Thermal performance of a vegetated cladding system on facade walls

Thermal performance of a vegetated cladding system on facade walls

An experimental approach is used to assess the effect of vegetation on the thermal performance of a vertical greening system, which comprised of turf-based vertical planting modules, on an elevated facade wall of a public housing apartment. Despite temperature fluctuations in the various compartment...

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Bibliographic Details
Published in:Building and environment Vol. 45; no. 8; pp. 1779 - 1787
Main Authors: Cheng, C.Y., Cheung, Ken K.S., Chu, L.M.
Format: Journal Article
Language:English
Published: Kidlington Elsevier Ltd 01-08-2010
Elsevier
Subjects:
Applied sciences
Building insulation
Buildings
Buildings. Public works
Cladding
Exact sciences and technology
External envelopes
Facades
Fluctuation
Heat flux
Moisture
Planting
Power plants
Temperature reduction
Thermal comfort
Vegetation
Vertical green panel
Wall. Partition
Walls
Watering regime
Zoysia japonica
Ext C
ΔT
Sub
Wind
Thermal comfort
Hf B
Hf C
Ext B
Int B
Int C
Sunshine
Heat flux
P C
P B
Rad
Vertical green panel
Watering regime
Zoysia japonica
Amb
Cloud
Veg
Temperature reduction
Performance evaluation
Temperature
Cladding slab
Heat flow
Front wall
Experimental study
Drainage
Humidity effect
Spatial distribution
Decrease
Vegetation
Thermal analysis
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Summary:An experimental approach is used to assess the effect of vegetation on the thermal performance of a vertical greening system, which comprised of turf-based vertical planting modules, on an elevated facade wall of a public housing apartment. Despite temperature fluctuations in the various compartments external and internal to a concrete wall, the vegetated cladding reduced interior temperatures and delayed the transfer of solar heat, which consequently reduced power consumption in air-conditioning compared with a building envelope with bare concrete. Vegetation cover led to a different pattern of temperature fluctuations on wall surfaces, which may affect the comfort of occupants even after sunset. The cooling effect which was closely associated with the area covered by living plants and moisture in the growth medium, demonstrated the value of maintaining a healthy vegetation cover beyond visual amenity. Marked variation in moisture distribution along the vertical profile of the growth medium highlighted a concern rarely addressed in planting on ground. Substrate moisture measured at randomly selected locations would underestimate the water stress in some plants and impair their survival.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 23
ISSN:0360-1323
1873-684X
DOI:10.1016/j.buildenv.2010.02.005