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[On parle de nous] Ville de Lorient : les capteurs de co2 se déploient - WATTECO

La concentration de C02 dans l’air en extérieur est de l’ordre de 400 ppm (partie par million). Lorsque celle-ci est inférieure à 600 ppm dans une classe, le voyant du capteur est au vert. Au-delà, il passe en orange et l’aération devient conseillée.

Un article paru dans Lorient Mag n°363 mars-avril 2022

 

La Ville de Lorient investit dans l’achat de capteurs de C02 pour équiper écoles et crèches. Des capteurs d’air avaient déjà été installés à l’automne 2021 pour mieux contrôler et apprécier la qualité de l’air dans plusieurs lieux clos où les enfants sont plus nom­breux et où la concentration en C02 peut être plus importante. Suite aux retours de satisfaction obser­vés, la Ville a décidé de commander 200 capteurs supplémentaires. Les premiers ont été installés fin janvier dans les salles de classe à l’école Bisson, et toutes les écoles seront équipées dans les pro­chaines semaines au fur et à mesure des approvi­sionnements. Au-delà de l’efficacité constatée sur les pratiques d’aération, ces capteurs permettent en outre de mesurer les températures (confort et économies d’énergie), l’humidité (confort, entretien des bâtiments) et les composés organiques volatils. Les capteurs ont été commandés à une entreprise locale, NKE, située à Hennebont, et représentent un investissement de 30 000 €.