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Les · 01-25-2003, 01:05 AM

Some sums.
Calculators* used for Jet sums, unfortunately, employ a "Head Loss" proportional to "flow"^1.75 power relationship.Unfortunately, because analysises of Billa data appear to show a quadratic relationship(eg http://forum.oc-forums.com/vb/showth...6&pagenumber=1 ).

http://www.jr001b4751.pwp.blueyonder.co.uk/ChJet1.jpg

* http://www.aps.anl.gov/asd/me/

Flomerics Jet http://www.coolingzone.com/Content/...las/fcalc10.htm
Kryotherm Channel http://www.kryotherm.ru/soft.htm

Edit: Have removed "Heat Tranfer Coeff"v "Pressure Drop"graph and reposted (below) using a quadratic relationship between PD an Flow.Have left link to graph.

01-25-2003, 01:05 AM	#17
Les Cooling Savant Join Date: Oct 2001 Location: Wigan UK Posts: 929	Some sums. Calculators* used for Jet sums, unfortunately, employ a "Head Loss" proportional to "flow"^1.75 power relationship.Unfortunately, because analysises of Billa data appear to show a quadratic relationship(eg http://forum.oc-forums.com/vb/showth...6&pagenumber=1 ). http://www.jr001b4751.pwp.blueyonder.co.uk/ChJet1.jpg * http://www.aps.anl.gov/asd/me/ Flomerics Jet http://www.coolingzone.com/Content/...las/fcalc10.htm Kryotherm Channel http://www.kryotherm.ru/soft.htm Edit: Have removed "Heat Tranfer Coeff"v "Pressure Drop"graph and reposted (below) using a quadratic relationship between PD an Flow.Have left link to graph. Last edited by Les; 01-26-2003 at 12:14 AM.