Thermal properties of adobe employed in Peruvian rural areas: Experimental results and numerical simulation of a traditional bio-composite material

Abanto, Ginés A.; Karkri, Mustapha; Lefèbvre, Gilles; Horn, Manfred; Solis, J. L.; Gómez, Mónica

doi:10.1016/j.cscm.2017.02.001

Cited by 34 publications

(31 citation statements)

References 14 publications

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“…Neri et al [80] analyzed the effect of phase change materials (PCM) on indoor temperatures. Moreover, Sambu et al [81] studied the effect of wall thickness on energy efficiency, while Abanto et al [82] tested this effect in adobe as a traditional material. Thus, research to date has mainly concentrated on selecting insulation materials [83], and a lack of information about proposing a method to select insulation placement can be considered a gap for designers.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study of Traditional and Contemporary Building Envelope Construction Techniques in Terms of Thermal Comfort and Energy Efficiency in Hot and Humid Climates

Lotfabadi

Hançer

2019

Sustainability

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Expectations of traditional and contemporary buildings are different in terms of thermal comfort. Traditional buildings mostly achieve comfort through passive means, without HVAC support, but old levels of thermal satisfaction do not meet today’s expectations, although their passive thermal performances are notable for contemporary building designs. In this regard, the current study tries to investigate the possibility of comparing traditional and contemporary buildings’ construction techniques to achieve thermal comfort from an architectural point of view. In other words, is it possible to achieve passive building design by considering vernacular architecture principals as a reference? Likewise, how well can architects define insulation layers in contemporary construction surfaces in hot and humid climates? To this end, a dynamic, numerical, thermal calculation case study has been modeled in Famagusta, Northern Cyprus, to answer the above-mentioned questions. A mixed-use mode benefitting free-run periods is proposed and compared with a mode providing 24 hours of air-conditioning in different scenarios using the same initial settings. Thus, different floor-to-ceiling heights, insulation placements and indoor conditions have been tested separately in both winter and summer periods. The results show that thermal comfort can be achieved in free-run periods only during a limited percentage of the year. Furthermore, although increasing building heights may lead to a rise in the free-run periods, in contemporary buildings it increases the total energy usage of the buildings between 6% and 9% in the mixed mode. Therefore, vernacular architecture strategies are proper in their own context. However, this energy usage can still be controlled and optimized by such considerations as insulation material placement. In this regard, the best envelope properties for different building functions are proposed for application in hot and humid climates.

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Section: Introductionmentioning

confidence: 99%

A Comparative Study of Traditional and Contemporary Building Envelope Construction Techniques in Terms of Thermal Comfort and Energy Efficiency in Hot and Humid Climates

Lotfabadi

Hançer

2019

Sustainability

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“…Nevertheless, no reference was found concerning the effect of plant aggregate content on the thermal inertia parameters of earth products. Abanto et al [26] measured specific heat capacity and thermal diffusivity of different Peruvian adobe but no relation could be established between these properties and the adobe straw content.…”

Section: Introductionmentioning

confidence: 99%

Hygrothermal properties of unfired earth bricks: Effect of barley straw, hemp shiv and corn cob addition

Laborel-Préneron

Magniont

2018

Energy and Buildings

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Earth is a material presenting good hygric properties, which is an important point as comfort and indoor air quality have become major issues. Nowadays, the energy efficiency of a construction is also crucial, but the thermal insulation provided by an earth brick is quite low. Therefore, some plant aggregates were added to lighten the material, thus decreasing its thermal conductivity. The hygrothermal properties of seven formulations made of earth with 0, 3 or 6% by weight content of barley straw, hemp shiv or corn cob were assessed. The properties determined were thermal conductivity, specific heat capacity, water vapour permeability, and sorption-desorption isotherms measured with the saturated salt solution and DVS methods. The theoretical MBV was also calculated. The study showed a large decrease in thermal conductivity when a large volume of plant aggregates was added while plant aggregates incorporation conversely affected the thermal inertia parameters.Concerning water vapour permeability, as earth is a very permeable material, the addition of plant aggregates did not improve this property. The sorption capacity of bio-based earth materials was slightly increased in comparison with earth alone. Finally, the calculated MBV showed the excellent buffering capacity of this kind of material, with and without plant aggregates.

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“…Their thermal behaviour was studied by simulation modelling. A new research method widely used to describe and predict the behaviour of different materials and/or constructions [10,14].…”

Section: Introductionmentioning

confidence: 99%

A Comparative Thermal Analysis of Walls Composed of Traditional and Alternative Building Materials

Petkova-Slipets

Yordanov

Zlateva

2020

Civil and Environmental Engineering

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This research aims at comparing the thermal performance of walls made from traditional and alternative building materials. The experimental study involves five types of walls were studied based on perforated ceramic bricks and a mixture of clay, sand with various straw proportions. Specialized software and the finite element method (FEA) were employed for modelling of the thermal processes and their visualization for the different types of walls. A simulation modelling algorithm was developed. The models developed show very good convergence of the results and provide for subsequent design and thermal calculation of constructions made by environmentally friendly materials.

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Thermal properties of adobe employed in Peruvian rural areas: Experimental results and numerical simulation of a traditional bio-composite material

Cited by 34 publications

References 14 publications

A Comparative Study of Traditional and Contemporary Building Envelope Construction Techniques in Terms of Thermal Comfort and Energy Efficiency in Hot and Humid Climates

A Comparative Study of Traditional and Contemporary Building Envelope Construction Techniques in Terms of Thermal Comfort and Energy Efficiency in Hot and Humid Climates

Hygrothermal properties of unfired earth bricks: Effect of barley straw, hemp shiv and corn cob addition

A Comparative Thermal Analysis of Walls Composed of Traditional and Alternative Building Materials

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