Articles
COOLING OF A SOUTH-FACING WALL USING A DOUBLE-SKIN GREEN FAÇADE IN A TEMPERATE CLIMATE©
Article number
1085_30
Pages
185 – 194
Language
English
Abstract
Green façades made of metal wire screens and mounted to the walls of buildings to support trellised vegetation is increasingly looked to as a means of urban greening and as a sustainable building technology.
Here we examine the thermal cooling performance of three candidate vine species (hops, Virginia creeper, and riverbank grape) on a 3-dimensional welded wire frame against a south-facing wall in a temperate climate.
We found that from May to September, the green façades kept the wall surface on average 1.84°C (3.31°F) cooler, with grape as the best performer reducing surface temperatures by 2.91°C (5.24°F) in September.
In all three species, wall cooling increased with vegetated cover, which increased over the growing season.
The effect of vegetated cover on wall cooling was most apparent in hops which re-grows from root stock and basal stems to cover much of the trellis by the end of the growing season, whereas grape and creeper foliage re-grows from stems that remain attached to the trellis, achieving more heterogeneous covering earlier in the growing season.
These findings contribute to a growing body of research on green façades and their functional performance as components of the building envelope and as architectural materials.
Here we examine the thermal cooling performance of three candidate vine species (hops, Virginia creeper, and riverbank grape) on a 3-dimensional welded wire frame against a south-facing wall in a temperate climate.
We found that from May to September, the green façades kept the wall surface on average 1.84°C (3.31°F) cooler, with grape as the best performer reducing surface temperatures by 2.91°C (5.24°F) in September.
In all three species, wall cooling increased with vegetated cover, which increased over the growing season.
The effect of vegetated cover on wall cooling was most apparent in hops which re-grows from root stock and basal stems to cover much of the trellis by the end of the growing season, whereas grape and creeper foliage re-grows from stems that remain attached to the trellis, achieving more heterogeneous covering earlier in the growing season.
These findings contribute to a growing body of research on green façades and their functional performance as components of the building envelope and as architectural materials.
Authors
J.S. MacIvor, L. Margolis
Keywords
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