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[monu]

Hallo,

can anyone give me the process of how the Helical Coil of Fired Heater designed.

the Diameter of the winding, Numer of windings of Coils.

on which factor is the Number of passes in Heater depends.

what are the minimum required design factors to design a Heater.

Thanks

[Art Montemayor]

Monu:

The method of "designing" (here, I have to assume a process design, and not a mechanical one) a helical coil subjected to direct-fired heat from a burner is very much like any other direct-fired heater - as is found in heat transfer text books such as Don Kern' classical Opus: Process Heat Transfer. There are other sources and you should have all this material under your belt (or well-understood) in order for you to understand just what other will recommend to you. Otherwise, it will be a waste of time on your part as well as the person dedicating their time to help you out.

I've operated and modified Helical coils within a direct-fired furnace. There were used as reboil heat source for the Girbotol MEA process. The coil was horizontally oriented and made of 2", schedule 40, 316 SS pipe material. We pumped 25%wt. MEA solution through it at a rate of 75 gpm. I didn't design or fabricate the original design but I did enough modifications such that I understand the process design basis and methods since I did those also.

You should specify more specific data and information about what you are doing or proposing. For example: what is the orientation, the application, the fluid involved, the flowrate, the heat load, the fuel employed, the type of furnace, what is the application, etc. etc. Otherwise, you won't get very much specific information. Mechanical arrangement and orientation has a lot to do with the heat transfer and the efficiency of the unit.

Is this a homework problem, or is this a general question for building up your knowledge base?