Indoor environment in a digital future - Master thesis - s154397 - s153767 (1)

2.7 Summary of Parameters and Symptoms
Table 2.9 presents an overview of the IEQ categories, their parameters, guidelines and related symptoms.
The guidelines which are based on literature, research, standards and regulation previously
presented are divided into the categories good, acceptable and unacceptable. The other air pollutants
than the specified include Ozone, NO and CO which have different limits and the guidelines
are therefore not included in the Table. As seen on the Table several of the parameters can cause
the same symptoms, hence experienced symptoms related to one parameter could also be caused
by another parameter. Furthermore, some of the parameter might be related to other symptoms or
symptoms not listed simply because it has not been investigated or scientifically proven. This Table
however, gives a reasonable overview of guidelines and symptoms and has been used as a reference
through the rest of this project.
CO2
ppm
Indoor air quality
PM2.5
μm/m 3
VOC
ppb
Other
pollutants
Temperature
°C
Guidelines
Thermal comfort
RH
%
Acoustic
comfort
Noise
dB
Visual
comfort
Good 0-800 0-10 0-220 20-23 25-60 <40 >500
Acceptable 800-1200 10-25 220-660 18-20 and 23-25 20-25 and 60-70 40-70
Unacceptable >1200 >25 >660 <18 and >25 <20 and >70 >70 <500
Fatique
x
Lack of concentration
Headache
x
Shortness
of breath
Cough
x
Wheeze
x
Throat
irritation
Eye
irritation
Nose
irritation
Dryness
of skin
Skin
irritation
Rash
x
SBS symptoms
General symptoms Respiratory symptoms Mucous membrane symptoms Skin symptoms
Light
Lux
Table 2.9: Overview of IEQ guidelines and related symptoms
18 INDOOR ENVIRONMENT IN A DIGITAL FUTURE