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Defrosting and Frost Protection Measurements of Heat Recovery in Cold Climate

Johansson, D. LU ; Wahlström, A. LU and Dahlblom, M. LU (2019) In IOP Conference Series: Earth and Environmental Science 352.
Abstract

The installation of technical solutions for heat recovery from the ventilation air is a very important step, both with respect to improving the indoor climate and as an energy-saving measure. Ventilation without heat recovery use a substantial part of an entire building's heating use, especially if the building is a low energy building. To realize a large implementation of heat recovery property owners must increase their knowledge about how these systems work and they must be able to rely on them functioning properly. The function and performance of a ventilation system when it comes to heat recovery can be a problem as soon as temperatures drop far below zero. When freezing occurs some form of defrosting is required and this can lead... (More)

The installation of technical solutions for heat recovery from the ventilation air is a very important step, both with respect to improving the indoor climate and as an energy-saving measure. Ventilation without heat recovery use a substantial part of an entire building's heating use, especially if the building is a low energy building. To realize a large implementation of heat recovery property owners must increase their knowledge about how these systems work and they must be able to rely on them functioning properly. The function and performance of a ventilation system when it comes to heat recovery can be a problem as soon as temperatures drop far below zero. When freezing occurs some form of defrosting is required and this can lead to indoor climate problems and to little or no heat recovery being obtained, which will reduce the energy efficiency and, at the same time, may compromise moisture safety. The goal of this project is to increase knowledge about how heat recovery systems for residential buildings with respect to defrosting and frost protection measures in heat exchangers. The knowledge can thereafter be used to develop effective defrosting strategies and frost protection measures so that the energy use and power requirements are minimized. Measurements were performed for heat recovery systems placed in dwellings in north Sweden to investigate occurrence of frost formation. The paper will present these measurements and some comparing simulations which can serve as a basis for further development of good defrosting strategies.

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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
host publication
1st Nordic conference on Zero Emission and Plus Energy Buildings 6–7 November 2019, Trondheim, Norway
series title
IOP Conference Series: Earth and Environmental Science
volume
352
article number
012027
publisher
IOP Publishing
external identifiers
  • scopus:85075019059
ISSN
1755-1307
DOI
10.1088/1755-1315/352/1/012027
language
English
LU publication?
yes
id
2b0cf39e-9a79-47ca-aca9-89db20e1732f
date added to LUP
2019-12-03 12:43:39
date last changed
2019-12-04 07:24:42
@inproceedings{2b0cf39e-9a79-47ca-aca9-89db20e1732f,
  abstract     = {<p>The installation of technical solutions for heat recovery from the ventilation air is a very important step, both with respect to improving the indoor climate and as an energy-saving measure. Ventilation without heat recovery use a substantial part of an entire building's heating use, especially if the building is a low energy building. To realize a large implementation of heat recovery property owners must increase their knowledge about how these systems work and they must be able to rely on them functioning properly. The function and performance of a ventilation system when it comes to heat recovery can be a problem as soon as temperatures drop far below zero. When freezing occurs some form of defrosting is required and this can lead to indoor climate problems and to little or no heat recovery being obtained, which will reduce the energy efficiency and, at the same time, may compromise moisture safety. The goal of this project is to increase knowledge about how heat recovery systems for residential buildings with respect to defrosting and frost protection measures in heat exchangers. The knowledge can thereafter be used to develop effective defrosting strategies and frost protection measures so that the energy use and power requirements are minimized. Measurements were performed for heat recovery systems placed in dwellings in north Sweden to investigate occurrence of frost formation. The paper will present these measurements and some comparing simulations which can serve as a basis for further development of good defrosting strategies.</p>},
  author       = {Johansson, D. and Wahlström, A. and Dahlblom, M.},
  booktitle    = {1st Nordic conference on Zero Emission and Plus Energy Buildings 6–7 November 2019, Trondheim, Norway},
  issn         = {1755-1307},
  language     = {eng},
  publisher    = {IOP Publishing},
  series       = {IOP Conference Series: Earth and Environmental Science},
  title        = {Defrosting and Frost Protection Measurements of Heat Recovery in Cold Climate},
  url          = {http://dx.doi.org/10.1088/1755-1315/352/1/012027},
  doi          = {10.1088/1755-1315/352/1/012027},
  volume       = {352},
  year         = {2019},
}