Ecological energetics of tropical intensive green roof

Jim, Chi Yung; Tsang, Sung

doi:10.1016/j.enbuild.2011.06.018

Cited by 39 publications

(16 citation statements)

References 19 publications

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“…In addition, roof gardens represent an overweight (290e970 kg/m 2 ) and additional maintenance in plant care [8]. These systems are focused on landscape and aesthetic values to increase living and recreation spaces in densely populated urban areas [7].…”

Section: Introductionmentioning

confidence: 99%

Thermal assessment of extensive green roofs as passive tool for energy savings in buildings

et al. 2016

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a b s t r a c tSustainability trends for buildings require new construction systems to foster energy efficiency and environmentally friendly buildings. Green roofs are interesting construction systems because they provide both aesthetic and environmental benefits. This paper continues a long-term research in order to evaluate and improve the thermal behaviour and sustainability of extensive green roofs. Simultaneously this research provides experimental data for specific Mediterranean continental climate conditions. The experiment consists in evaluating the energy consumption and thermal behaviour of three identical house-like cubicles located in Puigverd de Lleida (Spain), where the only difference is the roof construction system. The roof consists of a conventional flat roof with insulation in the reference case, while in the other two cubicles the insulation layer has been replaced by a 9 cm depth extensive green roof (comparing recycled rubber crumbs and pozzolana as drainage layer materials). The electrical energy consumption of a heat pump system was measured for each cubicle during 2012 and part of 2013. Both extensive green roof cubicles show less energy consumption (16.7% and 2.2%, respectively) than the reference one during warm periods, whereas both extensive green roof systems present a higher energy consumption (6.1% and 11.1%, respectively) compared to the reference cubicle during heating periods.

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Section: Introductionmentioning

confidence: 99%

Thermal assessment of extensive green roofs as passive tool for energy savings in buildings

et al. 2016

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“…Green roofs offer recreational areas to supplement the ground-level UGS stock. Moreover, they provide environmental and ecological benefits such as temperature cooling, air pollutant removal, noise reduction, storm water discharge reduction and water quality improvement, and wildlife habitats (Dunnett and Kingsbury 2004;Jim and Tsang 2011;Jim and Peng 2012).…”

Section: Ameliorate Pervasive Urban Soil Constraintsmentioning

confidence: 99%

Sustainable urban greening strategies for compact cities in developing and developed economies

Jim

2012

Urban Ecosyst

211

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Urban greening contributes notably to quality of life and ecosystem services in cities. Compact cities in developing and developed countries are commonly beset by greenspace deficit. Based on literature review supplemented by field studies in different cities, a sustainable urban greening strategy is proposed. Urban renewal and new developments without a greening vision could miss the opportunities to bring relief. The public and private sectors can join hands to insert plantable spaces into the urban fabric. Urban greenspaces (UGS) with good connectivity forming a green network to permeate the city constitute the hallmarks of a naturalistic design. Preservation and creation of natural areas with rich biodiversity offer a new dimension to UGS design. Greening benefits could be expressed in economic terms to complement conventional ecological-environmental emphasis. Outstanding trees could receive high-order conservation efforts, and trees in construction sites warrant enhanced protection. Tree transplanting demands an overhaul in concepts and skills. Improving roadside tree planting and maintenance offers a cost-effective way to upgrade the townscape. Ameliorating widespread soil limitations could remove a major hindrance to tree growth. Innovative ideas of development right transfer, street pedestrianization, river and canal revitalization, green roofs and green walls could mobilize hitherto underused plantable resources. Lacking appropriate institutional setup and scientific capability pose intractable bottlenecks. Innovative public policies and greening technologies are needed for sustained improvements. Amalgamating natural and social sciences in a multidisciplinary approach and reinforcing the link between science and public policies could overhaul greening.

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“…But perhaps due to the choice of methodology and selection of data, a concise yet statistically significant model has not been ascertained. Moreover, the relationship between soil moisture and green roof ET or thermal regime has been tackled by a few recent studies (Jim & Peng, 2012a, 2012bJim & Tsang, 2011a, 2011b. Its relationship with stormwater retention has yet to be thoroughly evaluated.…”

Section: Objectives and Approach Of This Studymentioning

confidence: 98%

“…The retained water returns to the atmosphere via evapotranspiration to ameliorate extremes in the urbanized hydrologic cycle. Additionally, it can reduce surface and air temperature via latent heat conversion in built-up areas (Jim & Peng, 2012a, 2012bJim & Tsang, 2011a, 2011b.…”

Section: Urban Stormwater Challenges and Quantitative Hydrologic Potementioning

confidence: 99%

Identifying keystone meteorological factors of green-roof stormwater retention to inform design and planning

Wong

Jim

2015

Landscape and Urban Planning

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Ecological energetics of tropical intensive green roof

Cited by 39 publications

References 19 publications

Thermal assessment of extensive green roofs as passive tool for energy savings in buildings

Thermal assessment of extensive green roofs as passive tool for energy savings in buildings

Sustainable urban greening strategies for compact cities in developing and developed economies

Identifying keystone meteorological factors of green-roof stormwater retention to inform design and planning

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