Climate actions
Lowering the temperature through the use of water vaporizers is a practice that can increase the degree of resilience with respect to heat islands. Cooling by water spray (fountains) can decrease the air temperature by evaporation, absorption of heat and conduction of heat. The cooling effect of flowing water is greater than that of standing water, due to a better mix of flowing water and air and with the conduction of heat. Water spray from a fountain has an even greater cooling effect because of the large contact surface of water and air, which favours evaporation. When in contact with skin, water spray can also have a cooling effect due to evaporation. This measure could determine an increase in water consumption, which could be unsustainable during droughts and heat waves.
Water spray to cope with heat waves in cities
Objective
Become resilient to heat island.
Description
Expected results
Built environment options and technological options.
Result indicators
Decreased air temperature [°C]
Involved actors
Stakeholders related to the choices to implement the new infrastructure in the cities.
Expected timeline for action
Best practices
Criticalities
Scope of the action
Type of proposed actions
Sector of action
Climate impacts
Implementation scale