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Du Shi's water drainage device

(chinadaily.com.cn) Updated: 2014-11-12

Du Shi's water drainage device
[Photo from 01ny.cn]
Over 1,900 years ago, a waterpower air-blower was invented by Nanyang's prefect, Du Shi, in the Eastern Han Dynasty (AD 25–220).

In AD 31, Nanyang's prefect, Du Shi, invented an air-blower to solve the problem of manpower in smelting iron. Driven by steam trundling a wheel, the blower sends air into an iron-making furnace. It needs less manpower but brings great efficiency. The machine, invented 1,100 years before the European ones, is the first waterpower air-blower in the world.

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