Chronology Current Month Current Thread Current Date
[Year List] [Month List (current year)] [Date Index] [Thread Index] [Thread Prev] [Thread Next] [Date Prev] [Date Next]

Re: Looking for notes: Heat Interchanger (simplified model)



A 'model' is a (usually mathematical) approximation of the real world.
A GOOD model is one that can be worked 'easily' and gives 'pretty
good' results.

e.g. the Copernican Model of the solar system (not as exact as the
reigning Ptolmeic model but far superior in enough ways for it to
become the winner.



Use a counterflow model and make gross assumptions such as:

Assume a uniform thermal impedance separating the two flows at each point.

Approximate the thermal profile for given temp parameters.

Assume given the (2) input and (2) output T's

Reality check - make sure that the heat lost by one side equals the
heat gained by the other. (sorry Jim)

Maybe you could (should?) assume only the two input temperatures and
a constant thermal impedance / unit length.

Sounds like some good exercise.

OK, ya'll, at 12:33 PM -0300 9/7/03, Roberto Carabajal wrote:
Distinguished Teachers:

Please, I am looking notes for a very simplest model of heat interchanger
between two liquid fluids ( in example two tubes in contact) without fase
changes. The central idea of the class are the differential equations
describing the model, but I am in trouble to find the appropiate
simplified case just not to far of reality.



--
Chuck Britton Education is what is left when
britton@ncssm.edu you have forgotten everything
North Carolina School of Science & Math you learned in school.
(919) 416-2762 Albert Einstein, 1936