Abstract

Three wall panels of identical calculated U-value were simultaneously assessed in a large dual environmental chamber under a number of steady state and dynamic hygrothermal boundary conditions. This study used large-scale wall elements under identical controlled conditions in order to eliminate uncontrollable variables normally encountered in full-scale studies. The following panels were tested: Mineral Wool Panel, Wood Fibre Panel and the Biond Panel (an assembly of wood fibre and hemp-lime). Within the limits of the error range of the calculation, the measured U-value was same for all test panels when assessed under steady state and dynamic hygrothermal boundary conditions. It was however observed that in a boundary condition simulating intermittent heating, the Biond panel showed the highest heat storing and releasing capability whereas the Mineral Wool Panel showed the lowest. In terms of moisture management, the Biond panel exhibited the highest moisture dampening ability within the panel structure. Higher thermal and hygric inertia of the Biond panel may be useful in mitigating overheating of dwellings and reducing interstitial condensation.
LanguageEnglish
Pages76-91
JournalEnergy and Buildings
Volume165
DOIs
StatusPublished - 31 Jan 2018

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Mineral wool
Hemp
Lime
Wood
Boundary conditions
Fibers
Moisture
Environmental chambers
Condensation
Heating
Hot Temperature

Keywords

  • Mineral wool
  • Wood Fibre
  • Biond
  • U-value
  • Bio-based insulation
  • Hemp-lime
  • Thermal Conductivity
  • Moisture

ASJC Scopus subject areas

  • Building and Construction

Cite this

@article{2b08d6d54367408fbd0e16fc1a412b7a,
title = "An experimental investigation into the comparative hygrothermal performance of wall panels incorporating wood fibre, mineral wool and hemp-lime",
abstract = "Three wall panels of identical calculated U-value were simultaneously assessed in a large dual environmental chamber under a number of steady state and dynamic hygrothermal boundary conditions. This study used large-scale wall elements under identical controlled conditions in order to eliminate uncontrollable variables normally encountered in full-scale studies. The following panels were tested: Mineral Wool Panel, Wood Fibre Panel and the Biond Panel (an assembly of wood fibre and hemp-lime). Within the limits of the error range of the calculation, the measured U-value was same for all test panels when assessed under steady state and dynamic hygrothermal boundary conditions. It was however observed that in a boundary condition simulating intermittent heating, the Biond panel showed the highest heat storing and releasing capability whereas the Mineral Wool Panel showed the lowest. In terms of moisture management, the Biond panel exhibited the highest moisture dampening ability within the panel structure. Higher thermal and hygric inertia of the Biond panel may be useful in mitigating overheating of dwellings and reducing interstitial condensation.",
keywords = "Mineral wool, Wood Fibre, Biond, U-value, Bio-based insulation, Hemp-lime, Thermal Conductivity, Moisture",
author = "E. Latif and R.M.H. Lawrence and A.D. Shea and P. Walker",
year = "2018",
month = "1",
day = "31",
doi = "10.1016/j.enbuild.2018.01.028",
language = "English",
volume = "165",
pages = "76--91",
journal = "Energy and Buildings",
issn = "0378-7788",
publisher = "Elsevier",

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TY - JOUR

T1 - An experimental investigation into the comparative hygrothermal performance of wall panels incorporating wood fibre, mineral wool and hemp-lime

AU - Latif,E.

AU - Lawrence,R.M.H.

AU - Shea,A.D.

AU - Walker,P.

PY - 2018/1/31

Y1 - 2018/1/31

N2 - Three wall panels of identical calculated U-value were simultaneously assessed in a large dual environmental chamber under a number of steady state and dynamic hygrothermal boundary conditions. This study used large-scale wall elements under identical controlled conditions in order to eliminate uncontrollable variables normally encountered in full-scale studies. The following panels were tested: Mineral Wool Panel, Wood Fibre Panel and the Biond Panel (an assembly of wood fibre and hemp-lime). Within the limits of the error range of the calculation, the measured U-value was same for all test panels when assessed under steady state and dynamic hygrothermal boundary conditions. It was however observed that in a boundary condition simulating intermittent heating, the Biond panel showed the highest heat storing and releasing capability whereas the Mineral Wool Panel showed the lowest. In terms of moisture management, the Biond panel exhibited the highest moisture dampening ability within the panel structure. Higher thermal and hygric inertia of the Biond panel may be useful in mitigating overheating of dwellings and reducing interstitial condensation.

AB - Three wall panels of identical calculated U-value were simultaneously assessed in a large dual environmental chamber under a number of steady state and dynamic hygrothermal boundary conditions. This study used large-scale wall elements under identical controlled conditions in order to eliminate uncontrollable variables normally encountered in full-scale studies. The following panels were tested: Mineral Wool Panel, Wood Fibre Panel and the Biond Panel (an assembly of wood fibre and hemp-lime). Within the limits of the error range of the calculation, the measured U-value was same for all test panels when assessed under steady state and dynamic hygrothermal boundary conditions. It was however observed that in a boundary condition simulating intermittent heating, the Biond panel showed the highest heat storing and releasing capability whereas the Mineral Wool Panel showed the lowest. In terms of moisture management, the Biond panel exhibited the highest moisture dampening ability within the panel structure. Higher thermal and hygric inertia of the Biond panel may be useful in mitigating overheating of dwellings and reducing interstitial condensation.

KW - Mineral wool

KW - Wood Fibre

KW - Biond

KW - U-value

KW - Bio-based insulation

KW - Hemp-lime

KW - Thermal Conductivity

KW - Moisture

U2 - 10.1016/j.enbuild.2018.01.028

DO - 10.1016/j.enbuild.2018.01.028

M3 - Article

VL - 165

SP - 76

EP - 91

JO - Energy and Buildings

T2 - Energy and Buildings

JF - Energy and Buildings

SN - 0378-7788

ER -