From observations to modeling : investigating the heat mitigation potential of public spray mist cooling in Zurich

Suter, Ivo; Drossaart van Dusseldorp, Saskia; Anet, Julien

doi:10.5194/egusphere-egu23-13652

Publication type:	Conference other
Type of review:	Peer review (abstract)
Title:	From observations to modeling : investigating the heat mitigation potential of public spray mist cooling in Zurich
Authors:	Suter, Ivo Drossaart van Dusseldorp, Saskia Anet, Julien
et. al:	No
DOI:	10.5194/egusphere-egu23-13652
Conference details:	European Geosciences Union (EGU) General Assembly, Vienna, Austria, 24–28 April 2023
Issue Date:	25-Apr-2023
Other identifiers:	EGU23-13652
Language:	English
Subject (DDC):	363: Environmental and security problems
Abstract:	Residents of urban areas are disproportionately affected by heat stress due to the combination of global warming and increasing urbanisation[1]. This not only affects the quality of life, but also poses a significant health risk and has been shown to lead to increased mortality rates[2]. However, due to the complex nature of urban climate, the impact of such interventions can vary depending on the local conditions and are thus hard to predict. In this study a real-world implementation of a spray mist cooling system in the city of Zurich is investigated. A ring carrying 180 high pressure nozzles was installed on a public square, as shown in figure 1a. Studies on spray mist cooling are scarce and inconclusive, as it depends on various operational, environmental and experimental factors[3]. State-of-the-art measuring stations[4] have been deployed for continuous measurements of temperature, humidity and other parameters during summer 2022, as shown in figure 1b. The measurements showed a weak cooling effect that was most pronounced south of the cloud, as shown in figure 2. A mean effect of -0.7°C was measured, with the strongest cooling of up to -2.5°C. The impact of the cloud was most pronounced at 25°C. A dependency on relative humidity and wind direction was measured, with the largest effect measured at low relative humidity downwind of the misting system. Outside of the operational hours no temperature difference was observed. The field experiment supports model development as an ideal case for model validation. The effect of the misting systems on heat and moisture fluxes have been implemented into the urban LES model PALM[1]. The parameterised cooling system in PALM was then used to investigate variations in placement, weather conditions and amount of sprayed water.
URI:	https://digitalcollection.zhaw.ch/handle/11475/30322
Fulltext version:	Published version
License (according to publishing contract):	Licence according to publishing contract
Departement:	School of Engineering
Organisational Unit:	Centre for Aviation (ZAV)
Appears in collections:	Publikationen School of Engineering

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Suter, I., Drossaart van Dusseldorp, S., & Anet, J. (2023, April 25). From observations to modeling : investigating the heat mitigation potential of public spray mist cooling in Zurich. European Geosciences Union (EGU) General Assembly, Vienna, Austria, 24–28 April 2023. https://doi.org/10.5194/egusphere-egu23-13652

Suter, I., Drossaart van Dusseldorp, S. and Anet, J. (2023) ‘From observations to modeling : investigating the heat mitigation potential of public spray mist cooling in Zurich’, in European Geosciences Union (EGU) General Assembly, Vienna, Austria, 24–28 April 2023. Available at: https://doi.org/10.5194/egusphere-egu23-13652.

I. Suter, S. Drossaart van Dusseldorp, and J. Anet, “From observations to modeling : investigating the heat mitigation potential of public spray mist cooling in Zurich,” in European Geosciences Union (EGU) General Assembly, Vienna, Austria, 24–28 April 2023, Apr. 2023. doi: 10.5194/egusphere-egu23-13652.

SUTER, Ivo, Saskia DROSSAART VAN DUSSELDORP und Julien ANET, 2023. From observations to modeling : investigating the heat mitigation potential of public spray mist cooling in Zurich. In: European Geosciences Union (EGU) General Assembly, Vienna, Austria, 24–28 April 2023. Conference presentation. 25 April 2023

Suter, Ivo, Saskia Drossaart van Dusseldorp, and Julien Anet. 2023. “From Observations to Modeling : Investigating the Heat Mitigation Potential of Public Spray Mist Cooling in Zurich.” Conference presentation. In European Geosciences Union (EGU) General Assembly, Vienna, Austria, 24–28 April 2023. https://doi.org/10.5194/egusphere-egu23-13652.

Suter, Ivo, et al. “From Observations to Modeling : Investigating the Heat Mitigation Potential of Public Spray Mist Cooling in Zurich.” European Geosciences Union (EGU) General Assembly, Vienna, Austria, 24–28 April 2023, 2023, https://doi.org/10.5194/egusphere-egu23-13652.