Case Study: Thermal Comfort in a Water Mist on Hot Summer Days

In a case study on outdoor mist cooling, 141 people attending an open campus event were surveyed over 2 hot summer days. Nozzles mounted on an oscillating fan sprayed about 18L/h of mist with average droplet diameter of 25μm. Subjects stood in the misting area where they wished. Time spent in the misting area was recorded. Skin temperature of the forearm and face were taken with IR surface thermometers before entering and after leaving the misted area.

Study of cooling system with water mist sprayers ―fundamental examination of particle size distribution and cooling effects

A cooling system spraying micro water droplets could prove useful in mitigating temperature increases in urban areas by using heat from water evaporation, a process that consumes only small amounts of water and energy. If water mist is sprayed in a semi-outdoor area, for example under a canopy, it could potentially improve conditions on hot days. However, there is little reference data concerning the design or control of such systems.