Has it been +two weeks already? In our last post - TMC PID basics - we reviewed some basic controls vocabulary associated with "PID control," and then summarized the PID forms (Parallel, [...]Read More
It's not an overstatement to say that there has been "a lot" of literature written about industrial process control and the venerable PID control algorithm. However, if there's been a lot written [...]Read More
We've been getting a lot of surge detection questions lately - what follows are the eleven most frequent, surge-detection-related questions we've been asked.Read More
In our last post, Refrigeration Systems - Quench Control (Part 1), we discussed the industrial refrigeration process, and basic recycle temperature control. In what follows, we will discuss the [...]Read More
This will be the first of two posts discussing:
Quench Control in hydrocarbon processing refrigeration systems.
In the hydrocarbon processing industry, refrigeration systems are widely used to [...]Read More
In this post we will describe how we can convert a compressor manufacturer's compressor performance map to a surge line we can use to determine where, in relation to that surge line, a compressor is [...]Read More
Proper selection of the recycle valves for a refrigeration compressor can be significantly more complicated than the selection valves for most other anti-surge applications. Refrigeration Compressors [...]Read More
Properly designed compressor controls should not only protect the compressor, they should protect the process.
Centrifugal compressors are common-place in many process plants due to their small [...]Read More
Stonewall occurs in a centrifugal compressor when the velocity of the gas in at least one stage reaches the speed of sound (Mach 1) at the gas conditions in that part of the [...]Read More