This paper reports the findings of a pilot field study in two naturally ventilated child-care centres. Air temperatures, air velocities, turbulence intensity and air change rates were measured. The method and the results are presented

That study aims at characterizing the indoor air quality, mainly in terms of VOCs in nine schools of a littoral urban area in Portugal. Measurements and results are presented.

The survey has been carried out in two nursery schools located in Strasbourg to quantify both the formaldehyde levels and the air change rates of three classrooms investigated two days continuously, one day with and one day without the presence of children.The results show the impact of ventilation rate on formaldehyde levels.

The aim of this paper is to study the impact of outdoor and indoor sources in a school environment.PM10 and PM2.5 measurements were made inside a portuguese classroom and compared with outdoor PM10 concentration to study the impact of ventilation in respirable particles reduction.

The article compares the energy consumption linked to different ventilation systems of an office room (22 m2, 3 m high, occupied by 2 persons from 8 a.m to 6 p.m, internal heat source 15 W/m2). Those systems are : air renewal through windows opening, classical control mechanical ventilation with heat recovery, high energy efficient control mechanical ventilation with heat recovery. The mechanical systems provide 40 m3/h/person (air change rate 1.2 vol/hr).

A field experiment was conducted in a primary school in 3 steps : first Personal Air Quality (PAQ) was assessed with the used bag-filters present in the air supply path, then when the bag filters had been removed, and finally when filters were refitted. The results showed that PAQ was better when the filters were removed, the author find it urgent to improve standards and filtration products for comfort ventilation.

A realistic simulation experiment was conducted on students in a climate chamber, the objective of the laboratory experiments was to evaluate the quantitative effects of the air quality and thermal environments on learning performance High-ventilation environment (all outdoor air) and low-ventilation environment (100 % returned air only) were tested. The results were consistent with those found with the field intervention survey.

A statistical interpretation of nearly 8 000 individual questionnaires on perceived indoor environment has been made. Results show several correlations found between comfort complaints or presence of SBS symptoms and the characteristics of offices and apartments indoor environment.

A general analysis of technologies aiming at improving indoor air quality in Polish schools is described in this paper. A case study shool was selected for the comparison of selected technologies for ventilation system.

In this paper a number of comfort indicators required for the assessment of indoor environmental building performance are presented, they both include temporal variation and the degree of discomfort perceived by the occupant. A test case using thermal building simulations is applied on a ventilated office building