Assessing the accuracy of a simplified building energy simulation model using BESTEST: The case study of Brazilian regulation

A. P. Melo, D. Cóstola, R. Lamberts, J. L M Hensen

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

This paper reports the use of an internationally recognized validation and diagnostics procedure to test the fidelity of a simplified calculation method. The case study is the simplified model for calculation of energy performance of building envelopes, introduced by the Brazilian regulation for energy efficiency in commercial buildings. The first step of the assessment consisted on evaluating the simplified model results using the BESTEST. This paper presents a straightforward approach to apply the BESTEST in other climates than the original one (Denver, USA). The second step of the assessment consisted on applying the simplified model to evaluate four building typologies, and compare the results with those obtained using a state of the art building energy simulation (BES) program. For some BESTEST cases, the simplified model presented results inside of a confidence interval calculated by the authors. However, the simplified model was found to yield significant difference in the four building typologies analysed. Moreover, in all four building typologies analysed, the simplified model led to a lower energy efficiency label when compared to the label obtained using BES. The paper concludes that the simplified model may require improvements to properly indicate the actual energy performance of commercial building envelopes.

Original languageEnglish
Pages (from-to)219-228
Number of pages10
JournalEnergy and Buildings
Volume45
DOIs
Publication statusPublished - 1 Feb 2012

Fingerprint

Energy efficiency
Labels

Keywords

  • BESTEST
  • building energy simulation
  • building envelope
  • regulation
  • simplified model

Cite this

@article{bf4613bde09b47be86daaa7098d942e5,
title = "Assessing the accuracy of a simplified building energy simulation model using BESTEST: The case study of Brazilian regulation",
abstract = "This paper reports the use of an internationally recognized validation and diagnostics procedure to test the fidelity of a simplified calculation method. The case study is the simplified model for calculation of energy performance of building envelopes, introduced by the Brazilian regulation for energy efficiency in commercial buildings. The first step of the assessment consisted on evaluating the simplified model results using the BESTEST. This paper presents a straightforward approach to apply the BESTEST in other climates than the original one (Denver, USA). The second step of the assessment consisted on applying the simplified model to evaluate four building typologies, and compare the results with those obtained using a state of the art building energy simulation (BES) program. For some BESTEST cases, the simplified model presented results inside of a confidence interval calculated by the authors. However, the simplified model was found to yield significant difference in the four building typologies analysed. Moreover, in all four building typologies analysed, the simplified model led to a lower energy efficiency label when compared to the label obtained using BES. The paper concludes that the simplified model may require improvements to properly indicate the actual energy performance of commercial building envelopes.",
keywords = "BESTEST, building energy simulation, building envelope, regulation, simplified model",
author = "Melo, {A. P.} and D. C{\'o}stola and R. Lamberts and Hensen, {J. L M}",
year = "2012",
month = "2",
day = "1",
doi = "10.1016/j.enbuild.2011.11.007",
language = "English",
volume = "45",
pages = "219--228",
journal = "Energy and Buildings",
issn = "0378-7788",
publisher = "Elsevier BV",

}

Assessing the accuracy of a simplified building energy simulation model using BESTEST : The case study of Brazilian regulation. / Melo, A. P.; Cóstola, D.; Lamberts, R.; Hensen, J. L M.

In: Energy and Buildings, Vol. 45, 01.02.2012, p. 219-228.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Assessing the accuracy of a simplified building energy simulation model using BESTEST

T2 - The case study of Brazilian regulation

AU - Melo, A. P.

AU - Cóstola, D.

AU - Lamberts, R.

AU - Hensen, J. L M

PY - 2012/2/1

Y1 - 2012/2/1

N2 - This paper reports the use of an internationally recognized validation and diagnostics procedure to test the fidelity of a simplified calculation method. The case study is the simplified model for calculation of energy performance of building envelopes, introduced by the Brazilian regulation for energy efficiency in commercial buildings. The first step of the assessment consisted on evaluating the simplified model results using the BESTEST. This paper presents a straightforward approach to apply the BESTEST in other climates than the original one (Denver, USA). The second step of the assessment consisted on applying the simplified model to evaluate four building typologies, and compare the results with those obtained using a state of the art building energy simulation (BES) program. For some BESTEST cases, the simplified model presented results inside of a confidence interval calculated by the authors. However, the simplified model was found to yield significant difference in the four building typologies analysed. Moreover, in all four building typologies analysed, the simplified model led to a lower energy efficiency label when compared to the label obtained using BES. The paper concludes that the simplified model may require improvements to properly indicate the actual energy performance of commercial building envelopes.

AB - This paper reports the use of an internationally recognized validation and diagnostics procedure to test the fidelity of a simplified calculation method. The case study is the simplified model for calculation of energy performance of building envelopes, introduced by the Brazilian regulation for energy efficiency in commercial buildings. The first step of the assessment consisted on evaluating the simplified model results using the BESTEST. This paper presents a straightforward approach to apply the BESTEST in other climates than the original one (Denver, USA). The second step of the assessment consisted on applying the simplified model to evaluate four building typologies, and compare the results with those obtained using a state of the art building energy simulation (BES) program. For some BESTEST cases, the simplified model presented results inside of a confidence interval calculated by the authors. However, the simplified model was found to yield significant difference in the four building typologies analysed. Moreover, in all four building typologies analysed, the simplified model led to a lower energy efficiency label when compared to the label obtained using BES. The paper concludes that the simplified model may require improvements to properly indicate the actual energy performance of commercial building envelopes.

KW - BESTEST

KW - building energy simulation

KW - building envelope

KW - regulation

KW - simplified model

UR - http://www.scopus.com/inward/record.url?scp=84855237629&partnerID=8YFLogxK

UR - http://www.sciencedirect.com/science/article/pii/S0378778811005470

U2 - 10.1016/j.enbuild.2011.11.007

DO - 10.1016/j.enbuild.2011.11.007

M3 - Article

AN - SCOPUS:84855237629

VL - 45

SP - 219

EP - 228

JO - Energy and Buildings

JF - Energy and Buildings

SN - 0378-7788

ER -