Determination of hygrothermal parameters of experimental and commercial bio-based insulation materials
The development and application of bio-based insulation materials can contribute to the minimization of the environmental impacts of buildings through reduction of embodied and in-use energy demand, in addition to many other major impacts such as resource depletion and waste generation. The hygrothe...
| Authors: | , , , , |
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| Format: | article |
| Publication Date: | 2016 |
| Country: | España |
| Institution: | Universitat Politècnica de Catalunya (UPC) |
| Repository: | UPCommons. Portal del coneixement obert de la UPC |
| Language: | English |
| OAI Identifier: | oai:upcommons.upc.edu:2117/90784 |
| Online Access: | https://hdl.handle.net/2117/90784 https://dx.doi.org/10.1016/j.conbuildmat.2016.07.106 |
| Access Level: | Open access |
| Keyword: | Dwellings--Insulation Sustainable construction Bio-based materials Thermal insulation Hygrothermal performance Moisture buffering Transient modelling Barley straw Corn Pith Habitatges--Aïllament Construcció sostenible Àrees temàtiques de la UPC::Edificació::Materials de construcció Àrees temàtiques de la UPC::Enginyeria dels materials::Assaig de materials |
| Summary: | The development and application of bio-based insulation materials can contribute to the minimization of the environmental impacts of buildings through reduction of embodied and in-use energy demand, in addition to many other major impacts such as resource depletion and waste generation. The hygrothermal performance of natural building materials has direct and indirect impacts on moderating indoor environmental conditions and can contribute to energy savings provided that such aspects are taken into account during the design and construction phases. This requires in-depth knowledge of the thermal and hygroscopic properties of the materials and their dependence on the moisture content. In this paper, the hygrothermal properties of six insulation materials is determined; four are commercially available materials while the other two are experimental materials based on crop by-products and natural binders. The influence of relative humidity on such properties is analysed. Moreover, the experimental Moisture Buffer Values are obtained for the six insulations, according to the protocol of the standard ISO 24353. Finally, a mass and heat coupled model is numerically solved to simulate this protocol for two of the materials, obtaining a good agreement with the experimental results. |
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