×
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

Calculating Superheat

Calculating Superheat

Calculating Superheat

(OP)
I am replacing the control system on an industrial ammonia refrigeration system.  The old system displayed a "superheat" value in degrees K.  I don't have access to the code that calculated this superheat value.  I have looked at the T/P charts, but I am still not sure what to calculate for displaying this value.  Any suggestions greatly appreciated!!  RB

RE: Calculating Superheat

You will need a pressure sensor and a temperature sensor at the same point.

From the pressure reading look up the corresponding saturated temperature from your pressure vs. temperature chart.

Actual temperature - saturated temperature = superheat.

RE: Calculating Superheat

(OP)
Thanks MintJulep...I have pressure and temperature sensors at the suction and discharge.  Which pair should I use?  Thanks again!!  RB

RE: Calculating Superheat

I'd guess suction, but that's really going to depend on what the value is being used for.

RE: Calculating Superheat

(OP)
Thanks again!!

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