Heat Transfer Across Simple Block
Heat Transfer Across Simple Block
(OP)
Hi,
It has been far too long since my heat transfer class in college and I am struggling to do a simple (I think?) problem. Basically I have 3 materials sandwiched together:
1. A heated material (probably stainless at 450F)
2. An insulating material (maybe PTFE...still looking into it)
3. A material I want to keep below 185F
I am trying to figure out what T2 will be in the attached diagram. I know the thermal conductivity constant (k), the length, and T1. What equation can I use (or what additional info do I need) to solve for T2?
Thanks!
Aaron
It has been far too long since my heat transfer class in college and I am struggling to do a simple (I think?) problem. Basically I have 3 materials sandwiched together:
1. A heated material (probably stainless at 450F)
2. An insulating material (maybe PTFE...still looking into it)
3. A material I want to keep below 185F
I am trying to figure out what T2 will be in the attached diagram. I know the thermal conductivity constant (k), the length, and T1. What equation can I use (or what additional info do I need) to solve for T2?
Thanks!
Aaron





RE: Heat Transfer Across Simple Block
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RE: Heat Transfer Across Simple Block
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RE: Heat Transfer Across Simple Block
I can use my desired temperature for T2, and calculate q dot, but then I'd need to verify in my system that q dot is equal to or less than what I've calculated, and I want to do the opposite: verify with a calculation that T2 will be less than or equal to my material's melting temperature. Any ideas?
Thanks, again.
RE: Heat Transfer Across Simple Block
Q dot = (T1-T3)/(Ri+Rp)
T2 = (T1-T3)*Rp/(Ri+Rp)
something like that...
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FAQ731-376: Eng-Tips.com Forum Policies
RE: Heat Transfer Across Simple Block
Also be aware there will be contact resistances at the interfaces between your materials that could be important to you.
RE: Heat Transfer Across Simple Block
Aaron