Desert cooler

In late sixties Katya's father worked at a construction site in Iraq. And he told us about an incredible device that Iraqies invented to fight the heat. It was a large frame, size about 5 by 2 meters, about 30 cm thick, stuffed with dry seaweeds or grass. It was installed the way it could catch the wind, and then assigned people poured water on the device. The temperature in its shadow was a lot lower than the one in the sun. A similar device existed in Iran, basically it is the same concept of an evaporative cooler, but not portable: the windcatcher (Bâd gir).