Abdelkareem:
First of all, your skimpy data sketch shows a simple U-tube or bundle - NOT a "coil". Your lack of simple, accurate, and detailed basic data is going to raise a lot of questions with our experts on this Forum. The first question is going to be: What KIND of coil are you referring to?
- a helical coil?
- an Archimedes spiral?
- another variation?
I strongly recommend you go to: http://www.jfdcoil.c...ducts-coils.asp
Read all of the information found there and download the related type of coil data sheet, fill it in with readable script and submit it to our members in your next post here. Also, give our member ALL of the basic data. What fluid goes in the coil? (I believe I know exactly what you are struggling to explain). I've designed and built several natural gas field heaters in my time; but I want YOU to work on defining what you want or need. You must learn sometime or somehow to accurately define what you are referring to.
I also moved your thread from the hydrocarbon Forum to here at the Process Heat Exchange Forum because that is what I believe you are trying to define - how to heat natural gas in the field. Am I correct? (I would appreciate a response).
Dear Sir,
Thanks for your response.
Regarding the sketch, it was my mistake when I expressed the coil by U tube, actually I was planning to use Zig-Zag coil but ididnt show that on the sketch.
The fuel which is inside the coil is CNG compressed natural gas (density =0.71 kg/m3) has the following composition :
Methane (C1): Mole %94.06
Nitrogen: Mole % 4.22
Carbon Dioxide: Mole %0.41
Ethane (C2): Mole %1.24
Propane (C3): Mole %0.06
1-Butane (C4): Mole % 0.00
N-Butane (n-C4): Mole %0.00
1-Pentane (C5): Mole %0.00
N-Pentane (n-C5): Mole %0.00
Standard Density:Kg/Sm30.71
Relative Density 0.58
The Max. inlet pressure to the coil is 250 barg. the Min inlet pressure is 30 Barg. regarding the pressure drop, the max. acceptable pressure drop in the coil 3 barg.
FYI, the ambient temperature is (15-50 C).
Regards,
Abdelkareem.