Thibault Faverie has utilized evaporation as a method of cooling air. His ‘natural air conditioning’ device is made up of a ceramic vessel, an aluminum pipe and two liters of water. The water inside the vessel permeates the porous terra cotta and when it reaches the surface it evaporates into the air. When the H2O molecules transform from a liquid to a gas the result is a cooling phenomenon. This cooling affects the ceramic vessel, the water and the aluminum tube in the center, which releases the cool air into the surrounding environment.
A similar technique is applied in ceramic refrigerators, which are sometimes used in third world countries to keep food cool. Faverie’s ‘bio air conditioning’ uses the same principals, but instead of containing the coolness inside of the terra cotta clay vessel it emits the chilled air into the surrounding environment.