Re: Two phase flow in a pipe

Dear Sir,

The ammonia we are using as refrigerant and we are sending the ammonia as a saturated liq.

When the ammonia travell through vertically downward pipe some of its gets evaporated which might be creating the vapor lock for further coming loq.

Pls suggest how to avoid the vapor lock..

Neeraj

Erik Scheir wrote:

> tiwarinj schreef:
>
> > 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.
> >
> > --
> > Regards
> > Neeraj Tiwari
> > MaxPro Dept.
> > Mob: 9879165630
> > Visit:http://www.uplonline.com
> >
> >
> >
> >
> >
> >
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> The pressure in the system has to be above the vapour pressure of the
> liquid in order to avoid vaporisation.
>
>
> Erik
>
>
> [Non-text portions of this message have been removed]
>
>
>
> =========================================
> PipingOffice - Excel Spreadsheets for Piping Calculations
> http://www.pipingoffice.us/
> =========================================
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>
>
>
>
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>

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>

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