Terracotta (ceramic) cooler

Evaporative cooling of water from the surface of the ceramic material known as terracotta (terracotta). Water absorption terracotta keeps the material constantly moist. This property is used to cool the rooms.

Evaporative cooler

Wind, water, evaporizér! Do you know the pleasant coolness in the summer wet t-shirt and a wind? The water from the t-shirts evaporates and you just have felt the effect of an evaporative cooler. Device