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Offlinefrankwhite85
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pcing in high elevation
    #23945154 - 12/21/16 03:21 AM (7 years, 1 month ago)

I'm up at about 4500 feet, I PC my grain jars for 2 hours.  Should I be going longer?


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Offlinetump
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Re: pcing in high elevation [Re: frankwhite85]
    #23945195 - 12/21/16 04:20 AM (7 years, 1 month ago)

Its fine. Keep at 2 hours.


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Offlinewtfcrazymofo
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Re: pcing in high elevation [Re: frankwhite85]
    #23945228 - 12/21/16 05:11 AM (7 years, 1 month ago)

Isn't it hotter when higher?


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Offlinetump
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Re: pcing in high elevation [Re: wtfcrazymofo]
    #23945230 - 12/21/16 05:16 AM (7 years, 1 month ago)

No waters boiling point is lower at lower pressures. But inside a pressure cookers the pressure is the same inside cooking. Regardless of outsidr pressure. Interesting if you take room temp water and depressure it then it boils and keep to no pressure it boils to instantly into ice.


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Invisibleblindingleaf
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Re: pcing in high elevation [Re: tump] * 1
    #23945264 - 12/21/16 06:07 AM (7 years, 1 month ago)

im hotter when Im higher


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Offlineymca
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Re: pcing in high elevation [Re: blindingleaf]
    #23945289 - 12/21/16 06:37 AM (7 years, 1 month ago)

Quote:

blindingleaf said:
im hotter when Im higher




:goodshit:


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OfflineWeavieWonder
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Re: pcing in high elevation [Re: ymca]
    #23945392 - 12/21/16 08:18 AM (7 years, 1 month ago)

Read about this from multiple sources outside the Shroomery.  Might be worth looking into.

    If you are cooking at high altitudes the cooking times must be longer, as water and cooking liquids come to a boil more slowly. A rule of thumb to remember is to increase the cooking time by 5% for every 1,000 feet above the first 2,000 feet ( 3,000 feet above sea level, add 5% to cooking time; 4,000 feet, add 10% ; and so on).


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InvisibleMad Season
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Re: pcing in high elevation [Re: WeavieWonder]
    #23945405 - 12/21/16 08:24 AM (7 years, 1 month ago)

And also bs. Pressure cooker gauges were calibrated at 14.7 psi (sea level). It will keep reading 0 until the pressure passes 14.7, so 15 psi is 29.7 psi regardless of what elevation (unless you're under sea water)


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Invisiblefreespeech
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Re: pcing in high elevation [Re: Mad Season]
    #23945507 - 12/21/16 09:13 AM (7 years, 1 month ago)

It's not BS, because that quote is talking about normal cooking, not pressure cooking.


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InvisibleMad Season
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Re: pcing in high elevation [Re: freespeech]
    #23945512 - 12/21/16 09:16 AM (7 years, 1 month ago)

:lol: no it's not. It came from here:

http://www.fagoramerica.com/about_us/article_library/about_pressure_cooking#Pressure

Also even more of a BS quote because it says, "water boils more slowly" uhh what? Water boils more quickly lol. Just at a lower temperature..


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Edited by Mad Season (12/21/16 09:26 AM)


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OfflineWeavieWonder
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Re: pcing in high elevation [Re: Mad Season]
    #23946941 - 12/21/16 06:26 PM (7 years, 1 month ago)

Quote:

Mad Season said:

Also even more of a BS quote because it says, "water boils more slowly" uhh what? Water boils more quickly lol. Just at a lower temperature..




I have chef friends out in Colorado that tell me water takes forever to boil, and when it does, it is kind of a lazy boil.  They keep a pot of boiling water going in their kitchen at all times because of this.  Wanna say they are at about 6,000 ft.  Science wise, I can't explain how this is so.  Didn't take a physics class.  That's what the real world is telling though.  Not much into theory.


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Offlinetombosley8
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Re: pcing in high elevation [Re: WeavieWonder]
    #23946968 - 12/21/16 06:33 PM (7 years, 1 month ago)

Quote:

WeavieWonder said:
Quote:

Mad Season said:

Also even more of a BS quote because it says, "water boils more slowly" uhh what? Water boils more quickly lol. Just at a lower temperature..




I have chef friends out in Colorado that tell me water takes forever to boil, and when it does, it is kind of a lazy boil.  They keep a pot of boiling water going in their kitchen at all times because of this.  Wanna say they are at about 6,000 ft.  Science wise, I can't explain how this is so.  Didn't take a physics class.  That's what the real world is telling though.  Not much into theory.



I live at a high altitude, just about the same as what your talkng about, and water boils faster for sure and a quick google search will show you that.

You have to cook things for longer at a higher altitude because water boils at a lower temp thus not heating up enough(as much as sea level boiling water temp)

If water is boiling at a lower temp then wouldn't there be more steam produced at a lower temp thus creating more pressure with less heat at higher altitudes?

Your friends at high altitudes who keep[ water boiling is probobly because they are trying to make the water as hot as possible thus getting closer to a normal boil at sea level.

So my logic for that is a heavily rolling boil at high altitude is about the same heat as a regular boil at sea level.


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OfflineWeavieWonder
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Re: pcing in high elevation [Re: tombosley8]
    #23947102 - 12/21/16 07:07 PM (7 years, 1 month ago)

Quote:

Mad Season said:


If water is boiling at a lower temp then wouldn't there be more steam produced at a lower temp thus creating more pressure with less heat at higher altitudes?






Good question, hopefully somebody can answer that one.  This is interesting stuff.  One of the reasons I love cultivation.  A great blend of the sciences.  Always learning something about something. 

Since you live at a more elevated part of the world, what are your cook times? 
I live at 1,000 ft, and I find that 2 hour cook times are sufficient.


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Offlinetump
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Re: pcing in high elevation [Re: WeavieWonder]
    #23947376 - 12/21/16 08:58 PM (7 years, 1 month ago)

Quote:

WeavieWonder said:
Quote:

Mad Season said:


If water is boiling at a lower temp then wouldn't there be more steam produced at a lower temp thus creating more pressure with less heat at higher altitudes?






Good question, hopefully somebody can answer that one.  This is interesting stuff.  One of the reasons I love cultivation.  A great blend of the sciences.  Always learning something about something. 

Since you live at a more elevated part of the world, what are your cook times? 
I live at 1,000 ft, and I find that 2 hour cook times are sufficient.



Nope. The water evaporated at the same gor the open surface area. Temp being lower cause of pressure works the same. Think of trying to evaporate a cup of boiling water quickly. Would you dump in a tube with litte surface area or on the counter where huge surface area. The counter of course.


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OfflineWeavieWonder
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Re: pcing in high elevation [Re: tump]
    #23947413 - 12/21/16 09:22 PM (7 years, 1 month ago)

And then I poured some water in a river.  And I was like whoah, where did all that water go?  Ya know?  Fml.:facepalm3:


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Re: pcing in high elevation [Re: tump]
    #23947451 - 12/21/16 09:38 PM (7 years, 1 month ago)

Your missing the point of the answer to the question you asked. On purpose too.


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OfflineWeavieWonder
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Re: pcing in high elevation [Re: tump]
    #23947521 - 12/21/16 10:09 PM (7 years, 1 month ago)

The only question I've asked on this thread is how long Mad Season's cook times are at his elevation.  You are confused about the subject at hand, and just in general.  I remember you from previous threads.  You are a flame magnet, and no longer wish to converse with you.  Good day, sir.


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InvisibleMad Season
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Re: pcing in high elevation [Re: WeavieWonder]
    #23947636 - 12/21/16 10:54 PM (7 years, 1 month ago)

I always cook 2 hours and my current elevation is 2500 ft

I go to the mountains a lot and I've never had issues getting a rolling boil in water xD


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OfflineWicked Burn
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Re: pcing in high elevation [Re: Mad Season]
    #23947671 - 12/21/16 11:09 PM (7 years, 1 month ago)

The temperature at which water boils depends on the amount of atmospheric pressure the water is in.  At higher elevations, the water will be under less pressure due to less atmosphere being above and around it.  However, in a pressure cooker, you are creating an atmosphere.... A nice thick moist one that has nothing to do with the atmosphere outside of the pressure cooker.

tldr, it's a fucking pressure cooker...the pressure outside of it has nothing to do with the pressure inside of it.


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InvisibleMad Season
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Re: pcing in high elevation [Re: Wicked Burn]
    #23948254 - 12/22/16 07:36 AM (7 years, 1 month ago)

I disagree, pressure is equal on all sides. The pressure of the atmosphere is the starting point of the pressure for the PC. Assuming the PC's gauge reads 0 at current atmospheric pressure 15 psi is 29.7 psi overall at sea level or 27 psi overall at 5500 ft above sea level.

However if the gauge was calibrated to 14.7 psi, it will read 0 until it passes 14.7. Meaning that the pressure will be the same at any elevation above sea level. Once you go below sea level the gauges pressure should start increasing, so getting a PC to 15 psi might actually mean the contents are only at 12 psi if the gauge started at 3 psi, which is still actually an overall pressure of 29.7.

I'm like 99% positive they make PC gauges calibrated to sea level atmospheric pressure. I know I've read they do somewhere.

This could also explain why some people's weights start jiggling at 13 psi, the contents are actually at 15 psi, but the gauge didn't start reading it until after 2 psi of pressure, assuming they live in a higher elevation. I tend to just tape coins on my rocker xD. Makes the bitch hit 15 no probs, and although it says 15 psi, its contents could actually be 16-17 psi if that makes sense.

Still an overall of 29.7 psi @15 tho regardless of which area you're in, if the gauges 0 is constantly 14.7.


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Edited by Mad Season (12/22/16 08:33 AM)


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