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Who invented refrigerator? How refrigeration helps in food preservation?

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Who invented refrigerator? How refrigeration helps in food preservation?
posted Mar 24, 2016 by Kavyashree

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William Cullen at the University of Glasgow demonstrated the first artificial refrigeration system in the year 1748.

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In the year 1805, US inventor Oliver Evans, designed the first refrigeration machine that didn't use liquid and instead used vapor to cool.

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answer May 25, 2016 by Atindra Kumar Nath
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