The maximum temperature of saturated steam temperature depends on pressure; unsaturated steam does not. At work, we just finished a project using steam at over 800F to drive a jet mill.

Brent

<http://en.wikipedia.org/wiki/Superheated_steam>


On 7/21/2014 5:39 PM, Attila Kinali wrote:
On Mon, 21 Jul 2014 18:00:59 -0400
Chuck Harris <cfhar...@erols.com> wrote:

Steam superheats only if the pressure is raised above standard pressure,
otherwise, steam at standard pressure will be exactly 212F, or 100C.

Uhm.. you are the second one claiming this. Could you please explain
what physics limits the temperature of vapor?

The ideal gas equation says that p*V/T = const, ie that the temperature
can rise at a constant pressure, as long as the gas is allowed to expand.

                                Attila Kinali

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