An automated ‘uchimizu’ (water-spraying) device that applies the wisdom of our ancestors to cool off our modern summers

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UCHIMIZU is a water-spraying device that hints at the Japanese custom of ‘uchimizu’ which has been in use since the Edo period.
Using solar electricity, the device siphons up reusable water such as rain water, detects ground temperature with sensors, and automatically sprays the water after determining when it’s most effective. By lowering the ambient temperature through evaporative cooling and making one feel cooler, it reduces the electricity used by air conditioners. This is why it’s garnered attention as a project helping to control global warming. We launched the Uchimizu Challenge as a proof-of-concept, for which our company’s Olympic/Paralympic promotion office featured prominently.

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