×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

NH3 Systems

NH3 Systems

NH3 Systems

(OP)
Hello there,

I am facing to NH3 Systems
I made a lot of research in internet, in the past threads, but I was not able to find an extremely basic issue: I cannot find any reference concerning the systems utilizing NH3.
Are they utilizing a TXV Valve or are they flooded ?

Could anyone kindly suggest me some literature reference to look into ?

Many thanks  

RE: NH3 Systems

are you looking for information on an NH3 boiling fluid chiller?  If so, they work just like any freon or propane chiller.

Or are you looking at NH3 absorption chilllers?

RE: NH3 Systems

(OP)
Hello, thanks for your answer.
I am looking for NH3 boiling chiller.
At the moment absorption is far !

What I'd like to understand is:
if they work as a freon chiller, they can work either in direct expansion - NH3 enters in the evaporator in a mixture gas-liquid and exits superheated - or in a flooded mode -NH3 enters as liquid and then exits at a certain title but not superheated - can't they ?

Many thanks

RE: NH3 Systems

Yes, that's a standard refrigeration cycle, After expansion or throttling it enters the evaporator where it is heated (boiled) by the cooling load and leaves as superheated gas.
It then enters the compressor and then the condenser to complete the cycle.
Look up refrigeration cycle to get more information.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources