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The water bottle chiller is a product that offers cold water to cyclist at the end of a half hour journey.
Once the chiller is recharged, the cyclist can fill water which cools down by a temperature of 8-10 C in 20 mins.
It works on the technology called peltier device. When potential difference is supplied to a pd, one side gets colder and the other hotter. The cooler side is in touch with the water botte and the hotter side with a heat sink which removes the heat constantly with the help of airflow caused by riding.
National Institute of Design