutant interaction
Open data
• Outdoor air quality
• Material VOC emission from certified measurements
Validation since 2013
• several field campaign measurements comparisons
• SURFin and MERMAID projects (ADEME grants)
• CSTB and Qualitel (French certification) projects

14. How it works
Indalo® IAQ Navigator
▪ Export VE simulated model results to Octopus Labs Indalo®
▪ User must set up Indalo® account (for billing)
▪ ApSystem (DOAS) or ApHVAC based models supported
▪ Room groups for selecting rooms for analysis
▪ Dialog for assigning Indalo® material data to room groups
▪ Dialog to set APS file and 7-day Indalo® sim period
▪ Tool exports model APS data and weather data via JSON
▪ via XLSX and PDF reports
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15. How it works
Indalo® Engine
▪ Indalo® cloud-based server simulations
▪ Indalo® simulates > 900 VOC, fine particles, O3, NOx and
viral charge, HVAC filtration, infiltration & weather
▪ Indalo® dashboard to manage simulations
▪ Indalo® outputs the concentration of hundreds of
pollutants via XLSX and PDF reports
NB: CO2 results from the VE and Indalo do not perfectly
match as they come from different calculation methods
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16. INDALO - Results
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Formaldéhyde concentration (µg/m3) CO2 concentration (ppm)

17. INDALO - Results
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water-based varnish
67.3 %
door panel 8.0 %
acoustic ceiling panel
24.7%
Distribution of total VOC emission from materials

18. INDALO - Results
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water-based
varnish 67.3 %
door panel 8.0 %
acoustic ceiling panel
24.7%
Distribution of total VOC emission from materials
Simulation id Floor finish HCHO (µg/m
3
) COVT (µg/m
3
) Xylènes (µg/m
3
)
1 Water-based varnish (A+
quality)
3.6 440 18
2 Solvent-based varnish (A+
quality)
3.6 474 130
3 standard A+ finish 9.2 1450 250
4 standard A finish 36 2050 380
5 standard B finish 67 2660 505

19. INDALO – Reporting
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20. Software requirement
▪ VE2023 FP4 and after
▪ VE Expert pack (includes Indalo Navigator)
▪ Indalo licence
For any information, contact your IES account manager or sales@iesve.com
Ask for your 15 days free trial!
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21. Questions and Answers
Thank you!
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