Re: Two phase flow in a pipe

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
>
>
>
>
>
>
> =========================================
> PipingOffice - Excel Spreadsheets for Piping Calculations
> http://www.pipingoffice.us/
> =========================================
> Main site: http://www.pipingdesign.com
>
>
>
>
> SPONSORED LINKS
> Mechanical engineering
>

<http://groups.yahoo.com/gads?t=ms&k=Mechanical+engineering&w1=Mechanical+engine\ ering&w2=Mechanical+engineering+jobs&w3=Cad+drafter&w4=Process+piping&w5=Mechani\ cal&c=5&s=114&.sig=qAVe0S3R007ZZC_VnrxgVg>
> Mechanical engineering jobs
>

<http://groups.yahoo.com/gads?t=ms&k=Mechanical+engineering+jobs&w1=Mechanical+e\ ngineering&w2=Mechanical+engineering+jobs&w3=Cad+drafter&w4=Process+piping&w5=Me\ chanical&c=5&s=114&.sig=S1FagOodk-Cf2O2QKteRYA>
> Cad drafter
>

<http://groups.yahoo.com/gads?t=ms&k=Cad+drafter&w1=Mechanical+engineering&w2=Me\ chanical+engineering+jobs&w3=Cad+drafter&w4=Process+piping&w5=Mechanical&c=5&s=1\ 14&.sig=ur1Tv66FPjPyv-uCBKRtWg>
>
> Process piping
>

<http://groups.yahoo.com/gads?t=ms&k=Process+piping&w1=Mechanical+engineering&w2\ =Mechanical+engineering+jobs&w3=Cad+drafter&w4=Process+piping&w5=Mechanical&c=5&\ s=114&.sig=FzWvo5YxfZDmFBVlwyPf1w>
> Mechanical
>

<http://groups.yahoo.com/gads?t=ms&k=Mechanical&w1=Mechanical+engineering&w2=Mec\ hanical+engineering+jobs&w3=Cad+drafter&w4=Process+piping&w5=Mechanical&c=5&s=11\ 4&.sig=68oR4NLxc8ihQjBusA_H3Q>
>
>
>
> ------------------------------------------------------------------------
> YAHOO! GROUPS LINKS
>
> * Visit your group "PipingDesign
> <http://groups.yahoo.com/group/PipingDesign>" on the web.
>
> * To unsubscribe from this group, send an email to:
> PipingDesign-unsubscribe@yahoogroups.com
> <mailto:PipingDesign-unsubscribe@yahoogroups.com?subject=Unsubscribe>
>
> * Your use of Yahoo! Groups is subject to the Yahoo! Terms of
> Service <http://docs.yahoo.com/info/terms/>.
>
>
> ------------------------------------------------------------------------
>

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] Received on Sat Feb 25 12:26:00 2006