Heat Transfer
Heat Transfer
(OP)
Hi,
I have a material that sits at 100 degrees for 1 minute. The material is aluminium and has an area of 7600mm2. I need to work out how high off the surface it would be suspended over so that the surface would not reach over 40 degrees. The surface is the same area as the aluminium and is made of wood. The room temp is 20 degrees.
This is way to advanced for my knowledge of thermodynamics. Is this possible to work out?
Can anyone help?
Thanks
I have a material that sits at 100 degrees for 1 minute. The material is aluminium and has an area of 7600mm2. I need to work out how high off the surface it would be suspended over so that the surface would not reach over 40 degrees. The surface is the same area as the aluminium and is made of wood. The room temp is 20 degrees.
This is way to advanced for my knowledge of thermodynamics. Is this possible to work out?
Can anyone help?
Thanks





RE: Heat Transfer
This sounds like a combination radiation/natural convection problem. What are the finishes on the surfaces, or, in other words, what are the IR emittances of the wood and aluminum surfaces? You know a picture is worth a thousand words. What are the rest of the boundary conditions?
Tunalover
RE: Heat Transfer
This is a transient problem, and non-trivial. Nevertheless, if it started at 25C and is heated in 100C air, without massive forced convection, it's likely that the aluminum itself hasn't even gotten to 40C yet.
Rather than coming up with such a problem, solve the problem of how long it takes to get the aluminum up to 100C in the first place.
TTFN

FAQ731-376: Eng-Tips.com Forum Policies
Need help writing a question or understanding a reply? forum1529: Translation Assistance for Engineers
Of course I can. I can do anything. I can do absolutely anything. I'm an expert!
RE: Heat Transfer
RE: Heat Transfer
No supports. No environment factors (air flow, speed, support system, plate thickness, etc.)
RE: Heat Transfer
Tunalover