Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
CO2 CONCENTRATION CONTROL SYSTEM IN TEACHING INSTUTIONS
Submission Author:
Camilla Silva , BA
Co-Authors:
Camilla Silva, LEANDRO MOTA CARVALHO, Luis Gabriel Guanabara Keler Gesteira
Presenter: Camilla Silva
doi://10.26678/ABCM.COBEM2017.COB17-2466
Abstract
Regarding air-conditioned environments that keep a large number of people for long periods, such as classrooms, the level of wholesomeness must be suitable to ensure the learning process and health. Therefore, air conditioning systems have to work not only on parameters such as temperature and relative humidity but also on air renovation and filtration to ensure that Inner Air Quality (IAQ) is always acceptable considering the accumulation of CO2 produced by occupants respiration. Researches show that high concentrations of this non-biological contaminant can cause headaches, drowsiness and attention deficit, reducing student performance. In order to preserve the IAQ, the present work describes the development of an automated air renovation system for a classroom of an educational institution. The system was built with a CO2 sensor, which is responsible for the measurement of CO2 concentration in ppm (parts per million) inside the classroom; an Arduino, for data acquisition and control of the measured variable through the activation of an air blower and two overpressure dampers, to keep positive internal pressure but at acceptable levels. The CO2 concentration reference used was 1000 ppm – maximum value for chemical contamination recommended by technical standards and sanitary surveillance agencies.
Keywords
Internal Air Quality, CO2 concentration, Learning, Educational Institutions, Automated System
