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Title: Using a Calibrated Building Energy Simulation Model to Study the Effects of Improving the Ventilation in a School
Authors: Bernardo, Hermano 
Quintal, Edgar 
Oliveira, Filipe 
Keywords: building energy simulation model; energy efficiency; mechanical ventilation; school building
Issue Date: 2017
Project: UID/MULTI/00308/2013 
Serial title, monograph or event: Energy Procedia
Volume: 113
Abstract: This paper aims at presenting the development of a calibrated building energy simulation model of a school building to study the impact of improving the ventilation system on energy performance. The simulation model was developed with the DesignBuilder/Energyplus software and it was calibrated based on data collected during an energy audit to the school building. Schools need high outdoor airflow rates to remove indoor air contaminants related to occupants and building components, thus requiring mechanical ventilation systems. Due to budget restrictions, school managers decided to schedule the building management system to keep the HVAC systems active only between 6:00 am and 10:00 am. According to the values measured in this school, it was patent that the CO2 concentration was too high in certain periods. Too high peak values undermine the indoor air quality in the remaining occupancy time of the classroom, harming the work conditions for teachers and students. To solve this problem, an extended usage schedule of the mechanical ventilation was simulated (8:00 am to 5:00 pm) according to the required enhancement of indoor air quality, which together with the adoption of the new calculated fresh air flow rates will enhance air quality while avoiding excessive cost, thus increasing energy efficiency.
ISSN: 18766102
DOI: 10.1016/j.egypro.2017.04.044
Rights: openAccess
Appears in Collections:I&D INESCC - Artigos em Revistas Internacionais

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