An Experimental
Investigation of the Indoor Air Quality in Fifteen School Buildings in
Athens, Greece
A.
Synnefa1, E. Polichronaki1, E. Papagiannopoulou1,
M. Santamouris1, G. Mihalakakou1*, P. Doukas1,
P.A. Siskos2,
E. Bakeas2, A. Dremetsika2, A. Geranios3,
A. Delakou3
1
University of Athens, Department of Physics, Division of Applied Physics,
Laboratory of Meteorology, University Campus, Build. PHYS-V, Athens, GR
15784.
2 Environmental
Analysis Group. Laboratory of Analytical Chemistry, Department of
Chemistry, University of Athens, University Campus, 15771 Zographos,
Athens, Greece.
3
University of Athens, Department of Physics, Nuclear and Particle Physics
Section,
University Campus, Athens, Greece.
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Abstract
The present paper aims at investigating the indoor
air quality in fifteen school buildings located in the greater Athens
area. Experimental investigations were performed in fifteen different
school classrooms and the concentration levels of various pollutants such
as CO2, CO, TVOC, HCHO, and radon, were measured. Moreover, the
experimental investigation included measurements of several environmental
parameters such as temperature, relative humidity and air velocity inside
each classroom, while ventilation was examined by estimating the air
changes using the tracer gas technique. From the above investigation, it
was found that the indoor air quality inside the classrooms is strongly
related to the number of occupants and their activities. The toxic
pollutants such as CO, HCHO, TVOC and radon, measured inside the
classrooms, present concentrations that are lower than their relative
limit values and hence, they do not create any problem for the occupants.
However, frequently, the CO2 concentration levels were found to
be higher than the recommended limits. This can be attributed to
insufficient natural ventilation as well as to the absence of mechanical
ventilation.
Key words: environmental parameters, chemical
parameters, comfort parameters, ventilation.
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