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The Impact of Small-Scale Greening on the Local Microclimate—A Case Study at Two School Buildings in Vienna

Author

Listed:
  • Florian Teichmann

    (Institute of Material Technology, Building Physics and Building Ecology, TU Wien, 1040 Vienna, Austria)

  • Andras Horvath

    (Rheologic GmbH, 1060 Vienna, Austria)

  • Markus Luisser

    (Rheologic GmbH, 1060 Vienna, Austria)

  • Azra Korjenic

    (Institute of Material Technology, Building Physics and Building Ecology, TU Wien, 1040 Vienna, Austria)

Abstract

Strategies to mitigate urban heat islands are a recent issue in the Austrian capital, Vienna. In this study, the uhiSolver-v2106-0.21 software was used to evaluate the summer cooling effects and humidity production of small-scale facade greening and a green pergola located in two schools within the city. Based on on-site measurement data, the study revealed that small-scale greening measures are not able to substantially reduce ambient air temperature. On a hot summer day, at 3 p.m. local time (CEST), the maximum decrease amounted to 0.3 °C at 0.1 m from the facade greening as well as inside the green pergola. As for the apparent (perceived) temperature, a reduction of up to 4 °C was observed under the green pergola compared to the unshaded roof terrace. Hence, the simulation results show that, within urban areas, a significant improvement of thermal comfort in summer can only be achieved through large-scale greenery that provides shade for pedestrians.

Suggested Citation

  • Florian Teichmann & Andras Horvath & Markus Luisser & Azra Korjenic, 2022. "The Impact of Small-Scale Greening on the Local Microclimate—A Case Study at Two School Buildings in Vienna," Sustainability, MDPI, vol. 14(20), pages 1-30, October.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:20:p:13089-:d:940533
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