Thermal lag and decrement factor of a coconut-ferrocement roofing system

Alavéz-Ramírez, Rafael; Chiñas‐Castillo, Fernando; Morales-Domínguez, Valentín Juventino; Ortiz-Guzmán, Margarito; Lara‐Romero, Javier

doi:10.1016/j.conbuildmat.2014.01.048

Cited by 17 publications

(4 citation statements)

References 36 publications

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“…Madurwar et al reported in review the thermophysical properties of the products based on CF derived from agricultural waste [30] whilst Schiavoni et al added acoustic and mechanical properties of a conventional and unconventional insulated materials available on the market [31]. Ramirez et al studied the hygrothermal behaviour of ferrocement (reinforced concrete) sandwich panels wall, insulated with CF, determining hygrothermal parameters [32] and in a further work the thermodynamic parameters for the coconut ferrocement roofing system [33].…”

Section: Coconut Fibre Insulations and Other Utilizationsmentioning

confidence: 99%

Coconut fibre insulators: The hygrothermal behaviour in the case of green roofs

Fabbri

Tronchin

Barbieri

2021

Construction and Building Materials

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Section: Coconut Fibre Insulations and Other Utilizationsmentioning

confidence: 99%

Coconut fibre insulators: The hygrothermal behaviour in the case of green roofs

Fabbri

Tronchin

Barbieri

2021

Construction and Building Materials

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“…Madurwar et al reported in review the thermophysical properties of the products based on CF derived from agricultural waste [30] whilst Schiavoni et al added acoustical and mechanical properties of conventional and unconventional insulated materials available on the market [31]. Ramirez et al studied the hygrothermal behaviour of ferrocement sandwich panels wall, insulated with CF, determining hygrothermal parameters [32] and subsequently thermodynamic parameters for the coconut ferrocement roofing system [33]. Iwaro et al [34] related thermal performances of CF insulator with relative energy consumption, as well as Mintorogo et al [35] reported cooling consumptions due to the use of concrete slab with and without CF insulation.…”

Section: Coconut Fiber Insulations and Other Utilizationsmentioning

confidence: 99%

On the hygrothermal behavior of coconuts fiber insulators on green roofs

Fabbri

Tronchin

Barbieri

et al. 2020

2020 IEEE International Conference on Environment and Electrical Engineering and 2020 IEEE Industrial and Commercial Power Syst

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Coconut fibre insulators, represent an insulating material considered as "exotic", which clashes with the doubts of his thermo-hygrometric behavior, in particular, in the case of covering technology such as green roofs, a technological solution adopted in the case of sustainable buildings or nearly zero energy building. Green roofs represent a valid constructive solution with high thermal performances, adopted in existing and new buildings. The purpose of the research regards the study of the thermo-hygrometric behavior of the concrete and Cross-Laminated Timber (CLT) slabs, insulated with coconut fibre-boards (CF) such as alternative synthetic insulators, referred to 10 different green roofs scenarios. The results show that coconut fibre insulations are equally comparable to natural and synthetic materials, and their doubts for their applications, also in the green roofs, are related to technological solutions for the implementation in the market and their diffusion between the buildings materials.

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“…21 A thermal lag of three and half hours and a reduction in temperature fluctuations of 40% were observed when coconut fibre is incorporated in precast ferrocement roofing channel components. 22 Reflective paints, roof gardens, light-coloured outer surfaces, and window treatments are some preferred solutions to minimize the heat load of the building; Portland cement, coarse aggregate, fine aggregate, coconut fibres and water can be used as a composite concrete to appreciably improve the properties such as hardness, tensile strength and torsion. 10 Coir mat has many heat-mitigating characteristics and can be used as a building skin capable of blocking the heat during daytime and liberating heat during nighttime.…”

Section: Introductionmentioning

confidence: 99%

Experimental analysis on heat mitigation potential of stacked coir fiber mat and perlite as an alternative for green roof

Thomas

et al. 2022

Journal of Industrial Textiles

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Depleting non-renewable resources and global warming motivated researchers to focus on passive cooling solutions to minimize the internal temperature of buildings. The benefits of using stacked coir mat and perlite in wet and dry conditions are tested for their cooling capacity compared to green roofs are explored in this research work. The benefits are quantified in terms of heat flow and temperature variations in a field experiment, and they are compared to a conventional bare roof in a tropical region in the Indian subcontinent (8.9142oN, 76.632oE). The heat transfer to the inside of the roof for dry coir mat paved, stacked coir mat and perlite bed, stacked wet coir mat and wet perlite bed, and extensive green roof system with coir mat as retaining layer are reduced by 38.43%, 63.21%, 55.3% and 56.97% respectively. This study evaluated the evaporative cooling capacity of wet coir mat and wet perlite, which have given almost near cooling capacity of green roof for 24 h. Considering its low maintenance and low initial cost, the usage of the stacked coir fibre mat with perlite shows a compatible reduction in heat transfer through the roof slab as that of the green roof. The coir insulation with perlite will undoubtedly reduce the energy requirement for heating ventilation and air conditioning (HVAC) systems to a greater extent.

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Thermal lag and decrement factor of a coconut-ferrocement roofing system

Cited by 17 publications

References 36 publications

Coconut fibre insulators: The hygrothermal behaviour in the case of green roofs

Coconut fibre insulators: The hygrothermal behaviour in the case of green roofs

On the hygrothermal behavior of coconuts fiber insulators on green roofs

Experimental analysis on heat mitigation potential of stacked coir fiber mat and perlite as an alternative for green roof

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