Application of Partial Safety Factorsin Building Energy Performance Assessment

Henrik Brohus; Per Heiselberg; A. Hesselholt; H. Rasmussen

Application of Partial Safety Factorsin Building Energy Performance Assessment

Henrik Brohus, Per Heiselberg, A. Hesselholt, H. Rasmussen

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

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Abstract

In practise many buildings show significant deviation between the predicted annual energy consumption and the actual energy consumption. One of the main reasons for the discrepancy is the difference between the assumptions made during the calculations and the actual conditions including occupants' behaviour.

This paper presents two methods to consider uncertainty and spread of energy consumption calculations in practise, namely a simulation approach and a safety factor approach.

A simulation approach is investigated using Monte Carlo analysis where a comprehensive list of stochastic input parameters is evaluated by sensitivity and uncertainty analysis to develop a significantly reduced set of stochastic input parameters.

The safety factor approach provides a means of enforcing the maximum allowed energy consumption in the building code by multiplying the maximum limit by a partial safety factor to obtain a design energy consumption that can be used for the usual energy calculations.

Original language	English
Title of host publication	Building Simulation 2009 : University of Stractclyde, Glosgow, 27th-30th July : Proceedings of the 11th International Building Performance Simulation Association Conference
Editors	Paul A. Strachan, Nick J. Kelly, Michaël Kummert
Publisher	The International Building Performance Simulation Association Conference
Publication date	2009
Pages	1014-1021
ISBN (Print)	978-0-947649-40-1
Publication status	Published - 2009
Event	The International Building Performance Simulation Association Conference (IBPSA) - Glasgow, United Kingdom Duration: 27 Jul 2009 → 30 Jul 2009 Conference number: 11

Conference

Conference	The International Building Performance Simulation Association Conference (IBPSA)
Number	11
Country/Territory	United Kingdom
City	Glasgow
Period	27/07/2009 → 30/07/2009

Bibliographical note

Published on a DVD.

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Application of Partial Safety Factorsin Building Energy Performance AssessmentFinal published version, 500 KB

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Cite this

Brohus, H., Heiselberg, P., Hesselholt, A., & Rasmussen, H. (2009). Application of Partial Safety Factorsin Building Energy Performance Assessment. In P. A. Strachan, N. J. Kelly, & M. Kummert (Eds.), Building Simulation 2009 : University of Stractclyde, Glosgow, 27th-30th July: Proceedings of the 11th International Building Performance Simulation Association Conference (pp. 1014-1021). The International Building Performance Simulation Association Conference.

Brohus, Henrik ; Heiselberg, Per ; Hesselholt, A. et al. / Application of Partial Safety Factorsin Building Energy Performance Assessment. Building Simulation 2009 : University of Stractclyde, Glosgow, 27th-30th July: Proceedings of the 11th International Building Performance Simulation Association Conference. editor / Paul A. Strachan ; Nick J. Kelly ; Michaël Kummert. The International Building Performance Simulation Association Conference, 2009. pp. 1014-1021

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title = "Application of Partial Safety Factorsin Building Energy Performance Assessment",

abstract = "In practise many buildings show significant deviation between the predicted annual energy consumption and the actual energy consumption. One of the main reasons for the discrepancy is the difference between the assumptions made during the calculations and the actual conditions including occupants' behaviour.This paper presents two methods to consider uncertainty and spread of energy consumption calculations in practise, namely a simulation approach and a safety factor approach.A simulation approach is investigated using Monte Carlo analysis where a comprehensive list of stochastic input parameters is evaluated by sensitivity and uncertainty analysis to develop a significantly reduced set of stochastic input parameters.The safety factor approach provides a means of enforcing the maximum allowed energy consumption in the building code by multiplying the maximum limit by a partial safety factor to obtain a design energy consumption that can be used for the usual energy calculations.",

author = "Henrik Brohus and Per Heiselberg and A. Hesselholt and H. Rasmussen",

note = "Published on a DVD.; The International Building Performance Simulation Association Conference (IBPSA) ; Conference date: 27-07-2009 Through 30-07-2009",

year = "2009",

language = "English",

isbn = "978-0-947649-40-1",

pages = "1014--1021",

editor = "Strachan, {Paul A.} and Kelly, {Nick J.} and Micha{\"e}l Kummert",

booktitle = "Building Simulation 2009 : University of Stractclyde, Glosgow, 27th-30th July",

publisher = "The International Building Performance Simulation Association Conference",

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Brohus, H , Heiselberg, P, Hesselholt, A & Rasmussen, H 2009, Application of Partial Safety Factorsin Building Energy Performance Assessment. in PA Strachan, NJ Kelly & M Kummert (eds), Building Simulation 2009 : University of Stractclyde, Glosgow, 27th-30th July: Proceedings of the 11th International Building Performance Simulation Association Conference. The International Building Performance Simulation Association Conference, pp. 1014-1021, The International Building Performance Simulation Association Conference (IBPSA), Glasgow, United Kingdom, 27/07/2009.

Application of Partial Safety Factorsin Building Energy Performance Assessment. / Brohus, Henrik ; Heiselberg, Per; Hesselholt, A. et al.
Building Simulation 2009 : University of Stractclyde, Glosgow, 27th-30th July: Proceedings of the 11th International Building Performance Simulation Association Conference. ed. / Paul A. Strachan; Nick J. Kelly; Michaël Kummert. The International Building Performance Simulation Association Conference, 2009. p. 1014-1021.

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

TY - GEN

T1 - Application of Partial Safety Factorsin Building Energy Performance Assessment

AU - Brohus, Henrik

AU - Heiselberg, Per

AU - Hesselholt, A.

AU - Rasmussen, H.

N1 - Conference code: 11

PY - 2009

Y1 - 2009

N2 - In practise many buildings show significant deviation between the predicted annual energy consumption and the actual energy consumption. One of the main reasons for the discrepancy is the difference between the assumptions made during the calculations and the actual conditions including occupants' behaviour.This paper presents two methods to consider uncertainty and spread of energy consumption calculations in practise, namely a simulation approach and a safety factor approach.A simulation approach is investigated using Monte Carlo analysis where a comprehensive list of stochastic input parameters is evaluated by sensitivity and uncertainty analysis to develop a significantly reduced set of stochastic input parameters.The safety factor approach provides a means of enforcing the maximum allowed energy consumption in the building code by multiplying the maximum limit by a partial safety factor to obtain a design energy consumption that can be used for the usual energy calculations.

AB - In practise many buildings show significant deviation between the predicted annual energy consumption and the actual energy consumption. One of the main reasons for the discrepancy is the difference between the assumptions made during the calculations and the actual conditions including occupants' behaviour.This paper presents two methods to consider uncertainty and spread of energy consumption calculations in practise, namely a simulation approach and a safety factor approach.A simulation approach is investigated using Monte Carlo analysis where a comprehensive list of stochastic input parameters is evaluated by sensitivity and uncertainty analysis to develop a significantly reduced set of stochastic input parameters.The safety factor approach provides a means of enforcing the maximum allowed energy consumption in the building code by multiplying the maximum limit by a partial safety factor to obtain a design energy consumption that can be used for the usual energy calculations.

M3 - Article in proceeding

SN - 978-0-947649-40-1

SP - 1014

EP - 1021

BT - Building Simulation 2009 : University of Stractclyde, Glosgow, 27th-30th July

A2 - Strachan, Paul A.

A2 - Kelly, Nick J.

A2 - Kummert, Michaël

PB - The International Building Performance Simulation Association Conference

T2 - The International Building Performance Simulation Association Conference (IBPSA)

Y2 - 27 July 2009 through 30 July 2009

ER -

Brohus H , Heiselberg P, Hesselholt A, Rasmussen H. Application of Partial Safety Factorsin Building Energy Performance Assessment. In Strachan PA, Kelly NJ, Kummert M, editors, Building Simulation 2009 : University of Stractclyde, Glosgow, 27th-30th July: Proceedings of the 11th International Building Performance Simulation Association Conference. The International Building Performance Simulation Association Conference. 2009. p. 1014-1021