Hi,
I have a question regarding compressor motor.
I have been working on a dynamic simulation for compressor surge with Hysys as required for my project specification.
I am currently working with electric motor compressor, and struggling with ESD trip case.
The suction flow is about 1200m3/hr and speed and power are 10,000 rpm and 1000 kw accordingly.
With given inertia, my compressor speed reaches to 300 rpm from the initial speed of 10000 rpm in 1 minute
when I set the compressor power to be ramped down to zero in 0.1s.
I would like to ask if this is realistic that the compressor speed (probably impeller) will decrease to 300 rpm from 10.000 rpm in one minute even though this time is Hysys time.
Addition to this, I asked one of my fiends who is working at a compressor manufacturer, and he said that the speed will decrease to zero in 2-3 minutes.
So, I also would like to ask if the speed of impeller decreases linearly or decreases with some arc graph.
Thank You