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lynark
27-09-2010, 01:28 PM
Hi,

Is there a rule of thumb in designing a shell and tube condenser? if non how do you have any links to provide so i can study the design. Because my boss only taught me his rule of thumb with really explaining how he do it. And when i select the design i just based it on the manufacturer catalog.


thank you

lynark

NoNickName
27-09-2010, 03:28 PM
Well, you need to know surface, LDTM, specific heats of fluids, bla bla bla... are you a manufacturer of s&t condensers?

lynark
28-09-2010, 12:00 AM
Well, you need to know surface, LDTM, specific heats of fluids, bla bla bla... are you a manufacturer of s&t condensers?


Hi NNN,

More of a local fabricator. We fabricate our own shell and tube condenser for the refrigeration system. So I want to know how they compute it, because right they are using a standard selection. I mean for example 89TR capacity, they will use 6 pass of 26" x 18' because of the sqft surface area. I don't know if its correct or what are the computation behind it.

NoNickName
28-09-2010, 07:38 AM
One hell of a condenser!
You could use coolpack and calculate the heat transfer of each pipe individually.

nike123
28-09-2010, 08:15 AM
This is cheap software:
http://www.freedownloadscenter.com/Business/Misc__Calculators/Shell_and_Tube_Heat_Exchanger_Design.html

This one is expensive:
http://www.lv-soft.com/software/fachbereiche/waermeuebertrager/paketwaerme/designofshell.and.tubeheatexchangers.wts..htm

lynark
29-09-2010, 11:52 PM
One hell of a condenser!
You could use coolpack and calculate the heat transfer of each pipe individually.

hi NNN,

Well i don't know if its really that big. Can you help me in using the coolpack? What are the details you need? by the way our system is ammonia with open type compressor.

lynark
29-09-2010, 11:53 PM
This is cheap software:
http://www.freedownloadscenter.com/Business/Misc__Calculators/Shell_and_Tube_Heat_Exchanger_Design.html

This one is expensive:
http://www.lv-soft.com/software/fachbereiche/waermeuebertrager/paketwaerme/designofshell.and.tubeheatexchangers.wts..htm


Hi Nike,

i'll try to use first the cheap one :p