Heat Exchanger

You can't get there from here.

You also need to know the process and heat exchange fluids, the temperatures at the inlets, and the desired process fluid outlet temp (among other things).

You should really get a book on heat exchanger design. Once you have the design, have it checked by a real engineer. This isn't something you should rely on answers from an open forum for.

Or maybe this is a homework question. If so, if you want to learn anything at all, put some effort in and study the textbook and class notes.

Use triangles on a drawing. Set-out the matrix so that the number of tubes fits into the shell diameter.

Different heat exchangers have different goals, for example, low cost, high efficiency (defined in different ways), low weight, high corrosion resistance, low (or high) pressure drop for one (or both) fluids, etc. Message from #1 is correct

But you (and Mikerho) are answering a question he hasn't asked. He's already decided dimensions and if he hasn't taken account of your criteria it's his hard luck!

The question he's asked is just a geometrical one, and PWSlack has answered it.

Codey

Thank you. PWSlack's answer is good, but some things are left out, like there is a reference to drawing. Is the suggestion including making a drawing? (!) How close to the shell do you want the tubes? Are you then supposed to count the tubes? Drawing the end view and counting the tubes sounds too low tech for this job.

PS with variable K you still do not have a number. See next

Bingo!

Hi to all,

Thanks for every one for their suggestions as per his knowledge finally i got formula and want to share to all might be helpful to any other that is

No of tubes in HE = .782*D*D/(K*Pitch*Pitch)

Where D = Shell diameter

K = Tube constant it may vary from 1.2 to 1.8,

Pitch = Tube sheet pitch.

Is there an explanation that goes with this formula?

(Where does 0.782 come from? What is "tube constant"?)