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Your search keyword '"INDOOR air quality"' showing total 2 results
2 results on '"INDOOR air quality"'

1. IMPACT OF CO2 CONCENTRATION ON INDOOR AIR QUALITY AND CORRELATION WITH RELATIVE HUMIDITY AND INDOOR AIR TEMPERATURE IN SCHOOL BUILDINGS IN SERBIA.

Author

LAZOVIĆ, Ivan M., STEVANOVIĆ, Žarko M., JOVAŠEVIĆ-STOJANOVIĆ, Milena V., ŽIVKOVIĆ, Marija M., and BANJAC, Miloš J.

Subjects
*CARBON dioxide, *AIR quality, *ATMOSPHERIC temperature, *HUMIDITY, *HEATING & ventilation of school buildings, *THERMAL properties
Abstract

Previous studies have shown that poorly ventilated classrooms can have negative impact on the health of children and school staff. In most cases, schools in Serbia are ventilated naturally. Considering their high occupancy, classroom air quality test determines the level of air pollution, after which it is possible to implement corrective measures. The research presented in this study, was conducted in four schools which are located in different areas and have different architecture designs. Measurements in these schools have been performed during the winter (heating season) and spring (non-heating season) and the following results were presented: indoor air temperature, relative humidity, and carbon dioxide concentration. These results show that the classroom average concentration of carbon dioxide often exceeds the value of 1500 ppm, during its full occupancy, which indicates inadequate ventilation. Measurement campaigns show that carbon dioxide concentration increased significantly from non-heating to heating season in three of the four schools. Analysis of measurements also determined high correlation between relative humidity and carbon dioxide concentration in all schools in winter season. This fact may constitute a solid basis for the fresh air supply strategy. [ABSTRACT FROM AUTHOR]

Published
2016
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2. Monitoring Indoor Carbon Dioxide Concentration and Effectiveness of Natural Trickle Ventilation in a Middle School in Rome

Author

Annamaria Cimini, Alessandro Paravicini, and Cristina Cornaro

Subjects
Engineering, Settore ING-IND/11 - Fisica Tecnica Ambientale, business.industry, Air exchange, Indoor environment, Public Health, Environmental and Occupational Health, Environmental engineering, Thermal comfort, Natural ventilation, Indoor air quality, Carbon dioxide, Aeronautics, Classroom, Co2 concentration, Air quality, Indoor air temperature, business, Air quality index, TRICKLE
Abstract

An extensive CO2 concentration monitoring activity was carried out in a middle school located in Rome. Objective of the study was to evaluate the indoor air quality in eight classrooms during class occupation and to evaluate the ventilation rates of a natural trickle ventilation system, through an interactive approach involving the pupils. The analysis was conducted in two phases: a long-term analysis that consisted of evaluating the CO2 concentration and indoor air temperature in each classroom during the 2009/2010 scholastic year to obtain a snapshot of the indoor environment and a short-term testing carried out in 4 days in February 2010, involving the pupils in the monitoring activity. The campaign was performed during the teaching hours and students registered the air exchange events (opening and closing of windows and door) during the class hours. The correlation of the air exchange events recorded by the students with the CO2 concentration level recorded every minute and the opening and closing control of the trickle ventilation system allowed the evaluation of the ventilation rate of the system. The interactive evaluation approach gave the conclusion that the system alone could not completely fulfil its performance requirement.

Published
2011

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