Feb
13
In January I posted a series of four (4) blogs that addressed the implement of an on-line compressor efficiency calculation. The example for this series was a compressor for a refrigeration system that used R134a refrigerant. If you have a similar compressor application in your plant then the information provided in these blogs may act …
Jan
30
Part 1 of the centrifugal compressor efficiency series addressed the measurements and parameters that must be calculated to determine compressor efficiency. In Part 2-3 of this series we examined one way of calculating the enthalpy and entropy of the gas stream at the compressor suction and discharge and isentropic enthalpy for the refrigerant R134a. Once …
Jan
23
Part 1 of the centrifugal compressor efficiency series addressed the measurements and parameters that are used to calculate compressor efficiency. In Part 2 of this series we examine how these measurements are used to calculate the enthalpy of the gas stream at the compressor suction and discharged for the refrigerant R134a. This calculation utilized bilinear …
Jan
09
Centrifugal compressors play an important role within the process industry. In some cases compressor capacity may determine the throughput of a plant. If a compressor is used for refrigeration then any variation in compressor operation may directly impact the temperature control in key unit operations such as flash vessels and exothermic reactors. Also, the compressor …
Nov
21
At Emerson Exchange, 2011, I had the pleasure of working with Jay Colclazier, Senior Automation Engineer, CHS Refinery, and Joanne Salazar, Global Marketing Communications Manager, Emerson Process Management, to host a workshop that addresses Online Tools for DeltaV Systems Users. This workshop provides an overview of online tools that Emerson provides to help users collaborate …
Nov
14
At Emerson Exchange, 2011, I had the pleasure of working with Daniel Coyne, Manager, Automation, BP America Inc., to host a workshop on Recovery from a Process Saturation Condition. The workshop addresses the improved recovery from a process saturation condition that is provided by the PIDPlus option of the PID function block in the DeltaV …
Oct
17
This year Emerson Exchange will be held October 24-28 at the Gaylord Opryland Resort & Convention Center in Nashville, Tennessee. Emerson Exchange is a forum for the free exchange of non-proprietary information among the global user community of all Emerson Process Management’s products and services. The technical sessions in this conference cover a wide range of industry …
