Uncertainty of Energy Consumption Assessment of Domestic Buildings

Henrik Brohus, Per Heiselberg, A. Simonsen, K.C. Sørensen

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

24 Citations (Scopus)
117 Downloads (Pure)

Abstract

In order to assess the influence of energy reduction initiatives, to determine the expected annual cost, to calculate life cycle cost, emission impact, etc. it is crucial to be able to assess the energy consumption reasonably accurate.

The present work undertakes a theoretical and empirical study of the uncertainty of energy consumption assessment of domestic buildings. The calculated energy consumption of a number of almost identical domestic buildings in Denmark is compared with the measured energy consumption. Furthermore, the uncertainty is determined by means of stochastic modelling based on input distributions found by literature study, industry guidelines, measurements and - when necessary - simple assumptions.

A number of parameters are investigated and ranked in terms of importance to determine which ones contribute the most to the overall level of uncertainty. Measurements and simulations are found to correspond reasonably well; however, it is also found that significant differences may occur between calculated and measured energy consumption due to the spread and due to the fact that the result can only be determined with a certain probability. It is found that occupants' behaviour is the major contributor to the variance of the energy consumption.
Original languageEnglish
Title of host publicationBuilding Simulation 2009 : University of Stractclyde, Glosgow, 27th-30th July : Proceedings of the 11th International Building Performance Simulation Association Conference
EditorsPaul A. Strachan, Nick J. Kelly, Michaël Kummert
Number of pages8
PublisherThe International Building Performance Simulation Association Conference
Publication date2009
ISBN (Print)978-0-947649-40-1
Publication statusPublished - 2009
EventThe International Building Performance Simulation Association Conference (IBPSA) - Glasgow, United Kingdom
Duration: 27 Jul 200930 Jul 2009
Conference number: 11

Conference

ConferenceThe International Building Performance Simulation Association Conference (IBPSA)
Number11
CountryUnited Kingdom
CityGlasgow
Period27/07/200930/07/2009

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