Advanced

A Net ZEB case study – Experiences from freezing in ventilation heat exchanger and measured energy performance

Berggren, Björn LU (2019) In Springer Proceedings in Energy p.613-622
Abstract
Net Zero Energy Buildings constitute one measure to reduce energy use and increase use of energy from renewable sources. Hence, it is important share knowledge and experiences from completed projects. This case study show that it is possible to build Net Zero Energy Buildings with existing techniques.
However, a common strategy to prevent or limit the build-up of ice and frost in
ventilation heat exchangers, Supply fan shut off, were not suitable this project, since it is air tight buildings. After occurring problems in the first winter, ventilation pre-heater were installed to prevent the build-up of ice and frost. Thanks to placement of temperature sensor after the pre-heater, the increased energy use for pre-heater may be... (More)
Net Zero Energy Buildings constitute one measure to reduce energy use and increase use of energy from renewable sources. Hence, it is important share knowledge and experiences from completed projects. This case study show that it is possible to build Net Zero Energy Buildings with existing techniques.
However, a common strategy to prevent or limit the build-up of ice and frost in
ventilation heat exchangers, Supply fan shut off, were not suitable this project, since it is air tight buildings. After occurring problems in the first winter, ventilation pre-heater were installed to prevent the build-up of ice and frost. Thanks to placement of temperature sensor after the pre-heater, the increased energy use for pre-heater may be expected to be low, roughly 1 kWh/m2a. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Net ZEB, Energy use, Freezing, Ventilation
host publication
Cold Climate HVAC 2018. CCC 2018
series title
Springer Proceedings in Energy
editor
Johansson, Dennis ; Bagge, Hans and Wahlström, Åsa
pages
10 pages
ISBN
978-3-030-00661-7
978-3-030-00662-4
DOI
10.1007/978-3-030-00662-4_51
language
English
LU publication?
yes
id
c1d7a01e-f593-4353-a423-4aacbef136c2
date added to LUP
2019-04-30 19:58:11
date last changed
2020-03-25 09:11:43
@inproceedings{c1d7a01e-f593-4353-a423-4aacbef136c2,
  abstract     = {Net Zero Energy Buildings constitute one measure to reduce energy use and increase use of energy from renewable sources. Hence, it is important share knowledge and experiences from completed projects. This case study show that it is possible to build Net Zero Energy Buildings with existing techniques. <br/>However, a common strategy to prevent or limit the build-up of ice and frost in <br/>ventilation heat exchangers, Supply fan shut off, were not suitable this project, since it is air tight buildings. After occurring problems in the first winter, ventilation pre-heater were installed to prevent the build-up of ice and frost. Thanks to placement of temperature sensor after the pre-heater, the increased energy use for pre-heater may be expected to be low, roughly 1 kWh/m2a.},
  author       = {Berggren, Björn},
  booktitle    = {Cold Climate HVAC 2018. CCC 2018},
  editor       = {Johansson, Dennis and Bagge, Hans and Wahlström, Åsa},
  isbn         = {978-3-030-00661-7},
  language     = {eng},
  pages        = {613--622},
  series       = {Springer Proceedings in Energy},
  title        = {A Net ZEB case study – Experiences from freezing in ventilation heat exchanger and measured energy performance},
  url          = {http://dx.doi.org/10.1007/978-3-030-00662-4_51},
  doi          = {10.1007/978-3-030-00662-4_51},
  year         = {2019},
}