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Titre du document / Document title

Control of CO2 in a naturally ventilated classroom

Auteur(s) / Author(s)

GRIFFITHS M. (1) ; EFTEKHARI M. (2) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Equion Facilities Management, Allington House, 150 Victoria Street, London SWIE 5LB, ROYAUME-UNI
(2) Department of Civil & Building Engineering, Loughborough University, Loughborough, Leicestershire LE11 3TU, ROYAUME-UNI

Résumé / Abstract

The ventilation performance of a naturally ventilated classroom was investigated to monitor the CO2 levels and compare compliance with new guidelines. Measurements of CO2 levels were taken for 1 week during the heating season while different ventilation modes were investigated. The classroom was shown to have adequate ventilation to provide compliance with current recommendations although thermal comfort was sometimes compromised. Trickle ventilation provided useful ventilation at a rate of 0.751s-1 per person. Purge ventilation was shown to reduce the CO2 concentration by 1000 ppm but would not be sufficient to maintain an acceptable level. Experimental measurements showed that the trickle ventilators provided useful background ventilation at a total classroom rate of 22.9 1s-1 or approximately 0.751s-1 per person which is not enough on its own. Night time use of trickle ventilators for reducing day time CO2 concentration level is not beneficial since the classroom returns to ambient concentration levels by the time the room is used again. Hence energy savings could be made by reducing the overnight background ventilation during heating period. The teaching staff and pupils control the ventilation into the classrooms by thermal comfort rather than air quality.

Revue / Journal Title

Energy and buildings    ISSN  0378-7788   CODEN ENEBDR 

Source / Source

2008, vol. 40, no4, pp. 556-560 [5 page(s) (article)] (12 ref.)

Langue / Language

Anglais

Editeur / Publisher

Elsevier, Oxford, ROYAUME-UNI  (1977) (Revue)

Mots-clés anglais / English Keywords

Europe

;

Simulation

;

Concentration

;

Experimental study

;

Measurement result

;

United Kingdom

;

Research program

;

Methodology

;

Check

;

Impact study

;

Carbon dioxide

;

Performance evaluation

;

Natural ventilation

;

Classroom

;

School

;

Mots-clés français / French Keywords

Europe

;

Simulation

;

Concentration

;

Etude expérimentale

;

Résultat mesure

;

Royaume-Uni

;

Programme recherche

;

Méthodologie

;

Contrôle

;

Etude impact

;

Dioxyde de carbone

;

Evaluation performance

;

Ventilation naturelle

;

Salle cours

;

Ecole

;

Mots-clés espagnols / Spanish Keywords

Europa

;

Simulación

;

Concentración

;

Estudio experimental

;

Resultado medición

;

Reino Unido

;

Programa investigación

;

Metodología

;

Control

;

Estudio impacto

;

Carbono dióxido

;

Evaluación prestación

;

Ventilación natural

;

Aula clase

;

Escuela

;

Mots-clés d'auteur / Author Keywords

Schools

;

Carbon dioxide

;

Ventilation

;

Control

;

Localisation / Location

INIST-CNRS, Cote INIST : 16056, 35400016277551.0170

Nº notice refdoc (ud4) : 20001159



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