Passive downdraught cooling. Architectural integration in Seville.

Passive Downdraught Cooling is a technique which will potentially become a substitute for conventional air-conditioning in Southern Europe and the hot dry regions of the world. As well as providing substantial energy savings, the technique avoids the need for ductwork, fans and suspended ceilings, and reduces the need for refrigerant based cooling. However, this approach has architectural implications which extends the vocabulary of 'passive design'.