Journal
BUILDING AND ENVIRONMENT
Volume 64, Issue -, Pages 57-66Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.buildenv.2013.03.005
Keywords
Living Walls; Field measurements; Green cladding; Sustainability
Funding
- Tuscan Region (Italy), within the program PAR FAS Regione Toscana [1.1.a.3]
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Living Walls, a type of vertical greenery system, are relatively light structures for architectural green cladding. They embed a thick curtain of plants nurtured by an automated watering system. Three Living Wall field tests are presented for investigating potential effects of the energy behavior on building envelopes. In particular, Living Walls were monitored in a Mediterranean temperate climate context at the latitudes of Northern and Central Italy. As a result, the dependence on the solar radiation forcing came out clearly. During sunny days, difference in temperature (monitored on the external surface) between the bare wall and the covered wall ranges from a minimum of 12 degrees C (case C) to a maximum of 20 degrees C (case A). The analysis was extended also to heat flux. The incoming (positive) heat flux through the bare wall was found to be higher compared to the Living Wall. Considering an overall thermal balance during the monitoring period, the outgoing heat flux through the Living Wall was higher. These results indicate that the use of green architectural cladding can significantly contribute to cooling energy reduction and offer a valuable solution for retrofitting existing buildings. (c) 2013 Elsevier Ltd. All rights reserved.
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