Development and performance evaluation of natural thermal-insulation materials composed of renewable resources

Korjenić, Azra; Petránek, Vít; Zach, Jiří; Hroudová, Jitka

doi:10.1016/j.enbuild.2011.06.012

Cited by 328 publications

(116 citation statements)

References 4 publications

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“…This means that such materials have the capacity to accumulate or release moisture in their internal porous structure by adsorption or desorption from the environment [3]. The amount of moisture accumulated is material specific and dependent on the relative humidity and the temperature of the environment.…”

Section: Introductionmentioning

confidence: 99%

Determination of hygrothermal parameters of experimental and commercial bio-based insulation materials

Palumbo

Palacio

Holcroft

et al. 2016

Construction and Building Materials

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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 byproducts 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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Section: Introductionmentioning

confidence: 99%

Determination of hygrothermal parameters of experimental and commercial bio-based insulation materials

Palumbo

Palacio

Holcroft

et al. 2016

Construction and Building Materials

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show abstract

“…On the contrary, for instance, alkali-bound insulators obtained simply by being pressed or bound by means of bicomponent fibres, can be used in the structures with a lower mechanical load, putting relatively low demands on the production technology and for this reason, they can find use also in industrially less developed countries. 2,9 …”

Section: Resultsmentioning

confidence: 99%

“…The experiments performed during the previous research revealed that these materials show properties comparable with the synthetic insulation materials available on the market. 9 However, in terms of the thermal-insulation properties, these natural fibre-based materials exhibit a different hygrothermal behaviour due to different structures of the insulations and also a low thermal conductivity of the natural fibres compared to the glass or mineral ones.…”

Section: Introductionmentioning

confidence: 99%

Study of the properties and hygrothermal behaviour of alternative insulation materials based on natural fibres

Zach¹,

Reif²,

Hroudová³

2016

Mater. Tehnol.

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The paper describes the results of a research focused on the development of natural thermal and acoustic insulation materials. They are mainly materials based on locally available agricultural waste (mainly in the third-world countries). In particular, this waste includes stems of rice and other plants. The paper describes the behaviour of these materials under different humidity conditions and the possibility to influence their properties by varying the ratio between organic and inorganic binders. Using the results, general conditions for the suitability of the application of these materials in building constructions were defined. Keywords: natural fibres, moisture content, thermal conductivity, rice stems, cotton stems, thermal insulation lanek opisuje rezultate raziskav usmerjenih v razvoj naravnih materialov za toplotno in akusti~no izolacijo. To so prete`no materiali, ki predstavljajo lokalno dosegljive kmetijske odpadke (ve~inoma v tretjem svetu). To so zlasti stebla ri`a in drugih rastlin.^lanek opisuje obna{anje teh materialov pri razli~nih pogojih vla`nosti in mo`nosti za vplivanje na njihove lastnosti pri razli~nih razmerjih organskih in anorganskih veziv. Na podlagi rezultatov so bili dolo~eni splo{ni pogoji za primernost in uporabnost teh materialov v gradbeni{tvu.

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“…The main disadvantage of loose heat insulation is selfcompaction effect during the exploitation [6]. Depending on the structure of natural fiber materials, they have higher moisture sensitivity comparing to mineral materials [7]. There is also necessary to provide fire resistance and biological persistence, especially materials, which are made of cellulosic fibres [8].…”

Section: Introductionmentioning

confidence: 99%

Composite bulk Heat Insulation Made of loose Mineral and Organic Aggregate

Namsone¹,

Šahmenko²

2015

Construction Science

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-The task of building energy-efficiency is getting more important. Every house owner wishes to save up exploitation costs of heating, cooling, hot water production, ventilation, etc. and find cost-effective investments. One of the ways to reduce greenhouse gas emissions (GHGE) is to minimize the heat transfer through the building by insulating it. Loose heat insulation is a good alternative to traditional board insulation, it is simple in use and cost-effective. Main drawback of this insulation is tendency to compact during exploitation. In the frame of this research composite loose heat insulation is elaborated, consisting on porous mineral foamed glass aggregate and local organic fiber materials (hemp and flaxen shives). Composite bulk insulation is an alternative solution which combines heat insulating properties and mechanical stability.

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Development and performance evaluation of natural thermal-insulation materials composed of renewable resources

Cited by 328 publications

References 4 publications

Determination of hygrothermal parameters of experimental and commercial bio-based insulation materials

Determination of hygrothermal parameters of experimental and commercial bio-based insulation materials

Study of the properties and hygrothermal behaviour of alternative insulation materials based on natural fibres

Composite bulk Heat Insulation Made of loose Mineral and Organic Aggregate

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