Recent studies on vertical greenery systems(VGS)mainly focus on thermal perfor-mance,acoustics effects,energy savings and environmental sustainability.There are very few studies on tropical VGS irrigation systems,pla...Recent studies on vertical greenery systems(VGS)mainly focus on thermal perfor-mance,acoustics effects,energy savings and environmental sustainability.There are very few studies on tropical VGS irrigation systems,plants’characteristics,and favor-able installation locations,indicating that architectural professionals may lack suffi-cient guidance to support their design work.Through two descriptive case studies and a questionnaire survey of VGS-related professionals including gardeners,mechanical and electrical engineers,consultants,contractors,and developers,this research devel-oped a knowledgebase for tropical vertical greenery systems irrigation systems and determined the suitability of different types of vertical greenery systems according to the biophysical characteristics of plants.The suitability for various plant character-istics has been identified to help potential users while considering vertical greenery systems irrigation systems.Suitable locations,orientations and microclimatic condi-tions for vertical greenery systems irrigation systems to prevent system failure have been determined.Further research focused on establishing the technical requirements for irrigation scheduling is recommended to improve the application efficiency.展开更多
Research has shown the environmental benefits of green envelopes,as well as performance in terms of energy efficiency.To date,there is no analysis of the economic sustainability of these systems,which has allowed the ...Research has shown the environmental benefits of green envelopes,as well as performance in terms of energy efficiency.To date,there is no analysis of the economic sustainability of these systems,which has allowed the realization of a few,albeit very well known,examples.The research has identified a green modular system integrated into the building envelope,designed to facilitate installation and maintenance,with competitive performance compared to other existing solutions;a system that wants to improve performance and flexibility of vertical applications,experimented on buildings,on the market,and able to adapt,above all,to the needs of the building process.It is important to distinguish architectural aesthetic requirements from those of the building process;the former aim to have an authentic vertical garden,with different kinds of plants where nature dictates the rules,the latter aims to achieve the economic sustainability of vertical greenery systems.This paper provides an analysis of a technique based on the installation of plant bearing modular panels with turf on substructures also provided with a micro-irrigation system,which allows the construction of a modular coating,characterized by reduced thickness,that can also be integrated with other materials;installation is quick and simple,since the panel comes perfectly planted on site.In addition to that it allows,from a botanical point of view,resorting to types of grass selected with a view to climate,exposure,environmental adaptability,color and shape.A comparative analysis of this green façade is also presented compared to other existing case studies,from a constructive and managerial point of view,highlighting both its economic and architectural advantages.展开更多
There are many factors that have a major influence on reducing the energy expenditure in building sector.This research aims at qualitative and quantitative assessment of those factors such as double glazed windows,ver...There are many factors that have a major influence on reducing the energy expenditure in building sector.This research aims at qualitative and quantitative assessment of those factors such as double glazed windows,ver-tical greenery systems(VGS),integrating of semi-transparent photovoltaic device with architectural design of buildings,energy saving by using heat reflecting coating,passive climate control methods,energy saving by shading,building energy performance enhancement by using optimisation technique,double skin green facade,etc.through a holistic and thematic approach.Amongst the aforesaid techniques,VGS is found the most reliable,efficient and sustainable solution.Attractive VGS can improve the urban environment,increase biodiversity,mit-igate pollution also results economic benefit of the buildings as like as energy savings and decreasing surface temperature.Four fundamental energy saving methods are used in VGS which are considered as passive energy saving mechanism.Firstly,interception of solar radiation due to the shadow risen by the vegetation;secondly,vegetation also provides thermal insulation;thirdly,plants evapotranspiration helps for evaporative cooling of building;finally,building blockage makes a variation of wind effect on building.The peak cooling load of ivy coated green building wall has been reduced by 28%.If a VGS is installed without windows and building fac-ing on west,east,south and north correspondingly,the reduction in the cooling load capacity of the building is observed to be up to 20,18,8 and 5%,respectively.Very high thermally resistive glazed areas on building envelope can be secured via thin film PV glazing and vacuum glazing products with an average U-value of 1.1 and 0.4 W/m 2 K,respectively.Energy use policies are also helpful to improve energy consumption scenario of buildings.For developing more energy-efficient,sustainable and eco-friendly buildings,these techniques might be helpful for the building designers and architects.展开更多
The rapid urban development has caused serious problems such as high energy consumption and carbon emissions,especially under the context of climate change.Buildings are particularly energy-intensive,generating about ...The rapid urban development has caused serious problems such as high energy consumption and carbon emissions,especially under the context of climate change.Buildings are particularly energy-intensive,generating about one third of global energyrelated carbon emissions.Compared with active solutions(like mechanical systems),passive solutions offer the potential to balance energy consumption,thermal comfort,and ecological benefits.One potential solution is the integration of green glass space(GGS)into passive building design.GGS is a transitional building space with glass curtain walls that exhibit excellent insulation performance during winter.However,GGS is susceptible to overheating during summer,which limits its applicability.Therefore,this work proposes a strategy of integrating vertical greenery into GGS,leveraging the nature-based solution of greenery(i.e.,flourishes in summer and withers in winter)to address this seasonal challenge of GGS.The results demonstrated that the strategic application of vertical greenery can effectively mitigate the overheating in GGS and improve comprehensive benefits.By using full coverage of vertical greenery in a linear layout,the air temperature of GGS and cooling energy consumption were largely reduced by 8.02℃and 12.2%,respectively,while the carbon abatement was enhanced by up to 101.11 tons.Based on a comprehensive evaluation of energy,economy,and environmental benefits,it is recommended to use a greenery configuration with 50%coverage in a vertical linear layout for GGS.The integration of greenery into building design can mitigate adverse environmental impacts,reduce energy consumption,and contribute to the sustainable development of low-carbon cities.展开更多
Nature has its own astonishing capability to naturally cleanse the environment.Living green drapes on buildings look elegant and can provide sustainable solu-tions in congested cities.The Vellore Institute of Technolo...Nature has its own astonishing capability to naturally cleanse the environment.Living green drapes on buildings look elegant and can provide sustainable solu-tions in congested cities.The Vellore Institute of Technology in India promotes green values within the country.Although the campus is lush and verdant,its ever growing student population precipitated an increase in public thoroughfare causing air pollution.To partially alleviate this problem,walls of a subway connecting the main academic campus and the hostel premises are draped with Vernonia elaegni-folia creeper;this is aesthetically elegant and was found to be efficient in capturing much of the vehicular pollution within the subway.An experimental investigation clubbed with an Ecotect analysis helped ascertain the optimal duration of the tem-perature drop across the subway.The analysis also predicts an annual savings of 36000 USD per hostel block.A detailed Scanning Electron Microscopic analyses coupled with Spectrophotometry established the deposition pattern of sulphates and nitrates.It is expected that the results of this analysis will promote the use of green facades in this sun drenched country.展开更多
文摘Recent studies on vertical greenery systems(VGS)mainly focus on thermal perfor-mance,acoustics effects,energy savings and environmental sustainability.There are very few studies on tropical VGS irrigation systems,plants’characteristics,and favor-able installation locations,indicating that architectural professionals may lack suffi-cient guidance to support their design work.Through two descriptive case studies and a questionnaire survey of VGS-related professionals including gardeners,mechanical and electrical engineers,consultants,contractors,and developers,this research devel-oped a knowledgebase for tropical vertical greenery systems irrigation systems and determined the suitability of different types of vertical greenery systems according to the biophysical characteristics of plants.The suitability for various plant character-istics has been identified to help potential users while considering vertical greenery systems irrigation systems.Suitable locations,orientations and microclimatic condi-tions for vertical greenery systems irrigation systems to prevent system failure have been determined.Further research focused on establishing the technical requirements for irrigation scheduling is recommended to improve the application efficiency.
文摘Research has shown the environmental benefits of green envelopes,as well as performance in terms of energy efficiency.To date,there is no analysis of the economic sustainability of these systems,which has allowed the realization of a few,albeit very well known,examples.The research has identified a green modular system integrated into the building envelope,designed to facilitate installation and maintenance,with competitive performance compared to other existing solutions;a system that wants to improve performance and flexibility of vertical applications,experimented on buildings,on the market,and able to adapt,above all,to the needs of the building process.It is important to distinguish architectural aesthetic requirements from those of the building process;the former aim to have an authentic vertical garden,with different kinds of plants where nature dictates the rules,the latter aims to achieve the economic sustainability of vertical greenery systems.This paper provides an analysis of a technique based on the installation of plant bearing modular panels with turf on substructures also provided with a micro-irrigation system,which allows the construction of a modular coating,characterized by reduced thickness,that can also be integrated with other materials;installation is quick and simple,since the panel comes perfectly planted on site.In addition to that it allows,from a botanical point of view,resorting to types of grass selected with a view to climate,exposure,environmental adaptability,color and shape.A comparative analysis of this green façade is also presented compared to other existing case studies,from a constructive and managerial point of view,highlighting both its economic and architectural advantages.
基金Authors would like to acknowledge the financial support from Uni-versity of Malaya,Impact orientated Interdisciplinary Research Grant(Project:IIRG015B-2019)to carry out this research.
文摘There are many factors that have a major influence on reducing the energy expenditure in building sector.This research aims at qualitative and quantitative assessment of those factors such as double glazed windows,ver-tical greenery systems(VGS),integrating of semi-transparent photovoltaic device with architectural design of buildings,energy saving by using heat reflecting coating,passive climate control methods,energy saving by shading,building energy performance enhancement by using optimisation technique,double skin green facade,etc.through a holistic and thematic approach.Amongst the aforesaid techniques,VGS is found the most reliable,efficient and sustainable solution.Attractive VGS can improve the urban environment,increase biodiversity,mit-igate pollution also results economic benefit of the buildings as like as energy savings and decreasing surface temperature.Four fundamental energy saving methods are used in VGS which are considered as passive energy saving mechanism.Firstly,interception of solar radiation due to the shadow risen by the vegetation;secondly,vegetation also provides thermal insulation;thirdly,plants evapotranspiration helps for evaporative cooling of building;finally,building blockage makes a variation of wind effect on building.The peak cooling load of ivy coated green building wall has been reduced by 28%.If a VGS is installed without windows and building fac-ing on west,east,south and north correspondingly,the reduction in the cooling load capacity of the building is observed to be up to 20,18,8 and 5%,respectively.Very high thermally resistive glazed areas on building envelope can be secured via thin film PV glazing and vacuum glazing products with an average U-value of 1.1 and 0.4 W/m 2 K,respectively.Energy use policies are also helpful to improve energy consumption scenario of buildings.For developing more energy-efficient,sustainable and eco-friendly buildings,these techniques might be helpful for the building designers and architects.
基金supported by the National Natural Science Funds for Distinguished Young Scholar(Grant No.52225005)。
文摘The rapid urban development has caused serious problems such as high energy consumption and carbon emissions,especially under the context of climate change.Buildings are particularly energy-intensive,generating about one third of global energyrelated carbon emissions.Compared with active solutions(like mechanical systems),passive solutions offer the potential to balance energy consumption,thermal comfort,and ecological benefits.One potential solution is the integration of green glass space(GGS)into passive building design.GGS is a transitional building space with glass curtain walls that exhibit excellent insulation performance during winter.However,GGS is susceptible to overheating during summer,which limits its applicability.Therefore,this work proposes a strategy of integrating vertical greenery into GGS,leveraging the nature-based solution of greenery(i.e.,flourishes in summer and withers in winter)to address this seasonal challenge of GGS.The results demonstrated that the strategic application of vertical greenery can effectively mitigate the overheating in GGS and improve comprehensive benefits.By using full coverage of vertical greenery in a linear layout,the air temperature of GGS and cooling energy consumption were largely reduced by 8.02℃and 12.2%,respectively,while the carbon abatement was enhanced by up to 101.11 tons.Based on a comprehensive evaluation of energy,economy,and environmental benefits,it is recommended to use a greenery configuration with 50%coverage in a vertical linear layout for GGS.The integration of greenery into building design can mitigate adverse environmental impacts,reduce energy consumption,and contribute to the sustainable development of low-carbon cities.
文摘Nature has its own astonishing capability to naturally cleanse the environment.Living green drapes on buildings look elegant and can provide sustainable solu-tions in congested cities.The Vellore Institute of Technology in India promotes green values within the country.Although the campus is lush and verdant,its ever growing student population precipitated an increase in public thoroughfare causing air pollution.To partially alleviate this problem,walls of a subway connecting the main academic campus and the hostel premises are draped with Vernonia elaegni-folia creeper;this is aesthetically elegant and was found to be efficient in capturing much of the vehicular pollution within the subway.An experimental investigation clubbed with an Ecotect analysis helped ascertain the optimal duration of the tem-perature drop across the subway.The analysis also predicts an annual savings of 36000 USD per hostel block.A detailed Scanning Electron Microscopic analyses coupled with Spectrophotometry established the deposition pattern of sulphates and nitrates.It is expected that the results of this analysis will promote the use of green facades in this sun drenched country.
