Page 124 - Hong Kong Green School Guide
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3. Green School Guide - 3.5 Indoor Environmental Quality
Hong Kong Green School Guide
122
3.5.2 Indoor Air Quality (IAQ)
• A study conducted in the U.S. showed that sufficient fresh air and good indoor
air quality improved student and staff performance and reduced the number
of sick leaves taken.
Issues to Consider
a. Opportunities
• Schools can promote, monitor and implement high indoor air quality.
b. Constraints
• Indoor air quality evaluation;
• Improvement may not be obvious for schools situated in polluted areas (e.g.
busy vehicular roads, shopping centres with exhaust generation); and
• Lack of fresh air to dilute indoor air pollutants.
c. Solutions
• Major parameters used to evaluate indoor air quality include room
temperature, relative humidity, air movement, carbon dioxide (CO
2
), carbon
monoxide (CO), respirable suspended particulates (PM
10
), nitrogen dioxide
(NO
2
), ozone (O
3
), formaldehyde (HCHO), total volatile organic compounds
(TVOC), radon (Rn) and airborne bacteria. More information can be referred
to Useful Reference (1);
• The level of IAQ can be evaluated by IAQ measurement service providers.
The list of service providers can be referred to Useful Reference (1); and
Benefits
• Improve health of students and
staff;
• Prevent spread of diseases;
• Lessen respiratory illness or
existing conditions like asthma
and allergies; and
Applies to NS & ES
