Green roofs in European climates. Are effective solutions for the energy savings in air-conditioning?

Ascione, Fabrizio; Bianco, Nicola; Rossi, Filippo de; Turni, Gianluca; Vanoli, Giuseppe Peter

doi:10.1016/j.apenergy.2012.11.068

Cited by 255 publications

(106 citation statements)

References 37 publications

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“…This is why urban areas must be planned by implementing, where necessary, proper mitigation strategies. Some of these strategies, partially affecting each other, are: the use of high albedo surfaces [26][27][28][29][30], evaporation from porous surfaces [31,32], evaporation from ground-level water surfaces [33] and roof ponds [34], vegetated surfaces [35], rooftop gardens [36][37][38][39][40], and trees [27,41]. This paper, through the examination of a case study concerning the Cloister of San Pietro in Vincoli (placed right inside the Faculty of Engineering of the Sapienza University of Rome), evaluates how some of the mitigation strategies previously mentioned affect the microclimate and the outdoor thermal comfort.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Different Urban Microclimate Mitigation Strategies through a PMV Analysis

et al. 2015

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Abstract:Outdoor thermal comfort affects the health of the people and the quality of life in urban areas. This is the reason why in the past few years different mitigation strategies for the microclimate have been studied and examined. These strategies depend on those passive factors characterizing the urban setting that are able to affect the values of local meteorological variables, as the limit surfaces of the urban space (parterre and façades of the buildings). This paper examines the Cloister by Giuliano da Sangallo, which is part of the Faculty of Engineering of Sapienza University of Rome. The case study compares the present configuration of the Cloister with four other configurations characterized by some vegetation and materials with a high albedo by taking into consideration the PMV (Predicted Mean Vote) model. Microclimatic variables are calculated through numerical simulations performed by the ENVI-met software. Such a comparison is performed during a typical summer day. While examining the results it can be noticed how the strategy presenting the best results is the one with some vegetation, whereas the materials with a high albedo improve the microclimate if applied on surfaces characterized by a high sky view factor. OPEN ACCESSSustainability 2015, 7 9013

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Section: Introductionmentioning

confidence: 99%

Evaluation of Different Urban Microclimate Mitigation Strategies through a PMV Analysis

et al. 2015

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“…Ascione et al [27] analyse the economic feasibility of green roofs compared to a cool roof in six European cities from cold northern cities to hot southern mediterranean areas. They concluded that green roofs are not an economic energy efficient strategy in European climates, when considering the investment and maintenance costs.…”

Section: The Energy Impact Of Green Roofs On Hvac Systemsmentioning

confidence: 99%

“…A well-insulated one storey office building is modelled by Ascione et al [27] to investigate green roofs' potential on reducing the energy demand for air-conditioning systems in European climates. Based on the modelling results in cooling dominant climates for example in Spain and Italy, green roofs can reduce the annual primary energy demand (for cooling & heating) by maximum 8-11%.…”

Section: The Energy Impact Of Green Roofs On Hvac Systemsmentioning

confidence: 99%

The impact of greening systems on building energy performance: A literature review

Raji

Tenpierik

Dobbelsteen

2015

Renewable and Sustainable Energy Reviews

311

151

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“…The energy efficiency of this measure can be enhanced by improving the thermal insulation, shading and thermal mass used in the design [32]. Ascione et al [33] studied the impact of green roofs on heating and cooling energy saving and reported an expected energy saving of 8-11% in Italy and Spain. Zinzi and Agnoli [34] compared the effect of cool roofs and green roofs on the energy performance of residential buildings.…”

Section: Introductionmentioning

confidence: 99%

Impact of Climate Change: Environmental Assessment of Passive Solutions in a Single-Family Home in Southern Spain

et al. 2018

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According to the IPCC Climate Change projections by 2050 temperatures in southern Spain will have increased noticeably during the summer. Housing-in its current form-will not be able to provide a suitable response to this new climate scenario, and will in turn prompt an increase in cooling energy consumption and a series of problems relating to health and comfort. The Design Builder simulation tool was used to quantify the impact of this future climate scenario on energy demand, as well as its effect under free-running conditions on indoor temperature. Different passive conditioning strategies were evaluated to establish their influence on the indoor comfort conditions. The case study examined a theoretical single-family residential unit model in order to establish guidelines for the pre-selection of the most suitable passive solutions. The results show that passive conditioning strategies analysed (envelope treatment, solar gain protection and night-time natural ventilation) reduce energy demand and indoor temperatures, thus increasing energy efficiency and improving indoor comfort conditions. Therefore, these passive conditioning strategies reduce the cooling energy consumption.

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Green roofs in European climates. Are effective solutions for the energy savings in air-conditioning?

Cited by 255 publications

References 37 publications

Evaluation of Different Urban Microclimate Mitigation Strategies through a PMV Analysis

Evaluation of Different Urban Microclimate Mitigation Strategies through a PMV Analysis

The impact of greening systems on building energy performance: A literature review

Impact of Climate Change: Environmental Assessment of Passive Solutions in a Single-Family Home in Southern Spain

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