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With another heatwave expected to arrive soon, heat stress is once again high on the agenda. Rising temperatures and longer periods of warm weather are increasingly affecting comfort in buildings, public spaces, and other living environments. Not only during extreme heat events, but also during prolonged periods of warm weather, high temperatures can reduce livability, contribute to health issues, and create less comfortable environments.
Within the international Peutz Group, we have been studying the factors that contribute to heat stress for many years and investigating how these effects can be quantified and visualized. We combine advanced simulations with building physics experiments to assess the influence of sunlight, wind, evaporation, vegetation, water, and material use on perceived temperature.
It is the interaction between these factors that determines how people experience heat. That is why we analyse the microclimate as an integrated whole, providing insight not only into the causes of heat stress, but also into opportunities to mitigate its effects.
A well-known example is the role of trees and vegetation. Although planting can locally influence airflow, shade and evaporation often result in a significant reduction in perceived temperature. Measurements of green façades also show that they heat up less and emit less heat to their surroundings.
The aim of our analyses is not only to improve understanding, but also to provide practical guidance. Based on simulation results, we advise on measures at both the urban and building scale. These may include decisions regarding green infrastructure, water features, material selection, façade design, natural ventilation, and green roofs or façades.
To explain the topic in an accessible way, our specialists have recorded a short video demonstrating how simulations and measurements provide insight into heat stress and how these insights can be used to support informed design decisions.
