Experimental study of thermal properties of a new ecological building material based on peanut shells and plaster

Lamrani, Mohamed; Laaroussi, Najma; Khabbazi, Abdelhamid; Khalfaoui, Mohamed; Garoum, Mohammed; Feiz, Amir Ali

doi:10.1016/j.cscm.2017.09.006

Cited by 39 publications

(16 citation statements)

References 22 publications

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“…The exact meaning of heat diffusion is the transmission of the temperature difference in the function of time. For instance, in a pure metal sheet (e.g., Al, Cu), having many free electrons, the heat diffuses through faster than in a fibrous insulation blanket such as aerogel [25][26][27].…”

Section: Thermal Diffusivitymentioning

confidence: 99%

Thermal Diffusion in Fibrous Aerogel Blankets

Lakatos

Trník

2020

Energies

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Nowadays, the usage of thermal insulation materials is widespread not only in the building sector but also in the vehicle industry. The application of fibrous or loose-fill insulation materials like glass wool or mineral wool as well as aerogel is well known. Aerogel-based materials are among the best solid materials for thermal insulation available today; they are prepared through a sol–gel process. For building walls, the glass-fiber-enhanced types are the frequently used ones. They are prepared by adding the liquid–solid solution to the fibrous batting, which is called a sol–gel process. In the present paper, the changes in the most important building physical properties of aerogel blankets after thermal annealing are presented. The samples were subjected to isochronal heat treatments from 70 to 210 °C for 24 h. The changes in the thermal conductivity were followed by Holometrix Lambda heat flow meter, and differential scanning calorimetry results were also recorded. From the measured values, together with the densities, the most important thermal properties were calculated, such as thermal resistance, diffusivity, effusivity (heat absorption), and thermal inertia. In this paper, we attempt to clarify the role played by thermal annealing in the transient thermal properties of aerogel materials. Besides presenting the measurement results, a theoretical background is given. The investigations of not only the steady-state but also the transient thermal parameters of the materials are momentous at the design stage.

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Section: Thermal Diffusivitymentioning

confidence: 99%

Thermal Diffusion in Fibrous Aerogel Blankets

Lakatos

Trník

2020

Energies

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“…It describes how building materials respond to the ambient environment in the daily or seasonal cycle. It directly relates to the thermal comfort of the building occupants, as well as the energy consumed for heating or cooling [1,[4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

A High-Resolution Open Source Platform for Building Envelope Thermal Performance Assessment Using a Wireless Sensor Network

Lihakanga

Ding

Medero

et al. 2020

Sensors

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This paper presents an in-situ wireless sensor network (WSN) for building envelope thermal transmission analysis. The WSN is able to track heat flows in various weather conditions in real-time. The developed system focuses on long-term in-situ building material variation analysis, which cannot be readily achieved using current approaches, especially when the number of measurement hotspots is large. This paper describes the implementation of the proposed system using the heat flow method enabled through an adaptable and low-cost wireless network, validated via a laboratory experiment.

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“…A pesar de ser no alcanzar los valores de conductividad térmica tan buenos como en el caso de los paneles S, las propiedades aislantes de los paneles P-75, P-80 y P-100 son similares a las obtenidas en paneles de aislamiento térmico autoportantes comercializados en Europa de lana de madera, Heraklith® (Heraklith, n.d.). Si se comparan estos valores con otros paneles de aislamiento térmico alternativos que han sido investigados, los paneles P-80 y P-100 tienen mejor comportamiento térmico que los paneles con densidades similares elaborados con durian mezclado con coco (Khedari et al, 2001) o fibra de peciolo de palma datilera (Schiavoni et al, 2016), cáñamo (Walker and Pavía, 2014) o bambú (Nguyen et al, 2018), fibra de Hay (La Gennusa et al, 2017), cáscara de maní (Lamrani et al, 2017), mazorca de maíz (Paiva et al, 2011;J. Pinto et al, 2012), bagazo caña de azúcar (Liao, R., Xu, J., Umemura, 2016), tronco de coco (Etuk et al, 2005), residuo de tilo (Grohmann et al, 2019), Posidonia-Oceánica (Hamdaoui et al, 2018)o fibra de madera (Cetiner and Shea, 2018).…”

Section: Resultsunclassified

“…al., 2015; Liao, R., Xu, J., Umemura, 2016;Onésippe et al, 2010;Panyakaew and Fotios, 2011), el tallo del algodón(Zhou et al, 2010), el peciolo de la palma de dátiles y de aceite(Boukhattem et al, 2017;Lertwattanaruk and Suntijitto, 2015;Masri et al, 2018), la mazorca de maíz(Paiva et al, 2011;Jorge Pinto et al, 2012), el tallo de maíz(Binici et al, 2016), la fibra de coco(Asasutjarit et al, 2007), la cáscara de cacahuete(Lamrani et al, 2017), la cáscara de durian(Khedari et al, 2004), el tallo de arroz, la hoja de la piña(Asdrubali et al, 2015), tallos de girasol y fibras textiles recicladas(Binici et al, 2014). Otro tipo de biomasa estudiada como aislante térmico que es considera un residuo pero que no procede de procesos agroindustriales es el caso de las especies invasoras como la enea(Asdrubali et al, 2015) o el Jacinto de Agua.Los países en donde se centra la investigación en materiales de aislamiento térmico de origen vegetal son fundamentalmente Francia, Reino Unido e Italia; seguidos de países del sureste asiático como Tailandia o India.…”

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El Jacinto de Agua como material de construcción en África Subsahariana

Ruiz¹

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Influencia de los componentes minoritarios en las reacciones de hidratación…………….…………….Estudio de la fijación en morteros de los elementos contaminantes de las cenizas………….…………. 2.5. Conclusiones parciales …………………………………………………………….……... 3. Fibra del peciolo deJacinto de Agua……………………………………………….….. 3.1. Descripción del proceso de obtención de las fibras…….……………………………… 3.2. Caracterización química……………………………………….…………………………. 3.3. Caracterización física……………………………………………….…………………….. Observación microscópica………………………………………………………….…………………… Densidad……………………………………………………………………………….……………….. Contenido de humedad…………………………………………………………………….…………… Absorción de agua…………………………………………………………………………….………… 3.4. Conclusiones parciales……………………………………………………………….…… 4. Conclusiones acerca del potencial uso en base a su caracterización…………….… VII ESTUDIO EXPERIMENTAL PARA LA DEFINICIÓN DE COMPONENTES…………… 1.Aislamiento térmico en contextos de precariedad…….……………………………... 1.1.Materiales de aislamiento térmico de origen natural……….…………………………. 1.2.Estudio de las aplicaciones constrictivas de aislamiento térmico en contextos de precariedad……………………………………………………….………………………... 1.3.Soluciones constructivas de aislamiento térmico mejoradas…….…………………… 1.4. Conclusiones parciales………………………………………………….………………… 2.Definición de la metodología experimental…………………………….…………….. 3.Diseño del procedimiento de manufactura apropiado al contexto……….………... 3.1. Definición de parámetros de estudio…………………………………………….……...

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Experimental study of thermal properties of a new ecological building material based on peanut shells and plaster

Cited by 39 publications

References 22 publications

Thermal Diffusion in Fibrous Aerogel Blankets

Thermal Diffusion in Fibrous Aerogel Blankets

A High-Resolution Open Source Platform for Building Envelope Thermal Performance Assessment Using a Wireless Sensor Network

El Jacinto de Agua como material de construcción en África Subsahariana

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