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Unread 04-15-2003, 04:30 PM   #16
Les
Cooling Savant
 
Join Date: Oct 2001
Location: Wigan UK
Posts: 929
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Quote:
Originally posted by unregistered
not a whole bunch of data on chilled coolant wbs
my tests have gone to 5°C only, with an 'open' wb
what I did see was a marked increase in flow resistance
(and note that my pump is big enough to ignore - not normally the case)

as the 'theory' would lead one to believe, fin sizing, spacing, etc. would necessarily be rather different
- but as the dT goes up, the whole task becomes easier

perhaps Les will run some bp thickness calcs for us ?
(my thought is for greater thickness)

chilled water is the future (for those not already there)
Ugh, help,dunno,but:
Found little influence(<10%) of temp on the "3 elements" I use to guess* Pressure drop.
Larger effect on Convection Coeff calculated with both Kryotherm and Flomerics Jet Impingement**
Some exploratory sums:



Perhaps no difference in the Temp response of the Swiftech462 and the WW
Yes, the lower Conv. Coeff. implies a thicker bp. - may haveanother look (Previously Predictions at 20c - http://<br /> <a href="http://www.j...Guess1.jpg</a> )


* "SF Pressure Drop 5.0" - http://www.software-factory.de/
** Kryotherm [ur]http://www.kryotherm.ru/soft.htm[/url]
Flomerics http://www.coolingzone.com/Content/D...as/fcalc10.htm

EDIT: Deleted repetition.

Last edited by Les; 04-15-2003 at 04:45 PM.
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