INENCO   05446
INSTITUTO DE INVESTIGACIONES EN ENERGIA NO CONVENCIONAL
Unidad Ejecutora - UE
artículos
Título:
Evaluation of heating energy consumption patterns in the residential building sector using stepwise selection and multivariate analysis.
Autor/es:
C. FILIPPÍN, F. RICARDA, S. FLORES LARSEN
Revista:
ENERGY AND BUILDINGS
Editorial:
ELSEVIER SCIENCE SA
Referencias:
Lugar: Amsterdam; Año: 2013 p. 571 - 581
ISSN:
0378-7788
Resumen:
tThe aim of the present study is to evaluate historical consumption of natural gas for heating, between 1996and 2009, in multifamily buildings, using stepwise selection and multivariate analysis. 72 apartments ofthe capital of the province of La Pampa, Argentina, were studied. Some apartments were previously mon-itored, thus information about their thermal and energy behaviour is available. There are many variablesthat could influence the winter energy and annual consumption of the apartments. Based on the charac-teristics of buildings in Argentina and on previous research, ten variables were selected, from which themost representative ones were selected by using a stepwise method. Then, the apartments were groupedby applying clustering techniques, and the centroids for each cluster were determined by averaging thevariables that describe the cluster. It was shown that the apartments monitored in previous works, hav-ing good thermal behaviour, are close to the centroids of the group to which they belong and could betaken as references of their group. The annual heating energy consumption average for the sample is118.2 kWh/m2/y. However, a significant percentage of apartments showed energy consumptions lowerthan 70 kWh/m2/y, which is a widely accepted value to define a building as a ?low-energy? one. Thus,some apartments could be classified as ?low-energy?, but for the actual Argentinean Norm they do notqualify even for the worst energy level label. The results make evident a strong disagreement between theArgentinean standard label and the real energy consumption for heating. This fact should be consideredas fundamental in order to review the Norm.