Creating drafts in urban settings through coloured façades

Exploring a new climate adaptation measure based on thermal stratification

Journal article (2015)

Authors

L. Kleerekoper Climate Design and Sustainability - Architecture and the Built Environment
A.A.J.F. van den Dobbelsteen Architectural Engineering +Technology
E.R. van den Ham Building Physics - Architecture and the Built Environment
G.J. Hordijk Building Physics - Architecture and the Built Environment
C.L. Martin Climate Design and Sustainability - Architecture and the Built Environment
Department
Architectural Engineering +Technology
More Info
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Published Date

2015

Language

English

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Department

Architectural Engineering +Technology

Abstract

Climate change will lead to more warm and hot days in the Netherlands. Climate adaptation measures are needed to reduce the vulnerability of urban areas. Moreover, proven adaptation measures, such as increased vegetated areas or water surfaces, are not always possible due to a lack of space or undesired aesthetic effects. An alternative option is to make use of coloured façades to create drafts and accelerate wind speed in a street canyon or on a square to attract fresh air from cooler places. Differences in colour and material types already influence the air flow in street canyons in an uncontrolled manner. If this thermal comfort principle can be implemented, it will potentially have a significant impact on many cities throughout the world. This paper presents the results of a first exploratory research based on measurements on scale models and at full scale. This pilot study indicates success of the intended draft principle, advocating further research.