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Emdesign
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Join Date: Apr 2010
Posts: 9

Dry Ice

04/24/2010 8:18 AM

Is the amount off dry ice enough in the container to cool 48 kg steel from 80 °C to 20 °C?

Container is W=0.8 m (0.58) Depth 0.6m (0.37) H= 1.05 m (0.69) (inside dimensions)

I have to open the container 16 times on 12 hours

0.4W/m2/°C

density of dry ice 1.2-1.6 kg/dm3

Specific heat 0.8kJ/kg/°C
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Tornado
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Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
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#1

Re: dry ice

04/24/2010 5:52 PM

I am trying to see where the amount of dry ice is specified....

If the container is completely full, where do you put the steel to cool it?

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TVP45
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Join Date: Jul 2007
Posts: 4448
Good Answers: 143
#2

Re: dry ice

04/24/2010 7:30 PM

Why in the world would you use dry ice for this? Cold water, lad, cold water.

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Mikerho
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Hobbies - Musician - Engineering Fields - Chemical Engineering - New Member Engineering Fields - Control Engineering - New Member Engineering Fields - Instrumentation Engineering - New Member

Join Date: Jan 2007
Location: Moses Lake, WA, USA, Thulcandra - The Silent Planet (C.S. Lewis)
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#3

Re: dry ice

04/25/2010 12:52 AM

Your post has abundant information. However, it is not connected in a logical manner.

How intimate is the dry ice in contact to the precious cargo?

What the hell are you trying to do?

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Emdesign
Member

Join Date: Apr 2010
Posts: 9
#4
In reply to #1

Re: dry ice

04/25/2010 7:13 AM

I can put 3 steel bars in the container on an holder.

There is 100mm of empty space in the container at the beginning.

Max amount of dry ice 5,8x3,7x5.9 dm =126dm3x1.3kg/dm3=163 kg
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Emdesign
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Join Date: Apr 2010
Posts: 9
#5
In reply to #2

Re: dry ice

05/02/2010 1:11 PM

Can you cool with water till - 30°C
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TVP45
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Posts: 4448
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#6
In reply to #5

Re: dry ice

05/02/2010 1:15 PM

Your post said "20 °C".

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 "Well, I've wrestled with reality for 35 years, Doctor, and I'm happy to state I finally won out over it." Elwood P. Dowd
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Emdesign
Member

Join Date: Apr 2010
Posts: 9
#7
In reply to #6

Re: dry ice

05/03/2010 3:34 AM

It is -30°C
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TVP45
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Posts: 4448
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#8
In reply to #7

Re: dry ice

05/03/2010 6:34 AM

Good luck with your homework, but try to get the numbers right next time.

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 "Well, I've wrestled with reality for 35 years, Doctor, and I'm happy to state I finally won out over it." Elwood P. Dowd
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