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LCE analysis of buildings - Taking the step towards Net Zero Energy Buildings

Berggren, Björn LU ; Hall, Monika and Wall, Maria LU (2013) In Energy and Buildings 62. p.381-391
Abstract
The basic concept of a Net Zero Energy Building (Net ZEB) is that on-site renewable energy generation covers the annual energy load. The main objective of this study is to analyse the increase of embodied energy compared to the decrease of the energy use related to building operation; partly by a literature review, partly by detailed analysis of eleven case studies; taking the step from a low energy building to a Net ZEB. The literature review shows that the metric of evaluation, assumed life-span, boundary conditions, age of database and the origin of database differ in different studies and influence the result of embodied energy, The relationship between embodied energy and life cycle energy use is almost linear for all cases studied... (More)
The basic concept of a Net Zero Energy Building (Net ZEB) is that on-site renewable energy generation covers the annual energy load. The main objective of this study is to analyse the increase of embodied energy compared to the decrease of the energy use related to building operation; partly by a literature review, partly by detailed analysis of eleven case studies; taking the step from a low energy building to a Net ZEB. The literature review shows that the metric of evaluation, assumed life-span, boundary conditions, age of database and the origin of database differ in different studies and influence the result of embodied energy, The relationship between embodied energy and life cycle energy use is almost linear for all cases studied herein. During the last two decades, embodied energy in new buildings has decreased slightly. However, the relative share of embodied energy related to life cycle energy use has increased. The detailed life cycle energy analysis show that taking the step from a low energy building to a Net ZEB results in a small increase of the embodied energy. However, the energy savings achieved in the annual operating energy balance clearly exceed the increase in embodied energy. (C) 2013 Elsevier B.V. All rights reserved. (Less)
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author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Net zero energy building, Embodied energy, Operation energy, Life cycle, energy, Primary energy
in
Energy and Buildings
volume
62
pages
381 - 391
publisher
Elsevier
external identifiers
  • wos:000320426700043
  • scopus:84876221527
ISSN
1872-6178
DOI
10.1016/j.enbuild.2013.02.063
language
English
LU publication?
yes
id
6870a9f0-7d47-486b-ad9a-ff2b5548a9df (old id 3975915)
date added to LUP
2016-04-01 10:41:11
date last changed
2022-04-04 20:16:47
@article{6870a9f0-7d47-486b-ad9a-ff2b5548a9df,
  abstract     = {{The basic concept of a Net Zero Energy Building (Net ZEB) is that on-site renewable energy generation covers the annual energy load. The main objective of this study is to analyse the increase of embodied energy compared to the decrease of the energy use related to building operation; partly by a literature review, partly by detailed analysis of eleven case studies; taking the step from a low energy building to a Net ZEB. The literature review shows that the metric of evaluation, assumed life-span, boundary conditions, age of database and the origin of database differ in different studies and influence the result of embodied energy, The relationship between embodied energy and life cycle energy use is almost linear for all cases studied herein. During the last two decades, embodied energy in new buildings has decreased slightly. However, the relative share of embodied energy related to life cycle energy use has increased. The detailed life cycle energy analysis show that taking the step from a low energy building to a Net ZEB results in a small increase of the embodied energy. However, the energy savings achieved in the annual operating energy balance clearly exceed the increase in embodied energy. (C) 2013 Elsevier B.V. All rights reserved.}},
  author       = {{Berggren, Björn and Hall, Monika and Wall, Maria}},
  issn         = {{1872-6178}},
  keywords     = {{Net zero energy building; Embodied energy; Operation energy; Life cycle; energy; Primary energy}},
  language     = {{eng}},
  pages        = {{381--391}},
  publisher    = {{Elsevier}},
  series       = {{Energy and Buildings}},
  title        = {{LCE analysis of buildings - Taking the step towards Net Zero Energy Buildings}},
  url          = {{http://dx.doi.org/10.1016/j.enbuild.2013.02.063}},
  doi          = {{10.1016/j.enbuild.2013.02.063}},
  volume       = {{62}},
  year         = {{2013}},
}