Water-based Heat Transfer in Closed System 1

[jenndigo]

In a uniform (3 1/2 foot height) 32 gallon, closed hot water tank where 1/4 of the water is at 170 degrees, and 3/4 is at 120 degrees, can final temp raise to 130 degrees in under 90 minutes?

It's been 5 years since physics in college and my memory for specific formulas in this discipline is rusty and my time, far too short!

Any help would be greatly appreciated...

 

[monaco8774]

Jendiggo

Just an aproximation but if you use a lumped capacity solution and assume a heat transfer of 600W/m2K, I recon it should take around 51 minutes

Of course if you want to get detailed you could probably fill up a set of conference papers on the subject

what is the insulation, how good is the mixing, what is the change of heat transfer properties as the bulk equalises etc..

 

[jenndigo]

Monaco8774

Yes! You've made my day, and it's still before 9!

Thank you so much for confirming my late-night findings. Although it does peak my curiousity, I'll leave you to write the conference papers on this one. Thanks again, I really appreciate your help, and the time you put into it.