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LMTD for CROSS-CURRENT Heat Exchanger
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georgeverghese
Chemical
For cross current flow HX, to get corrected LMTD, see diagram (h), fig 11-4 on page 11-6, chapter of heat transfer equipment, in Perry Chem Engg Handbook, 7th edition.
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It's different; a counter-flow HX has pipes running parallel, but the flows are in opposite directions, while a cross-current HX has pipes running perpendicular to each other.
There are a lot of configuration choices, even for cross-flow, so you need to describe your configuration in detail --> number of shells, number of rows, number of passes.
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There are a lot of configuration choices, even for cross-flow, so you need to describe your configuration in detail --> number of shells, number of rows, number of passes.
Please do not solicit violations of copyright; this is not condoned here.
TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! faq731-376 forum1529 Entire Forum list
georgeverghese
Chemical
You can also look up Perry 6th edition for the same. A more detailed illustration may be found in the ever popular "Process Heat Transfer " book by DQ Kern in Fig 16.17 in the chapter on Extended Surfaces.
Seems like Kern goes into a little more detail on the derivation than Perry
TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! faq731-376 forum1529 Entire Forum list
TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! faq731-376 forum1529 Entire Forum list
the same counter flow formula is using for cross flow calculation. i attached a excel file of counter flow and co-current. and go to the link cross flow online calculator. the online cross flow calculator follow the same formula to find the LMTD of counter flow.you can check. if something i missed , you can correct me
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