Two phase flow in a pipe

Dear Sir,

I am from UPL , Ankleshwar.

I have one query of two phase flow(Liq. & Vapor) in a pipe.

I am using NH3 as a refrigerant in my reactor coil, the coil is fisrt vertically downward then it comes out from the bottom in the circular form.

I think when liq. ammonia enters the coil, while travelling vertically downwards some of the liq gets vaporised and it creats vapor lock. which prevent the liq flow.

Please suggest, How to avoid two phase flow in a pipe.

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Regards
Neeraj Tiwari
MaxPro Dept.
Mob: 9879165630
Visit:http://www.uplonline.com