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Simulations of moisture gradients in wood subjected to changes in relative humidity and temperature due to climate change

Melin, Charlotta Bylund; Hagentoft, Carl Eric; Holl, Kristina; Nik, Vahid M. LU and Kilian, Ralf (2018) In Geosciences (Switzerland) 8(10).
Abstract

Climate change is a growing threat to cultural heritage buildings and objects. Objects housed in historic buildings are at risk because the indoor environments in these buildings are difficult to control and often influenced by the outdoor climate. Hygroscopic materials, such as wood, will gain and release moisture during changes in relative humidity and temperature. These changes cause swelling and shrinkage, which may result in permanent damage. To increase the knowledge of climate-induced damage to heritage objects, it is essential to monitor moisture transport in wood. Simulation models need to be developed and improved to predict the influence of climate change. In a previous work, relative humidity and temperature was monitored at... (More)

Climate change is a growing threat to cultural heritage buildings and objects. Objects housed in historic buildings are at risk because the indoor environments in these buildings are difficult to control and often influenced by the outdoor climate. Hygroscopic materials, such as wood, will gain and release moisture during changes in relative humidity and temperature. These changes cause swelling and shrinkage, which may result in permanent damage. To increase the knowledge of climate-induced damage to heritage objects, it is essential to monitor moisture transport in wood. Simulation models need to be developed and improved to predict the influence of climate change. In a previous work, relative humidity and temperature was monitored at different depths inside wooden samples subjected to fluctuating climate over time. In this article, two methods, the hygrothermal building simulation software WUFI® Pro and the Simplified model, were compared in relation to the measured data. The conclusion was that both methods can simulate moisture diffusion and transport in wooden object with a sufficient accuracy. Using the two methods for predicted climate change data show that the mean RH inside wood is rather constant, but the RH minimum and maximum vary with the predicted scenario and the type of building used for the simulation.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Climate change, Climate variations, Experimental research, Hygrothermal simulation models, Measurements, Moisture transport, Relative humidity, Typical and extreme weather conditions, Wood
in
Geosciences (Switzerland)
volume
8
issue
10
publisher
MDPI AG
external identifiers
  • scopus:85055746634
DOI
10.3390/geosciences8100378
language
English
LU publication?
yes
id
ca9b2cfc-5d20-498b-b7f6-c3bd2e44d20d
date added to LUP
2018-11-15 14:11:57
date last changed
2019-02-20 11:36:16
@article{ca9b2cfc-5d20-498b-b7f6-c3bd2e44d20d,
  abstract     = {<p>Climate change is a growing threat to cultural heritage buildings and objects. Objects housed in historic buildings are at risk because the indoor environments in these buildings are difficult to control and often influenced by the outdoor climate. Hygroscopic materials, such as wood, will gain and release moisture during changes in relative humidity and temperature. These changes cause swelling and shrinkage, which may result in permanent damage. To increase the knowledge of climate-induced damage to heritage objects, it is essential to monitor moisture transport in wood. Simulation models need to be developed and improved to predict the influence of climate change. In a previous work, relative humidity and temperature was monitored at different depths inside wooden samples subjected to fluctuating climate over time. In this article, two methods, the hygrothermal building simulation software WUFI® Pro and the Simplified model, were compared in relation to the measured data. The conclusion was that both methods can simulate moisture diffusion and transport in wooden object with a sufficient accuracy. Using the two methods for predicted climate change data show that the mean RH inside wood is rather constant, but the RH minimum and maximum vary with the predicted scenario and the type of building used for the simulation.</p>},
  articleno    = {378},
  author       = {Melin, Charlotta Bylund and Hagentoft, Carl Eric and Holl, Kristina and Nik, Vahid M. and Kilian, Ralf},
  keyword      = {Climate change,Climate variations,Experimental research,Hygrothermal simulation models,Measurements,Moisture transport,Relative humidity,Typical and extreme weather conditions,Wood},
  language     = {eng},
  month        = {10},
  number       = {10},
  publisher    = {MDPI AG},
  series       = {Geosciences (Switzerland)},
  title        = {Simulations of moisture gradients in wood subjected to changes in relative humidity and temperature due to climate change},
  url          = {http://dx.doi.org/10.3390/geosciences8100378},
  volume       = {8},
  year         = {2018},
}