Liquid water at 400oC?


How do you get water to 400 oC?

Brocken Inaglory [CC BY-SA 3.0 ( or GFDL (], via Wikimedia Commons

Easy, you superheat it…

Superheated water is found naturally on the earth in underground water supplies – we see it coming to the surface as a geyser. It is also found in man made phenomena such as power stations.

But how is it superheated?

The key ingredient is Pressure. The pressure stops the water boiling and keeps it liquid – if the pressure is reduced (such as the geyser rushing out of the earths crust) it will boil and cool down.

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