Experimental data set for validation of heat, air and moisture transport models of building envelopes

Desta, Tadiwos Zerihun; Langmans, Jelle; Roels, Staf

doi:10.1016/j.buildenv.2010.11.002

Cited by 68 publications

(35 citation statements)

References 12 publications

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“…For example, it is well known that the sorption isotherm presents a hysteresis cycle [43][44][45][46], which is likely to impact vapour transfer. However, it is not straightforward to model and many authors are still using the sorption isotherm only [39,47,48]. In the present work, as the numerical results rely on preliminary measurements, we propose to use a simplified approach that neglects the hysteresis.…”

Section: Buffering Potential Of Hygroscopic Materialsmentioning

confidence: 99%

From the experimental characterization of the hygrothermal properties of straw-clay mixtures to the numerical assessment of their buffering potential

Labat

Magniont

Oudhof³

et al. 2016

Building and Environment

112

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. From the experimental characterization of the hygrothermal properties of straw-clay mixtures to the numerical assessment of their buffering potential. Building and Environment, Elsevier, 2016, 97, pp.69 -81. 10.1016/j.buildenv.2015 1 From the experimental characterization of the hygrothermal properties of straw-clay mixtures to the numerical assessment of their buffering potential ABSTRACTThe development of innovative materials has to respond to both environmental and energy concerns. Bio-based materials are relevant because they are made from renewable raw materials and are carbon neutral. Similarly, unprocessed earth has a very low embodied energy. In this paper, the basic hygrothermal properties of straw-clay samples provided by two French companies were determined. Mixes with densities lower than 450 kg.m -3 would be suitable for use as self-insulating material in current construction. In addition, the material showed a high sorption capacity and very high water vapour permeability. The measurements were then implemented in a numerical model in order to simulate the hygric response of a small room. The straw-clay mixture was found to have a moisture buffering effect of the same magnitude as walls made of hemp concrete and largely higher than conventional walls. The influence of various indoor finishing materials was investigated through additional simulations.

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Section: Buffering Potential Of Hygroscopic Materialsmentioning

confidence: 99%

From the experimental characterization of the hygrothermal properties of straw-clay mixtures to the numerical assessment of their buffering potential

Labat

Magniont

Oudhof³

et al. 2016

Building and Environment

112

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show abstract

“…Koci et al [20] also conducted a computational analysis to investigate the thermal insulation for building envelopes under various climatic conditions of Europe. In another study [21], experimental studies were carried out on heat, air, and moisture transfer through a full scale building envelope wall under atmospheric conditions. Harrestrup and Svendsen [22] conducted full-scale post-renovation measurements of a heritage building, focusing on energy savings and moisture reduction.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Thermal Behaviors in Window Systems by Monitoring of Surface Condensation Using Full-Scale Measurements and Simulation Tools

Hong

Kim

2016

Energies

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Abstract:The aim of the present study was to investigate the thermal performance of window systems using full-scale measurements and simulation tools. A chamber was installed on the balcony of an apartment to control the temperatures which can create condensation on the interior surfaces of window systems. The condensation process on the window was carefully scrutinized when outdoor and indoor temperature and indoor relative humidity ranged from −15 • C to −20 • C, 23 • C to 24 • C, and 50% to 65%, respectively. The results of these investigations were analyzed to determine how the moisture is influenced by changing temperatures. It appears that the glass-edge was highly susceptible to the temperature variations and the lowest temperature on the glass edge was caused by the heat transfer through the spacer, between the two glass panels of the window. The results from the simulation used in this study confirm that the thermal performance of window systems can be improved the use of super insulated or thermally broken spacers. If the values of the indoor humidity and temperature are given, then the outdoor temperature when condensation forms can be obtained by using Temperature Difference Ratio (TDR). This methodology can be employed to predict the possible occurrence of condensation.

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“…Some examples of such detailed measurements can be found in Refs. [6,32,36]. In our case however, the use of a ventilated cladding and the rising of the floor above the ground strongly reduced the risk for high relative humidity to occur within the walls.…”

Section: Materials Propertiesmentioning

confidence: 70%

“…[2] for earth bricks and in Ref. [6] for different construction materials. Therefore, the global thermal conductivity can be expressed as in (1).…”

Section: Materials Propertiesmentioning

confidence: 99%

“…A lightweight building envelope wall exposed to real atmospheric conditions is reported in Ref. [4,6] have presented an experimental procedure developed to study inward vapour transport in wood-frame walls resulting from hightemperature gradients. At the building scale [11], have monitored heat and moisture transfer in various wall assemblies exposed to real climate for 3 years.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Dynamic coupling between vapour and heat transfer in wall assemblies: Analysis of measurements achieved under real climate

Labat

Woloszyn

Garnier

et al. 2015

Building and Environment

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Experimental data set for validation of heat, air and moisture transport models of building envelopes

Cited by 68 publications

References 12 publications

From the experimental characterization of the hygrothermal properties of straw-clay mixtures to the numerical assessment of their buffering potential

From the experimental characterization of the hygrothermal properties of straw-clay mixtures to the numerical assessment of their buffering potential

Experimental Investigation of Thermal Behaviors in Window Systems by Monitoring of Surface Condensation Using Full-Scale Measurements and Simulation Tools

Dynamic coupling between vapour and heat transfer in wall assemblies: Analysis of measurements achieved under real climate

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