Vertical green walls for noise and temperature reduction – an experimental investigation

Tang, Van Tai, Rene, Eldon R., Hu, Lei, Behera, Shishir Kumar, Nguyen, Tan Phong, and Da, Chau Thi (2021) Vertical green walls for noise and temperature reduction – an experimental investigation. Science and Technology for the Built Environment, 27 (6). pp. 806-818.

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Abstract

The abundance of heat-trapping asphalt and concrete, smog, and heat emitted from buildings and vehicles is one of the major reasons for the prevailing high temperature, air and noise pollution in cities. Incorporation of green wall in buildings is considered to be an effective method to reduce temperature and mitigate environmental pollution. This study investigated and compared the performance of two types of climbing green wall (CGW) and paving green wall (PGW) vegetation for temperature and noise reduction. Besides, the biological characteristics of Parthenocissus tricuspidata and Sedum lineare Thunb were also analyzed to substantiate the temperature and noise reduction performance of these plants. The results revealed that, the average temperature reduction by CGW and PGW were 4.9% ± 1.3% and 16.6% ± 7.4%, respectively, under no irrigation condition, and 18.4% ± 9.4% and 23.8% ± 8.7%, respectively, under irrigation condition. The noise reduction by CGW in high (75–80 dB), medium (50–55 dB) and low (30–35 dB) sound pressure level was 12.4, 7.5 and 5.7 dB, respectively, and 15.6, 9.3 and 7.0 dB, respectively, by PGW. The results demonstrated that green wall has an excellent effect on buildings toward temperature and noise pollution reduction.

Item ID: 68586
Item Type: Article (Research - C1)
ISSN: 2374-474X
Copyright Information: Copyright © 2021 ASHRAE.
Funders: Southeast University, China, Ton Duc Thang University, Vietnam, James Cook University (JCU)
Date Deposited: 14 Jul 2021 01:17
FoR Codes: 33 BUILT ENVIRONMENT AND DESIGN > 3304 Urban and regional planning > 330411 Urban design @ 100%
SEO Codes: 18 ENVIRONMENTAL MANAGEMENT > 1899 Other environmental management > 189999 Other environmental management not elsewhere classified @ 100%
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