The cooling potential of water-based atomizing­systems tested in the MTZ courtyard

The heat wave is over, yet many urban areas are still sweltering. In densely built-up areas with sealed inner courtyards, heat is often stored for days. Concrete, asphalt, and glass surfaces absorb solar energy and release it slowly. Without greenery, air circulation, or shade, the heat builds up, which has noticeable consequences for the microclimate and health. Elderly people, young children, and individuals with pre-existing medical conditions are particularly susceptible to heat stress.

How can we disrupt this effect? The research project "Cooling Potential of Water-Based Atomization Systems" by the Institute of Landscape Architecture is investigating how water atomized to varying degrees can reduce the ambient temperature in cities.

Innovative atomizer systems that spray a fine mist of water on hot days are being tested in two courtyards: one on the university medical campus at the MTZ and one on the main campus at the CHE building. Along with meteorological measurements and vegetation studies near the test sites, an online survey about individual perceptions of temperature and humidity is being conducted.