The engineers of Arizona State University (ASU), a public metropolitan research university based in USA, have developed a cooling vest to keep wearer cool in hot climates.
The vest design combines the concept of an evaporative vest on the bottom and a foil vest on top to restrict the radiation and has a gap in between for air permeability to allow evaporation.
One of the designers of the product is Konrad Rykaczewski, an assistant professor at the School for the Engineering of Matter, Transport and Energy at ASU.
He is working on other designs and materials to be worn under the hot temperature. “You can think of having this hydrated swollen polymer with water against your skin. At the surface of the vest you have evaporation. You have some heat that goes into it from the body,” said Konrad.
The product has application for a walk, doing yard work or playing with the kids. The vest needs a few more years of testing before the product is rolled out for the commercial use.
The vest needs to be cooler than the outside summer heat.
Konrad further explains that in sunny conditions, wearing a vest does not leave any space for air movement and the wearer evaporates fair amount of water but he/she gets heated as well. Therefore, one needs to get a good amount of space for breeze to feel any cooling effect.