Cooling potential of water-based misting systems
Table of contents
Brief description
Heat stress in cities requires increasingly high efforts to cool buildings. Rooms hardly cool down at all on tropical nights, workplaces can only be used to a limited extent and cool oases are also rare in urban open spaces. Health and economic consequences are expected to increase. Block structures as typical urban living and working environments are particularly affected. The existing courtyards hardly contribute to natural cooling due to low vegetation volumes, heat accumulation and limited nocturnal radiation.
To improve the cooling potential, the use of water-based atomization systems (ZS) in courtyards is being investigated. These can be expected to reduce cooling requirements by providing pre-cooled air during the day and accelerating cooling at night. In addition, synergetic cooling oases can be created in open spaces, especially if cooling by trees (e.g. in underground car parks) is not possible. Furthermore, a reduction in the water consumption of heat-stressed vegetation can be expected.
As the operation of ZS would consume additional drinking water, the treatment and storage of rainwater is being designed. It should be possible to control the use of water for evaporation in summer and for groundwater recharge in cooler months. In this way, an approximation to the natural water balance is achieved, which is often massively disturbed in cities.
In the project, ZS are tested under laboratory conditions and in existing buildings and their effectiveness is recorded and evaluated using objectively measurable and subjectively perceived target values. Courtyards represent relatively closed microclimatic units with defined conditions. The use of urban digital twins enables highly scaled climate simulations; they are used both to provide data and to present and evaluate results. By linking the results, planning guidelines are developed for the integration of ZS for cooling optimization in new and existing buildings.
Media
Image-Film des Projekts © M. Schwöbel
© M. Jacob
© K. Uiboupin
© K. Uiboupin
© K. Uiboupin
© K. Uiboupin
© M. Schwöbel
© M. Schwöbel
Project data
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Core information |
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Period |
10/10/2024 - 31/01/2027 |
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Type of funding |
Third-party funding |
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Funding body |
Federal Institute for Research on Building, Urban Affairs and Spatial Development at the Federal Office for Building and Regional Planning |
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TUD Research Priority Areas |
Energy, Mobility and Environment ' Water Research |
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Sustainable Development Goals (SDGs) |
SDG 6 - Clean water and sanitation SDG 11 - Sustainable cities and communities SDG 13 - Climate action |
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Keywords |
Urban climate, atomization systems, cooling, courtyards, rainwater harvesting, digital twin |
Project management
© Andrè Terpe
Professor
NameMr Prof. Dr.-Ing. Jürgen Stamm
Head of Inst., Chair Hyd. Eng. & School of Civ. & Environ. Eng.
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Office of the Chair of Hydraulic Engineering
Visiting address:
Beyer-Bau, Room 04-22 George-Bähr-Str. 1
01069 Dresden
Office hours:
Appointments only by prior arrangement (phone or email)
Project management
Research Associate
NameMr Dr.-Ing. Ulf Helbig
Head of Hubert Engels Laboratory
Send encrypted email via the SecureMail portal (for TUD external users only).
Office of the Chair of Hydraulic Engineering
Visiting address:
Beyer-Bau, Room 04-023 George-Bähr-Str. 1
01069 Dresden
https://orcid.org/0000-0002-8659-9100
Office hours:
Please arrange a specific appointment in advance by e-mail.
Research Associate
NameMr Dipl.-Ing. Marc Anton Schwöbel
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Chair of Hydraulic Engineering Secretariat
Visiting address:
Beyer-Bau, Raum 136 George-Bähr-Str. 1
01069 Dresden
Project partners
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Partner:in |
Type |
Website |
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Institute of Landscape Architecture, Chair of Landscape Engineering (LABAU) at TU Dresden |
Internal |
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Institute of Hydrology and Meteorology, Chair of Meteorology (METEO) at TU Dresden |
Internal |
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Institute of Urban and Industrial Water Management, Chair of Urban Water Management (SWW) at TU Dresden |
Internal |
Publications
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Further information
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Funding
Federal Institute for Research on Building, Urban Affairs and Spatial Development at the Federal Office for Building and Regional Planning
