Green façades to control wall surface temperature in buildings

Vox, Giuliano; Blanco, Ileana; Schettini, Evelia

doi:10.1016/j.buildenv.2017.12.002

Cited by 151 publications

(64 citation statements)

References 39 publications

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“…As shown in Table 1 and Figure 1, the average values of temperatures recorded on the control wall were mainly higher than the values recorded on the mobile LWS. This green technology showed its cooling effect during the daytime that is in accordance with the conclusions presented by VOX et al [15]. Pérez et al [8] reported the reduction of the external building surface temperature in the range from 1.7 ºC to 13 ºC in warm temperate climate regions.…”

Section: Resultssupporting

confidence: 87%

Examination of thermal balance of vertical green mobile wall

Mašán

Burg

Bukovská

et al. 2019

Engineering for Rural Development

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The trend of urbanism in the cities is to reduce the amount of green areas. These green areas cannot compete with the financial force of developers, and therefore they are built in a vertical shape instead of the horizontal one and as a living wall system (LWS). In this form, they are able to reduce the urban heat island (UHI) and have positive effects on building improved thermal environment as well as other benefits. Unfortunately, there are still areas, such as historic centres of towns, squares and parking slots, where no areas are suitable for the living wall system. On the other hand, specifically these areas are suitable for the mobile version of green walls. This study examines the influence on lowering the temperature of the mobile version of LWS developed at the Mendel University in Brno. The evaluation is based on comparing the surface temperature of buildings, the surface temperature of LWS while dry and the surface temperature of LWS after irrigating. The effect was observed in the thermographic pictures of the mobile version of LWS by comparison to the reference wall. The study aims at evaluating the real possibilities of the LWS system on lowering the temperature of surfaces in the urban area as well as the possibilities of the system on lowering the problem with UHI. The results confirmed the expected lower temperature of the surface approximately about 13,2 % at LWS while dry and 28 % after irrigation in comparison to the regular surface without LWS cover. Similarly, the effect of balanced extreme temperatures during the day was examined, as the irrigation water was able to remove the high temperature of the LWS surface and significantly contributed to the cooling effect. Moreover, there was no radical stress level of plants recorded on the vertical green mobile system. Otherwise, that would negatively affect the positive functions of such solution.

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Section: Resultssupporting

confidence: 87%

Examination of thermal balance of vertical green mobile wall

Mašán

Burg

Bukovská

et al. 2019

Engineering for Rural Development

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“…In general, because of the ecological and energy efficiency reasons, the local material from the tropical traditional building has been adopted for common living space of the tropical modern building in an urban area. However, the adaption building material to the variation of the environment and its orientation has not been found in the previous studies [1,[14][15][16][17]. Therefore, by this research, the results are expected to reinvigorate local material in adapting to the changed environment for today's building.…”

Section: Resultsmentioning

confidence: 65%

An integrated control on thermal and noise environment of tropical building material

2018

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The environmental problems of thermal and noise environment are recently considered the most important contributors to the tropical building in an urban area. The porous tropical materials provide both a solution for cooling and airborne noise problem from the source to receiver when the wind is in the same direction. This research optimizes the integrated control of thermal and noise environment which are directed into building material evaluation. Surabaya is selected as representative of the hotter area of the lowland while Malang is determined as the colder urban area of the highland. An eco-tropical lightweight material, wood, is examined as a case study. The field measurement for surface material temperature and its transmission loss were conducted in order to give information on thermal and acoustical properties of the material. The optimization is conducted by comparing Sound Reduction Index and by Conduction Heat Flow. The results highlighted that for the same material, the thickness that effect on its mass is important for both thermal and noise control. The higher the thickness is, the higher the Sound Reduction Index and the lower the conduction heat flow are. Modifying material by adding the thickness of wood results that by material mass minimum 36.5 kg/m2, the critical lowland building meets the standard of World Health Organization noise limits and has lower heat gain.

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“…The thermal effects of the façades during the day were caused by solar radiation, wind speed and relative humidity. The greatest impact of such parameters on the cooling occurred at wind speed of 3-4 m × s -1 , relative humidity in the range 30-60%, and solar radiation higher than 800 Wm 2 (Vox et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

Experimental Tests of Thermal Properties Pertaining to Vertical Plant Systems in the Climate of Lower Silesia

Szawernoga¹,

Pęczkowski²

2018

ASP.FC

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Current fast development of cities causes obsolescence of green areas, which is partly the reason for the rise in temperature within cities, and for the creation of the "urban heat island" effect. In order to limit the heating of the agglomeration, alternative ways of introducing greenery to urban areas should be explored. One of these is the use of green walls on the façades of buildings. The vertical garden affects the air temperature, reducing the temperature on the surface of the heated building; furthermore, green walls improve the aesthetic values of the city, introducing peace into the harsh landscape of modern architecture, and they clean the air of toxins. In the present work, we discuss the problems pertaining to green wall thermals. Tests were run on experimental models during 2016 in Lower Silesia Province at the Agro-Hydrometeorology Observatory Wrocław-Swojec of Wrocław University of Environmental and Life Sciences. The main objective of those tests was to check impact of green walls on the environment and on the temperatures inside green wall. Observations were run on the south elevation on building. Performed tests indicated that plant cover works as isolation on wall. Due to these properties, it is possible to stabilize conditions on the wall behind the green panel. All the measurements were run simultaneously on the green wall, and on the reference model-a wall without plant cover. Comparing both models indicated that the green wall limits heating of the outer part of building, which can hold down variation of temperature inside the building.

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Green façades to control wall surface temperature in buildings

Cited by 151 publications

References 39 publications

Examination of thermal balance of vertical green mobile wall

Examination of thermal balance of vertical green mobile wall

An integrated control on thermal and noise environment of tropical building material

Experimental Tests of Thermal Properties Pertaining to Vertical Plant Systems in the Climate of Lower Silesia

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