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DAN, P. D.; AYNSLEY, R. Cooling of water over an extended surface. In: CONFERENCE ON PASSIVE AND LOW ENERGY ARCHITECTURE, 16., 1999, Brisbane. Anais... Brisbane: PLEA, 1999. p. 441-446.
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Abstract

The effect and characteristics of nocturnal cooling of water has been investigated at James Cook University in Townsville, Australia. Water was trickled over the cover glass of a solar collector exposed to the night sky. The collector, 1.6 m2 in area, was on a roof inclined at 19° (same as the latitude). Results from these experiments indicated the body of the water was cool enough and the mass of the cooled water was sufficient to contribute to building cooling during the day in summer. The temperature of the water reached diurnal minimum air temperature or lower on a typical summer night. When the required surface comprises of a number of collectors arranged in parallel and series, it could spread over the whole roof of the building. With this arrangement, a further drop in water temperature is expected, enhancing the cooling effect.
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