×
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

CPA Cubic Plus Association Liquid-Liquid phase equilibria

CPA Cubic Plus Association Liquid-Liquid phase equilibria

CPA Cubic Plus Association Liquid-Liquid phase equilibria

(OP)
does Prode Properties require the same BIPs for vapor-liquid and liquid-liquid phase equilibria with CPA Cubic Plus Association ?

RE: CPA Cubic Plus Association Liquid-Liquid phase equilibria

CPA works as other EOS models in Prode (Peng-Robinson, Soave-Redlich-Kwong etc.),
Prode Properties allows to define one BIPs data set per each model (you can define different models for fugacity, enthalpy etc.) and stream,
for a vapor-liquid phase equilibria or a vapor-liquid-liquid phase equilibria normally one gets BIPs from VLE database (which includes a large number of BIPs, I think about 30000 or more),
for liquid-liquid phase equilibria or solid-liquid phase equilibria or hydrates there are specific databases (there are four databases, VLE, LLE, SLE, Hydrates)

to obtain accurate results with liquid-liquid (or solid-liquid or solid-vapor) phase equilibria I calculate the BIPs with the data regression procedure included in Prode, there are examples in the operating manual
http://www.prode.com/docs/pppman.pdf

RE: CPA Cubic Plus Association Liquid-Liquid phase equilibria

(OP)
actually I load BIPs for CPA from VLE database in Prode,
however, calculated liquid-liquid fractions are different from our reference while vapor-liquid is Ok,
what can I do for calculating the correct vapor-liquid and liquid-liquid fractions ?

RE: CPA Cubic Plus Association Liquid-Liquid phase equilibria

(OP)
Ok

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

White Paper: Industrial Control Basics: Contactors
A contactor is an electrical device used for switching an electrical circuit on or off. Considered to be a special type of relay, contactors are used in applications with higher current carrying capacity, while relays are used for lower current applications. Download Now
Research Report: State of IoT Adoption in Product Development 2019
This research report, based on a survey of 234 product development professionals, examines the current state of Internet of Things (IoT) adoption by product design teams, its perceived importance, and what features and capabilities teams consider important when making decision about adding IoT functionality to their products. Download Now
Research Report: Augmented Reality for Maintenance, Repair and Overhaul (MRO)
The term Industry 4.0 denotes a cluster of technologies that’s poised to fundamentally reshape manufacturing and bring about a new industrial revolution. These include 3D printing (AM), the Industrial Internet of Things (IIoT), artificial intelligence (AI) and mixed reality technologies, more commonly known as virtual reality (VR) and augmented reality (AR). Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close