Energy savings in buildings or UHI mitigation? Comparison between green roofs and cool roofs

Costanzo, Vincenzo; Evola, Gianpiero; Marletta, Luigi

doi:10.1016/j.enbuild.2015.04.053

Cited by 158 publications

(65 citation statements)

References 28 publications

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“…Apart the urban-scale effects on the UHI phenomena, the adoption of green roofs among the construction components should also provide benefits at the buildingscale, particularly referring to the possible energy savings that they induce [12]. With this aim in mind, technicians must have at their own disposal useful calculation methods able to easily establishing the relationship between the building technology choices and the effects, not only on the UHI intensity, but also on the energy demand (and, possibly, the indoor comfort performances) of the analysed buildings.…”

Section: Proposal Of a Simple Methods Of Evaluationmentioning

confidence: 99%

A simple methodology for comparing cost-benefit of traditional, green and cool roofs

et al. 2019

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Energy policy makers, architects and researchers, when designing new buildings or rehabilitating the existing ones, are engaged in the attempt of limiting the energy needs for climatization (NZEB buildings) and the environmental pressure exerted by buildings (EU Climate Action). The pursuit of this demanding assignment calls for innovative solutions in conceiving the building envelope and its energy systems. Recently, among the most effective tools for improving the energy and environmental performances of buildings, the technical interventions regarding the roofs are gaining a rising attention. Indeed, covers of buildings are responsible of a relevant part of their energy losses and, on the other hand, could contribute to increasing the UHI effect. In the paper, a simple methodology that compares the energy and environmental benefits of cool and green coverages with traditional ones is presented. The capability of limiting the UHI effect of these solutions is also analysed. The methodology is applied to four cities of the Sicilian Island, characterized by different building density and different microclimates. This in-field application shows the feasibility of the method to be used in different urban contexts, as a useful contribution to the design of new buildings or to the re-design of the existing ones.

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Section: Proposal Of a Simple Methods Of Evaluationmentioning

confidence: 99%

A simple methodology for comparing cost-benefit of traditional, green and cool roofs

et al. 2019

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“…Meanwhile, the development and lab analysis about different kinds of prototyping materials have been performed by means of Differential Scanning Calorimetry (DSC) testing and other methods [28]. The energy performance of the green roofs and cool roofs has been discussed by the methods of simulation from the perspective of the UHI mitigation and energy needs of the building respectively [29]. Jo et al have simulated the energy consumption in a building using cooling roof covered by the cool materials and the cooling roof showed observably energy-saving effect [30].…”

Section: Introduction and Research Backgroundmentioning

confidence: 99%

Experimental research on a novel energy efficiency roof coupled with PCM and cool materials

Chen

Liu

et al. 2016

Energy and Buildings

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“…The current state of the art of the researches concerning urban heat islands and urban canyon effect is relied to different strategies design methodology of the buildings and cities [11,14,15], new analytical models [16] new materials technics [17], and greenery of the buildings [18], and streets [19]. The problem is complex and requires holistic research of numerous subelements in correlation, starting from the wind velocity and dimensions in the canyon to mitigation of diverse adverse effects [20].…”

Section: Introductionmentioning

confidence: 99%

Theory and smart practice in the reduction of negative effects of urban heat island

Stevovic¹,

Lj.²,

Djuric³

2018

THERM SCI

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Urban environment could be considered as a complex biotechnical system. Multidisciplinary, interdisciplinary, and intradisciplinary analyses are required in order to achieve sustainable urban communities and healthier cities, especially in the era of climate changes. The main goal of this paper is to investigate, select, and review the theories and smart practices in negative effects of urban areas heat problems reduction and to define the objective function of the issue. The objective function could be treated as the force, with magnitude and direction of influence that operates in a certain space, which is considered to control certain factors and parameters, including time as a dimension. Spatial and temporal gradient of canyon effect are defined with nodes canyon effects interaction. The thermal islands are analyzed by its volume, sources of heat, thermal gradient, with the goal to select strategies to reduce the negative effects of heat islands. Positive smart practice in the world is discussed. The purpose of this study is to find, by literature review and by holistic methodological approach application, better practice and adequate solutions for building, energy, water, and carbon balance in urban environment. The results are expected in the movement towards the blue and green cities.

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Energy savings in buildings or UHI mitigation? Comparison between green roofs and cool roofs

Cited by 158 publications

References 28 publications

A simple methodology for comparing cost-benefit of traditional, green and cool roofs

A simple methodology for comparing cost-benefit of traditional, green and cool roofs

Experimental research on a novel energy efficiency roof coupled with PCM and cool materials

Theory and smart practice in the reduction of negative effects of urban heat island

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