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# Coil In Storage Tank

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4 replies to this topic
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### #1 somayehn

somayehn

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Posted 18 September 2011 - 04:07 AM

dear all
I must design a storage tank that need coil for heating. it is a nonhelical coil inside a tank and using steam as fluid coil. what can calculate the overal heat transfer coffe for this coil?
there is no mixer for the tank.

### #2 ankur2061

ankur2061

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Posted 18 September 2011 - 06:23 AM

somayehn,

You need to refer the following book:

"Process Heat Transfer" by D. Q, Kern

Refer page 720 to 722 of chapter 20 of this book. It provides the guiding equations for heat transfer coefficients for coils for both agitated and non-agitated vessels.

Hope this helps.

Regards,
Ankur.

### #3 kkala

kkala

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Posted 21 September 2011 - 10:34 AM

Useful data could be found in the thread http://www.cheresour...1358#entry51358, in addition to useful post by Ankur. If the stored liquid is fuel oil or similar, mentioned info is applicable 100%, to my understanding. Hope of a successful effort from you.

### #4 srfish

srfish

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Posted 22 September 2011 - 10:11 AM

Hello,

You can use the usual calculation formula for the overall heat transfer coefficient thats found in any heat transfer book, The inside film coefficient for steam will be in the 2000 t0 2500 BTU/hr-ft^2-F. It will be non-controlling and have little effect, For outside the coil, use a natural convection coefficient like the one found in Churchill and Chu, Int. J Heat Mass Transfer, 18,1975.

### #5 somayehn

somayehn

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Posted 25 September 2011 - 01:32 PM

dear all
thanks for your replies and guidance.