Energy simulation of vertical greenery systems

Wong, Nyuk Hien; Tan, Alex Yong Kwang; Tan, Puay Yok; Wong, Ngian Chung

doi:10.1016/j.enbuild.2009.08.010

Cited by 218 publications

(104 citation statements)

References 2 publications

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“…Analisando 9 tipos diferentes de sistemas de fachada verde, Wong et al (2009) concluíram que vários fatores influenciam no seu desempenho, tais como: a estrutura física do sistema, a dimensão e os tipos de materiais compostos nos painéis que suportam o substrato, as espécies de plantas escolhidas, o tipo do substrato, a composição e mistura do conteúdo dos vários modelos existentes no mercado. Lima Junior, Medeiros, Tavares | Fachadas vegetais para melhora do conforto ambiental de edificações A superfície de uma edificação coberta por um sistema de Fachada Vegetal pode estar protegida contra as principais intempéries como a radiação direta em grande intensidade, a chuva, o vento, a geada e em países de clima frio e temperado também oferece proteção contra a neve.…”

Section: Fachadas Vegetaisunclassified

Fachadas vegetais para melhora do conforto ambiental de edificações: escolha para Curitiba usando análise hierárquica

Junior¹,

Medeiros

Tavares

2017

arquiteturarevis

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Este é um artigo de acesso aberto, licenciado por Creative Commons Atribuição 4.0 Internacional (CC BY 4.0), sendo permitidas reprodução, adaptação e distribuição desde que o autor e a fonte originais sejam creditados. RESUMO -As fachadas de qualquer edificação localizada na cidade de Curitiba necessitam de tratamentos adequados as frequentes variações climáticas, caracterizadas pelas rápidas amplitudes térmicas ao longo dos dias, e temperatura intensas de frio e calor nas estações bem definidas de inverno e verão. Os sistemas de fachadas vegetais estão se tornando opções para melhorar o desempenho térmico de edificações bem como a sensação de conforto dos usuários. Este artigo tem como objetivo escolher dentre 4 sistemas, o sistema de fachada vegetal mais apropriado à cidade de Curitiba, de acordo com oito critérios estabelecidos. O método utilizado é o Processo de Análise Hierárquica (PAH), criada por Thomas Saaty, que consiste fundamentalmente em tomadas de decisões de multi-critérios. Os resultados indicaram que o sistema de fachada vegetal com manta é a melhor solução com 30,17% de toda pontuação, embora sendo a opção de custo mais elevado e a que mais necessita manutenção.Palavras-chave: Fachada Vegetal, Análise Hierárquica, Curitiba.ABSTRACT -The facades of any building located in the city of Curitiba require frequent treatments suitable climatic variations, characterized by rapid thermal amplitudes over the days, intense cold and heat temperatures well defined seasons in winter and summer. The greenery facade systems are becoming techniques to improve the thermal performance of buildings and the users comfort sensation. This article aims to choose from 4 systems, the green façade system appropriate to the city of Curitiba, in accordance with eight established criteria. The method is the Analytic Hierarchy Process (AHP), created by Thomas Saaty, which basically consists of making multi-criteria decisions. The results indicated that the greenary façade system with blanket is best solution with 30.17% of all score, although the option is more expensive and requires more maintenance.

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Section: Fachadas Vegetaisunclassified

Fachadas vegetais para melhora do conforto ambiental de edificações: escolha para Curitiba usando análise hierárquica

Junior¹,

Medeiros

Tavares

2017

arquiteturarevis

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“…The leaf area index has effect on shading, because it has a linear relationship with shading coefficient, which means a higher coverage of greenery resulting in a better shading effect and a greater thermal insulation [25]. In addition, the solar absorption amount and emissivity of leaves and the transpiration of plants increase heat losses [11].…”

Section: Energy Performance Of Vertical Greenerymentioning

confidence: 99%

“…Wong et al founded a maximum reduction of 11.6℃ by a vertical greening wall in Hortpark (Singapore) [2]. Wong et al stated that vertical greenery systems reduced a maximum temperature of 11.5℃ at building facades in tropical climates [25].…”

Section: International Forum On Energy Environment Science and Matermentioning

confidence: 99%

“…Direct solar radiation and green shading are among the most important factors affecting the thermal performance of building envelopes [6,11]. Vertical greenery systems lower energy demand and cool building interiors or exterior through blocking incoming solar radiation and minimizing the amount of energy into the concrete facade [3,25]. The National Research Council of Canada found that the shading effect reduce the energy cooling load and usage of fans by 20% and 23%, resulting in an 8% reduction in annual energy consumption [18], Mazzali et al found that the VGS reduced the energy cooling load significantly [11], decreased the immediate outdoor temperature by 5.5-8 ℃ and a corresponding energy by 50-70% [26].…”

Section: Energy Performance Of Vertical Greenerymentioning

confidence: 99%

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Study Advances on Vertical Greenery System

Hou¹,

Xue

2015

Proceedings of the 2015 International Forum on Energy, Environment Science and Materials

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Abstract. For high-density urban environments, vertical greenery is often employed as one of feasible alternatives of environmental improvement. Vertical greenery systems (VGS) are being served as an interesting measure to improve the quality of life and urban environments, but only a few studies have examined overall performance of VGS. Vertical greenery has potential benefits, including reducing the surface temperature of buildings facades and diurnal temperature fluctuation, alleviating Urban Heat Island and noise pollution, reducing g heat flux to the building and energy cost, transforming the urban landscape and enhancing visual effect and so on. This paper provides a literature review for VGS studying, including VGS classification and their effects on acoustic insulation, thermal, air flow and temperature, energy performance, CO 2 sequestration and microclimatic layer.

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“…According to Building Control Regulations published in 1979, all air conditioned buildings are required to be designed with an OTTV of not more than 45 W/m 2 [43]. Wong et al [44] simulated the effect of vertical greening systems on the OTTV of a 20-storey hypothetical building that is fully covered by glass. They found that building's OTTV reduced significantly (40%) when the plants coverage ratio was 50%, and the solar transmittance value was only 4%.…”

Section: Shading Effectmentioning

confidence: 99%