Implementation of a Method in EN ISO13790 for Calculating the Utilisation Factor Taking Into Account Different Permeability Levels of Internal Coverings

• Type: Article in International Scientific Journal
• Date: 2010

Authors

José A. Orosa (Author) Other; Armando C. Oliveira (Author) FEUP

Journal

Title: Energy and Buildings

Vol. 42 No. 5

ISSN: 0378-7788

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 20 Citations

ISI Web of Science

Scopus - 25 Citations

COMPENDEX

INSPEC

Scientific classification

FOS: Engineering and technology > Other engineering and technologies

Other information

Authenticus ID: P-003-6YA

DOI: 10.1016/j.enbuild.2009.10.030

Abstract (EN): The general methodology for estimating energy consumption in buildings, in accordance with the EN ISO 13790, needs the use of constants that are valid for each set of climatic conditions. Furthermore, there are variables other than building structure and weather conditions that have an influence. In this sense, recent research works showed the real effect of permeable coverings on indoor environmental conditions, by controlling indoor moisture. The effect of the associated heat and mass transfer on heating or cooling energy consumption is evident during the initial hours of building occupation. In the present paper, the general methodology of building heat demand calculation is modified to consider different levels of permeability of internal coverings, in order to obtain a more accurate model. Results showed that permeable coverings are related with a higher building utilisation factor, and that the value of this factor is higher in summer than in winter season. Consequently, despite the fact that the sensibility of energy consumption to internal coverings may be lower than to building envelope, new constants are proposed to express a relationship between building permeability and energy consumption, in order to apply the certification equation.

Language: English

Type (Professor's evaluation): Scientific