1 reply to this topic

[tomr91]

Hello everyone,

 

I want to simulate a simple example of insert water from two different streams into tank, such as the first stream insert the water and at some time point, the first stream valve closed and the second stream open.

 

Can someone help me to define it in HYSYS?

[Dacs]

Sketch as attached.

 

For boundary conditions (dynamic specifications):

1. Stream 1 - Pressure (whatever pressure you like)

2. Streams 8 and 10 - Flow (zero so no outflow)

3. Streams 7 and 9 - Pressure (atmospheric maybe, so zero)

 

Then you need to define the valve characteristics of VLV-100, 101 and 102.

 

Then you need to define V-100 and 101 details, such as diameter/length/initial liquid level, etc.

 

Then use event scheduler to set the sequence of valve opening like:

1. All valves are closed prior simulation run

2. When simulation is run, VLV-100 to initially open

3. Then after some time, you open VLV-101

4. Either you set a set time for VLV-101 to open or add a condition in the event scheduler to close VLV-101 when V-100 is full, then you open VLV-102.

5. Close VLV-102 after a set amount of time or when V-101 is full.

 

This is not exhaustive, but above should nudge you in the right direction.

Attached Files

•  sketch.jpg   27.1KB   4 downloads