CFD Online Logo CFD Online URL
Home > Forums > Main CFD Forum

heat exchanger

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Display Modes
Old   November 14, 2006, 04:16
Default heat exchanger
S K Prasad
Posts: n/a
Hi, I'm looking for a formulation to find the overall heat transfer coefftts for heat exchangers. As far as i know, the experssion is analogous to electrical resistance in series and is given by,

1/Uavg*A = 1/(hA)hot + 1/(hA)cold + 1/(UA)metal.

I'm looking for an experssion for convective heat transfer coefficient, h as a function of local fluid properties like velocity, temperature etc. I hope the expression should be unique for the type of heat exchanger like cross flow unmixed, parallel flow etc. I'm not sure. Can anybody help me with this. thanks in advance.
  Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Heat Exchanger Model sak2129 FLUENT 2 December 8, 2014 08:28
Macro Heat Exchanger not selecting (Please help!) zdeth FLUENT 2 September 11, 2012 13:52
UDF for Heat Exchanger model francois louw FLUENT 2 July 16, 2010 02:21
Heat Exchanger Simulation tightaznbreaka FLUENT 0 March 18, 2010 16:45
Convective Heat Transfer - Heat Exchanger Mark CFX 6 November 15, 2004 16:55

All times are GMT -4. The time now is 16:38.