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Author Topic: How Much Pressure In My Pressure Cooker ?  (Read 2604 times)

Offline neilep

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How Much Pressure In My Pressure Cooker ?
« on: 23/02/2010 18:55:16 »
Dearest Pressure-ologists,

As a sheepy I of course send my cooking pots and pans off to TV program quiz shows so that they can win lots of prizes !

I do it, ewe do it..we all do it !

Look, here's my pressure cooker just a few minutes ago preparing to answer the BIG £1,000,000 question !




My Pressure Cooker Just A Few Minutes Ago !



Gosh, I should be expecting the call any minute because he has ' phone-a-friend ' left..and the question is " In the music industry, since the early eighties, music has been available on a medium called Compact D ?....what is the "D " that comes after the word "Compact....D" ?....Yes, the phone is ringing...I know the the answer is Dishwasher !!..yes yes yes  !!!!...result !!!


Anyway...until I give the right answer can ewe tell me exactly how much pressure is built up in my pressure cooker ?..it's like..well lots yes ?


Oh yes..I'm booking my cruise !! *le smug*

Hugs & shmishes


mwah mwah mwah !!





Neil I Have The Latest Lady Ga Ga Compact-Dishwasher !
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx










D'OH !!!



 

Offline RD

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How Much Pressure In My Pressure Cooker ?
« Reply #1 on: 23/02/2010 19:09:19 »
Mine has a valve on the top with "15psi" engraved on it.
« Last Edit: 23/02/2010 19:19:46 by RD »
 

Offline Geezer

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How Much Pressure In My Pressure Cooker ?
« Reply #2 on: 23/02/2010 19:27:12 »
Mine has a valve on the top with "15psi" engraved on it.

Yup. Just a bit more than atmospheric pressure at sea level. But the small pressure increase does raise the steam temperature quite a bit, which is things cook a lot faster. Also, if you happen to live at high altitude, it really does save a lot of time.
 

Offline neilep

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How Much Pressure In My Pressure Cooker ?
« Reply #3 on: 23/02/2010 19:32:01 »
Mine has a valve on the top with "15psi" engraved on it.

Thanks RD.


Mine does not have an actual pressure level indicator..it has a setting for veggies and another for meaty stuff....

thanks for psi link
 

Offline neilep

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How Much Pressure In My Pressure Cooker ?
« Reply #4 on: 23/02/2010 19:35:15 »
Mine has a valve on the top with "15psi" engraved on it.

Yup. Just a bit more than atmospheric pressure at sea level. But the small pressure increase does raise the steam temperature quite a bit, which is things cook a lot faster. Also, if you happen to live at high altitude, it really does save a lot of time.

Thanks Mr Geezer..I'm surprised,,I thought it was lots and lots more !...so..it's the addition of the increase in temperature in concert with additional pressure that really does all the hard work eh

Any idea what kind of temperature increase is achievable ?
 

Offline RD

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How Much Pressure In My Pressure Cooker ?
« Reply #5 on: 23/02/2010 19:55:10 »
According to this chart at 15 psig water boils at 121oC, rather than 100oC (at sea level atmospheric pressure).

http://en.wikipedia.org/wiki/File:Vapor_Pressure_of_Water.png    [oK is degrees Kelvin, oK = oC + 273 ].
« Last Edit: 23/02/2010 20:11:54 by RD »
 

Offline Geezer

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How Much Pressure In My Pressure Cooker ?
« Reply #6 on: 23/02/2010 20:12:17 »
]

so..it's the addition of the increase in temperature in concert with additional pressure that really does all the hard work eh




I think it's just the increase in temperature that speeds up the cooking. I doubt if the pressure increase has any effect. The only way to increase the temperature of the water is to increase the pressure.

I supposed you could get a similar effect if you used a fluid with a higher boiling point - like cooking oil for example!

You could also do without the pressure cooker while still reducing cooking times if you could increase the air pressure in your kitchen, but that might get a bit expensive.
« Last Edit: 23/02/2010 20:15:52 by Geezer »
 

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How Much Pressure In My Pressure Cooker ?
« Reply #6 on: 23/02/2010 20:12:17 »

 

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