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Title:	Estimation of a room ventilation air change rate using a stochastic grey-box modelling approach
Author:	Macarulla Martí, Marcel; Casals Casanova, Miquel; Forcada Matheu, Núria; Gangolells Solanellas, Marta; Giretti, Alberto
Other authors:	Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció; Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Abstract:	The measurement of ventilation air change rate is a difficult, expensive task in buildings. Usually, the tracer-gas mass balance equation is used to determine ventilation air change rates. This method uses an ordinary differential equation. Consequently, it cannot deal with disturbances that enter the system, such as the influence of unrecognized and unmodelled inputs or the measurement noise. The use of the stochastic grey-box modelling approach, which is less common in the ventilation field, can help to deal with disturbances that can affect the system. The objective of this paper is to assess the potential of using the stochastic grey-box modelling approach to estimate the ventilation air change rate. The modelling is based on the stochastic differential equation of tracer-gas mass balance. The results show that this approach produces robust estimations to determine the ventilation air change rate of a room.
Abstract:	Peer Reviewed
Subject(s):	-Àrees temàtiques de la UPC::Edificació::Instal·lacions i acondicionament d'edificis::Instal·lacions de climatització -Indoor air pollution -Air conditioning--Equipment and supplies -Stochastic models -Indoor air quality -Ventilation -Air change rate estimation -Stochastic methods -Low-order model -Aire condicionat -- Aparells i accessoris -Contaminació de l'ambient interior -Models estocàstics
Rights:	Attribution-NonCommercial-NoDerivs 3.0 Spain http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Document type:	Article - Submitted version Article
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