Heat Exchanger Design for Shell and Tube Type H.E.

Q = K A (LMTD).

I would be wary of a single heat exchanger. Whenever it needs cleaning or repair, all 7 engines will be down.

I will make it as centralized HE and distributed to individual engine with isolation valve

Alas, that will not help.

That's just plain daft.

That is fine as far as engines are concerned. How about the exchanger? What Tornado concern is, "if the (single) exchanger fails/under delivers and end up in shutdown, you need to stop all the engines.

Hence the general suggestion would be to have 'stand-by'. If cost is the constrain, I rather suggest to have two exchangers, each to cater 4 engines and get the pipe lines inter connected. If one exchanger fails, the other would permit to run 4 engines at least, or even 5 or 6 engines with a bit of over load on the exchaner or under load on engines

if we do all the math and inclue drawings do we get a cut of your check on Friday?

Would that increase the maintenance cost?

1. Start with energy balance. There are three basic equaztions:

Q = U A LMTDc

Q = WC (T1 - T2)

Q = mc (t2 - t1)

2. Determine LMTDc and U from individual heat transfer coefficient and fouling factor.

3. Calculate A, the surface area required.

4. Determine the final configuration

Dear Mr. ARNULFO PALACIO,

First Decide the quantum of Heat to be recovered and the use the BASIC EQUATION, HEAT LOST from the Medium where heat is to be recovered = HEAT GAINED by the Medium to be heated In the HEAT EXCHANGER and use the Equation W x(Tin-Tout)xSp.Heat = U x A x LMTD. Pl. refer Hand Book on Heat Transfer.

While deciding the factors, fluid velocity, fouling factor etc. to be duly accounted, and perhaps additional HEAT TRANSFER AREA to the EXTENT of 10% be provided.

DHAYANANDHAN.S