[Terrapreta] [Fwd: Re: Part II comments on John Cowan's

[Bruno M.]

Gentlemen you'r guessing, not calculating I'm afraid.   ;-)

If you have 180 degrees Celsius ( wet steam, so without super heater)
you gonna have around 10 bar pressure.
( For people living in the middle ages thats around 145 PSI )

I knew this from former experience, but is you like to do some quick search
or calculations about the temp & pressure of steam, you can find a lot of
on-line free help, tables and calculators, maybe put these links in your
'bookmarks' or 'favorites' ?

An example for saturated steam tables :
www.efunda.com/materials/water/steamtable_sat.cfm

An on-line Calculator to:
             Convert just about anything to anything else.
         ( Over 5,000 units, and 50,000 conversions. )
www.onlineconversion.com/

grts
Bruno M.
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At 20:28 20/04/2007, Juergen Botz wrote:
>John Cowan wrote:
> > I've calculated this to be 130 PSI. I have yet to find such equipment.
> > Back to make something from scratch?
>
>Sean Barry has suggested 22.3 PSI.  That seems low to me, 130 seems
>high.  "Seems" is simply based on the knowledge that ordinary
>pressure cookers work at about 15 PSI.
>
>I found the following on a web page about pressure cookers...
>
>   "At sea level the temperature of steam is 212°F. for each
>   pound of pressure increased, the temperature increases by 3°F."
>
>That would give about 48 PSI for 180 degrees Celcius.
>
>Sterilization autoclaves are definitely not designed for this
>kind of pressure.  So yes, it looks like making something from
>scratch.  I'm up for working on a design!
>
>:j
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