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Papagiannopoulos, George; Ford, Brian. Evaporative cooling using porous ceramic bricks: experimental results from Greece. In: CONFERENCE ON PASSIVE AND LOW ENERGY ARCHITECTURE, 20., 2003, Santiago do Chile. Anais... Santiago do Chile, 2003.
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Abstract

Interest in passive downdraught evaporative cooling is growing and there are now a number of buildings worldwide which have adopted this technique. However, the use of high pressure water misting devices has a number of disadvantages (blocking of nozzles, micro-biological contamination etc). This paper reports on the development of a simple cooling system, based on evaporation from porous ceramic surfaces. Test results, from measurements made during July 2002 in an experimental tower in southern Greece, are presented. Standard building bricks were used as the porous material within the tower, supplied with water from a simple drip irrigation system. The overall performance of the system, if designed and regulated appropriately, can provide very stable and comfortable internal conditions. The potential application of this approach to existing as well as new buildings was investigated in a preliminary study. This project ran in parallel to an EC Fifth Framework research project into the performance of porous ceramic evaporators for cooling. The wider application to non-domestic buildings in southern Europe has been investigated as part of an EC funded Altener project. The simplicity and low cost of this technique and the propitious results suggest that the system could prove to be a substitute for conventional air-conditioning in hot and dry climates.
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