Steam Coil Design

You need to calculate the surface of the coil and the jacket end build a new coil with the same surface

Yes dovrak, you are correct.

The same area of heat exchange must be maintained as the existing coil, with the same material and thickness of the coil wall. Otherwise the area must be recalculated depends on the new material and new thickness. Because the skin temperature, and amount and rate of heat transferred depend on both : material and thickness of coil wall.

Thank you

I will do this and add the information to the bid document for the fab. shop to include in their fabrication verification

Thanks again

cadtrans,

If you´d like detail steam coil and steam jacket calculations e-mail me to my CR4 box with your private e-mail address and I will gladly send you some literature.

Thank you for the help.

I am a Mechanical/Process designer in Northern California with several clients.

I had a mechanical PE working with me to review and wet stamp projects as needed.

He has decided to do something else and has left me out in the cold.

I have been unable to find a local engineer to work with. I normally add the PE cost to my proposal to me clients. It is a struggle to find someone.

I could use all the help avalible.

rgrant874@comcast.net

Thanks again

Jim Smith from Armstrong-Hunt, Inc., Armstrong Heat Transfer Group (Manufacturer of Heavy Duty Industrial Steam/Fluid Finned tube heat transfer coils).

Our rep in N. California is:

Calpacific Equipment Co. 1201 Fifth St., Berkeley, Ca 94710

Contact: Mr. Jay Capell @ 510-527-6728 e-Mail: jay@calpacequip.com

If you need further help contact me via e-Mail at jrsmith@armstronginternational.com or Office 330-837-0440.

Regards, Jim Smith, C.E.M., Product Mgr./Power-Utilities Group Armstrong Heat Transfer Group

Thanks

Dear Mr.cadtrans,

The Heat Transfer Equation is simple.

Principle involved is HEAT LOST = HEAT GAINED

HEAT LOST = W x Sp.Heat. x Temp.diff.

Heat Transfer = U x A x Delta T where U = Over-All Heat Transfer Co.eff., A = Area required, Delta T = Log Mean Temp.

Care to be taken for Fouling Factor/Scaling Effect, Radiation Loss Pressure Drop etc.

Best thing, if already used exchanger is OK in terms of Performance, simply replace Identical one with same quality of material etc. as felt by other CR4 Members.

DHAYANANDHAN.S