Windcatchers can also be used in combination with qantas to provide more cooling capacity. A qanat or kariz is a gently sloping underground channel to transpor

Windcatchers can also be used in combination with qantas to provide more cooling capacity. A qanat or kariz is a gently sloping underground channel to transport water from an aquifer or water well to surface for irrigation and drinking, acting as an underground aqueduct. Qanats used in conjunction with a wind tower can provide cooling as well as a water supply. https://en.m.wikipedia.org/wiki/Qanat#Cooling https://en.m.wikipedia.org/wiki/Qanat#Cooling