Eco-solutions for urban environments regeneration: The economic value of green roofs

Teotónio, Inês; Silva, Cristina Matos; Cruz, Carlos Oliveira

doi:10.1016/j.jclepro.2018.07.084

Cited by 88 publications

(38 citation statements)

References 22 publications

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“…Consequently, it is possible to assert that a green roof can enhance the thermal inertia of a roof, thus increasing the internal comfort, reducing energy needs [13][14][15][16][17][18][19]. In addition, if installed in high-density urban areas, a green roof can offer positive contribution against the UHI phenomenon, also absorbing polluting gases.…”

Section: Introductionmentioning

confidence: 99%

Experimental Evaluation and Numerical Simulation of the Thermal Performance of a Green Roof

et al. 2020

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In the building sector, both passive and active systems are essential for achieving a high-energy performance. Considering passive solutions, green roofs represent a sustainable answer, allowing buildings to reach energy savings, and also reducing the collateral effect of the Urban Heat Island (UHI) phenomenon. In this study, a roof-lawn system was investigated by means of an extended measurement campaign, monitoring the heat transfer across the roof. Heat-flow meters and air- and surface-temperature probes were applied in a real building, in order to compare the performance of the roof-lawn system with a conventional roof. This experimental approach was followed to quantify the different thermal behaviors of the building components. Moreover, an equivalent thermal model of the roof-lawn system was studied, in order to obtain the equivalent thermal properties of the roof, useful for setting building models for yearly energy simulations. The roof-lawn system revealed its advantages, showing a higher thermal inertia with no overheating in summertime and a lower thermal transmittance with energy savings in wintertime, and, consequently, better indoor conditions for the occupants of the building.

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Section: Introductionmentioning

confidence: 99%

Experimental Evaluation and Numerical Simulation of the Thermal Performance of a Green Roof

et al. 2020

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“…The multifunctional nature of green roofs has extensively been referred to in the literature. In fact, when authors elaborate on the advantages of this technology, they mention the multiple benefits that it brings, or the number of problems of different kinds and scales that it can simultaneously tackle [3,6,8,9]. Although several technical green roof documents refer to a specific performance related to different scales [4][5][6][7][8]17,18,32], those contents are not structured or systematized in a way that facilitates a panoramic understanding of the overall cross-scale performance.…”

Section: Multi-scale Approachmentioning

confidence: 99%

Function-Based and Multi-Scale Approach to Green Roof Guidelines for Urban Sustainability Transitions: The Case of Bogota

Gutierrez

Rámos-Mejía

2019

Buildings

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A growing number of local green roof niches across the globe are transitioning into the mainstream domain. Guidelines are key to this process, as they define technological environments and set the criteria for best practices in a given socio-technical setting. Although the German Forschungsgesellschaft Landschaftsentwicklung Landschaftsbau (FLL) cornerstone guidelines provided solid empirical ground and established technical parameters for the successful application of green roofs across continents, investigations about alternative green roof guidelines for emerging markets remain very scarce. The paper presents the inclusive approach followed by the Bogota Green Roof Guidelines, which were the result of a multi-actor participatory process that examined how to embrace a wide range of emerging green roof technologies and local adaptations while promoting quality of application at different scales, regardless of the system used, and despite the absence of local robust empirical data on performance parameters. As a result, Bogota’s Green Roof Guidelines incorporated ad hoc elements: (1) new definitions and taxonomy, (2) function-based contents, (3) multi-scale approach, and (4) performance scoping. These aspects are discussed to provide novel insights for the advancement of green infrastructure policies in diverse institutional settings aiming to promote quality and simultaneously support markets that make room for a wide variety of green infrastructure practices.

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“…Costs and benefits will be organized in categories, depending on the type of infrastructure under study. Previous studies Teotónio et al, 2018) show that benefits can be organized at building and city level, when discussing residential buildings or public spaces, but should be organized according to users, infrastructure and surrounding environment if analyzing transport infrastructures, like stations or roads. Task 2.2 will use data from task 1.3 to model most significant costs and benefits over time through the definition of adequate models to evaluate the impacts of each type of green roof/wall technology.…”

Section: Task 2 -'Development Of Innovative Cost-benefit Modelling Comentioning

confidence: 99%

Project GENESIS: An All-inclusive Model to Perform Cost-Benefit Analysis of Green Roofs and Walls

Silva¹,

Cruz²,

Teotónio³

2019

EJSD

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Green roofs and walls are one of the most promising alternatives for retrofitting existing built environments and tackle urban challenges in a multifunctional way. Yet, these solutions are being confined to specific countries or cities, as their economic contribution has not been fully examined nor accepted. GENESIS is a trans-disciplinary project funded by FCT - Fundação para a Ciência e a Tecnologia that will develop a systematic and comprehensive model to support potential investors or decision-makers, balancing the costs with the benefits of green roofs and walls in a life cycle perspective. The main objective of the project is to enhance existing cost-benefit analysis of green roofs and walls through a multidisciplinary approach that will allow the replication in different regions and type of infrastructures. This will be achieved by: i) monetizing and including all economic, social and environmental benefits in the analysis in order to weight different types of benefits (even those that are typically difficult to estimate because they have no market value) and establish a comparative basis of alternative solutions and potential scenarios; ii) comprising an uncertainty model to cope with climate change and inaccurate forecasting of benefits/costs modelling and; iii) including multi-criteria mode in order to incorporate users and investors preferences. This all-inclusive model crucial for a wide spreading in is green roofs and walls and a more sustainable development in cities. Keywords: green roofs/walls; cost-benefit analysis; investors/users preferences; sustainable urban development; uncertainty

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Eco-solutions for urban environments regeneration: The economic value of green roofs

Cited by 88 publications

References 22 publications

Experimental Evaluation and Numerical Simulation of the Thermal Performance of a Green Roof

Experimental Evaluation and Numerical Simulation of the Thermal Performance of a Green Roof

Function-Based and Multi-Scale Approach to Green Roof Guidelines for Urban Sustainability Transitions: The Case of Bogota

Project GENESIS: An All-inclusive Model to Perform Cost-Benefit Analysis of Green Roofs and Walls

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