Biophysical properties and thermal performance of an intensive green roof

Jim, Chi Yung; Tsang, Sung

doi:10.1016/j.buildenv.2010.12.013

Cited by 134 publications

(52 citation statements)

References 22 publications

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“…During winter, green roofs can act as insulators, but this benefit is dynamic depending on climate zone and building characteristics. For example, contrary to most studies, intensive heat losses could be induced during winter sunny days in Hong Kong [43], which was largely due to climate variation and specific building construction. An outdoor thermal comfort study showed a moderate effect of green roofs on the surrounding microclimate, but a larger contribution when combined with vegetation at pedestrian level [44].…”

Section: Urban Heat Island Effect Mitigation Improving Thermal Comformentioning

confidence: 66%

“…Great potential exists for plant selection for green infrastructure amongst the enormous diversity but as for other applications we are also at risk of losing species before we find a use for them. The selection criteria for choosing a plant for urban greening are: biodiversity, climate suitability, drought and stress tolerance, aesthetics, leaf area coverage, potential for cooling, and pollutant removal efficiency [43,55,107,113]. Plant characteristics influencing selection include rooting depth, perenniality vs. annuality and evergreen vs. deciduous.…”

Section: Selection Of Plantsmentioning

confidence: 99%

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Characterisation of Nature-Based Solutions for the Built Environment

2017

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Nature has provided humankind with food, fuel, and shelter throughout evolutionary history. However, in contemporary cities, many natural landscapes have become degraded and replaced with impermeable hard surfaces (e.g., roads, paving, car parks and buildings). The reversal of this trend is dynamic, complex and still in its infancy. There are many facets of urban greening initiatives involving multiple benefits, sensitivities and limitations. The aim of this paper is to develop a characterisation method of nature based solutions for designing and retrofitting in the built environment, and to facilitate knowledge transfer between disciplines and for design optimisation. Based on a review of the literature across disciplines, key characteristics could be organised into four groups: policy and community initiatives, multiple benefits assessment, topology, and design options. Challenges and opportunities for developing a characterisation framework to improve the use of nature based solutions in the built environment are discussed.

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Section: Urban Heat Island Effect Mitigation Improving Thermal Comformentioning

confidence: 66%

Section: Selection Of Plantsmentioning

confidence: 99%

Characterisation of Nature-Based Solutions for the Built Environment

2017

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“…Nevertheless, most of the analyses found in the current literature focus on green roof systems in their entirety, both in the case of new buildings [15] and of building renovations [16]. Evaluations are primarily concerned with thermal energy performance and the related positive effects in different ways; in absolute terms, such as the study of single technological solutions installed on specific and experimental sites [15], or by comparing different solutions [2,3,17].…”

Section: Introductionmentioning

confidence: 99%

Measurement of Thermal Properties of Growing Media for Green Roofs: Assessment of a Laboratory Procedure and Experimental Results

et al. 2017

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While the Italian standard UNI 11235:2015 establishes minimum performance criteria, the thermal resistance of the growing medium of green roofs is not included in national regulations. Instead, thermal transmittance limits for roofs are obtained by referring to other stratigraphic layers. In the absence of specific national and international standards for laboratory calculations of the thermal performance of growing media for green roofs, a multi-year laboratory testing campaign was carried out on 8 samples which aimed to define the thermal resistance reference values of growing media as a function of density and water content. Thermal conductivity varies between 0.046-0.179 W/mK for dry samples as a function of density and between 0.046-0.47 W/mK as a function of moisture content. Defining a reference method, laboratory tests and restitution of the output in performance curves, was based on 108 tests carried out according to and deviating from the standard based on both guarded hot plate and heat flow meter methods. The significance of the results has prompted researchers and industrial partners to engage in further investment and ongoing tests in this area, targeting the definition of a standard laboratory method to be presented worldwide.

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“…Assim, auxiliam no inverno, reduzindo a perda de calor do edifício, como também no verão, diminuindo o ganho de calor para dentro da edificação. Portanto, este sistema auxilia a manter a temperatura interna estável durante todo o ano, reduzindo o consumo anual de energia 31 , além de melhorar o conforto térmico do ambiente 32 . A ventilação adequada também desempenha um papel importante na manutenção do conforto térmico de um ambiente 13 .…”

Section: Sustentabilidade No Espaço Escolarunclassified

Otimização Do Conforto Ambiental No Espaço Escolar: Uma Visão Sustentável

2015

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ARTIGO DE REVISÃO Páginas 01 de 05 não para fins de citação RESUMOPráticas sustentáveis no espaço escolar são ações importantes que visam à redução do consumo energéti-co e de recursos naturais, as quais podem melhorar as condições de conforto ambiental de salas de aula, auxiliando no rendimento escolar e diminuindo riscos à saúde dos escolares. Objetivo: revisar práticas arquitetônicas sustentáveis que possibilitem otimizar as condições de conforto visual, térmico e acústico no espaço escolar. Resultados: com base na literatura, constata-se que a utilização da iluminação natural é uma das ferramentas sustentáveis mais importantes para melhorar o conforto visual em salas de aula. Para melhorar o conforto térmico, estratégias básicas de ventilação natural são fundamentais. A utilização de materiais naturais ou reciclados é uma alternativa aos materiais tradicionais para melhorar o conforto acústico. Considerações finais: a utilização de estratégias adequadas na concepção do projeto arquitetônico ou reestruturação de espaços construídos, bem como recorrer a materiais alternativos, melhoram o conforto ambiental de salas de aula e reduzem o impacto ambiental.

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Biophysical properties and thermal performance of an intensive green roof

Cited by 134 publications

References 22 publications

Characterisation of Nature-Based Solutions for the Built Environment

Characterisation of Nature-Based Solutions for the Built Environment

Measurement of Thermal Properties of Growing Media for Green Roofs: Assessment of a Laboratory Procedure and Experimental Results

Otimização Do Conforto Ambiental No Espaço Escolar: Uma Visão Sustentável

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