| 摘要 |
A method and apparatus for efficiently applying a thin film of water on a solar energy impacted surface, especially a building. By measuring the rate of evaporation, and the level of absorption of fluid by the surface, the apparatus applies fluid at appropriate times to achieve nearly 100% evaporation, thereby maximizing its cooling effects. The apparatus controls multiple control valves, each valve supplying fluid to one or more spray nozzles, thereby minimizing the need for excessively large water supply pipes.
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