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Influence of user-related parameters on calculated energy use in low-energy school buildings

Simanic, Branko LU ; Nordquist, Birgitta LU ; Bagge, Hans LU and Johansson, Dennis LU (2020) In Energies 13(11).
Abstract

Literature and experience show that there are large discrepancies between the calculated and measured building energy usages, where user-related parameters are significant factors with regard to energy use in low-energy buildings. Furthermore, the difficulties encountered when quantifying these parameters compound these discrepancies. The main aim of this study was to provide feedback that would help the building industry and research communities to predict more accurately the impact of the user-related parameters on energy performance. The results of the study would, subsequently, contribute to minimizing the discrepancies between calculated and measured energy use. This article analyses simulated building energy use based on randomly... (More)

Literature and experience show that there are large discrepancies between the calculated and measured building energy usages, where user-related parameters are significant factors with regard to energy use in low-energy buildings. Furthermore, the difficulties encountered when quantifying these parameters compound these discrepancies. The main aim of this study was to provide feedback that would help the building industry and research communities to predict more accurately the impact of the user-related parameters on energy performance. The results of the study would, subsequently, contribute to minimizing the discrepancies between calculated and measured energy use. This article analyses simulated building energy use based on randomly chosen combinations of measured user-related parameters in three recently built low-energy schools in Sweden. The results show that energy performance can span from 30 to 160 kWh/(m2 y) simply by varying the combination of previously measured user-related parameters in building energy simulations. The study shows that the set points for indoor air temperatures during the heating season and the energy required to run a demand-controlled ventilation system have an extensive influence, while tenant electricity use has a slightly lower influence on building energy use. Variations in occupancy rates and energy for hot water usage have the smallest influences on building energy use.

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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Calculated energy use, Low-energy schools, User-related parameters
in
Energies
volume
13
issue
11
article number
2985
publisher
MDPI AG
external identifiers
  • scopus:85087946676
ISSN
1996-1073
DOI
10.3390/en13112985
language
English
LU publication?
yes
id
d3962ffd-967b-4178-a310-9bdaa723c42c
date added to LUP
2020-07-29 14:47:16
date last changed
2020-12-29 04:30:08
@article{d3962ffd-967b-4178-a310-9bdaa723c42c,
  abstract     = {<p>Literature and experience show that there are large discrepancies between the calculated and measured building energy usages, where user-related parameters are significant factors with regard to energy use in low-energy buildings. Furthermore, the difficulties encountered when quantifying these parameters compound these discrepancies. The main aim of this study was to provide feedback that would help the building industry and research communities to predict more accurately the impact of the user-related parameters on energy performance. The results of the study would, subsequently, contribute to minimizing the discrepancies between calculated and measured energy use. This article analyses simulated building energy use based on randomly chosen combinations of measured user-related parameters in three recently built low-energy schools in Sweden. The results show that energy performance can span from 30 to 160 kWh/(m2 y) simply by varying the combination of previously measured user-related parameters in building energy simulations. The study shows that the set points for indoor air temperatures during the heating season and the energy required to run a demand-controlled ventilation system have an extensive influence, while tenant electricity use has a slightly lower influence on building energy use. Variations in occupancy rates and energy for hot water usage have the smallest influences on building energy use.</p>},
  author       = {Simanic, Branko and Nordquist, Birgitta and Bagge, Hans and Johansson, Dennis},
  issn         = {1996-1073},
  language     = {eng},
  number       = {11},
  publisher    = {MDPI AG},
  series       = {Energies},
  title        = {Influence of user-related parameters on calculated energy use in low-energy school buildings},
  url          = {http://dx.doi.org/10.3390/en13112985},
  doi          = {10.3390/en13112985},
  volume       = {13},
  year         = {2020},
}