Engineer’s Notebook

Meeting compression train base package design requirements for service on floating production, storage and offloading vessels

Editor’s Note: Reproduced with permission of the Turbomachinery Laboratory from Proceedings of the Asia Turbomachinery and Pump Symposium, Singapore, February 22 – 25, 2016 (http://atps.tamu.edu/proceedings). ABSTRACT Typical floating production, storage and offloading (FPSO) compression applications are presented, including drivers and auxiliary equipment, and typical compressor operating conditions. Base packages consisting of centrifugal compressor(s), gear, motor […]

VSDS Motor Inverter Design Concept for Compressor Trains Avoiding Interharmonics in Operating Speed Range and Verification

During operation of compressor trains by a variable speed drive system (VSDS), integer and non-integer harmonic currents are generated in the inverter. Via the electrical system of the inverter and the motor, an excitation torque is transferred across the motor air gap into the main mass of the motor rotor. The frequency of this excitation […]

Stability Testing of CO2 Compressors

Note: Reproduced with permission of the Turbomachinery Laboratory (http://turbolab.tamu.edu). From Proceedings of the Forty-Third Turbomachinery Symposium, Turbomachinery Laboratory, Texas A&M University, College Station, Texas, Copyright 2014. This paper presents results from stability analysis and testing on high- pressure CO2 centrifugal compressors, beginning with a preliminary analysis conducted at an academic institution. It includes results of stability tests […]

Meeting Base Package Design Requirements for Service on Floating Production, Storage, and Offloading Vessels

Typical floating production, storage and offloading (FPSO) compression applications are presented, including drivers and auxiliary equipment, and typical compressor operating conditions. Base packages consisting of centrifugal compressor(s), gear, motor or gas turbine driver, lube oil tank, and auxiliary equipment require extensive analyses to validate design requirements for service on FPSO vessels. Finite element analyses (FEA) are performed to insure that stress […]

Stepless Capacity Control Systems for Reciprocating Compressors

This paper was presented at 9º Fórum de Turbomáquinas Petrobras. Steve ChaykoskyManager, Valve Engineering Joel SanfordSr. Project Engineer SUMMARY This paper introduces two stepless capacity control systems for reciprocating compressors: Dresser-Rand’s Infinite Step Control (ISC) system and Hydraulic Variable Volume Clearance Pocket (HVVCP). Case studies describe the relative advantages of each unloader system and how […]

Stationary Component Optimization and The Resultant Improvement in The Performance Characteristics of a Radial Compressor Stage

Published by ASME and presented at the ASME Turbo Expo in 2013. © 2013 ASME. Syed Fakhri Aero /Thermo Design Engineer Clementine VezierAero /Thermo Design Engineer James M. Sorokes Principal Engineer, ASME Fellow Jorge E. Pacheco, Ph.D.Manager, Aero / Thermo Design Engineering ABSTRACT This paper is a follow-up to work published by Sorokes et al. [16] regarding […]

CO2 Compression for Capture and Injection in Today’s Environmental World

From insights Spring 2011. Reprinted (with modifications)  with permission of the Turbomachinery Laboratory (http://turbolab.tamu.edu). From Proceedings of the First Middle East Turbomachinery Symposium, February 13-16, 2011, Doha, Qatar, Copyright 2011. ABSTRACT Carbon dioxide (CO2) has numerous industrial and commercial uses, such as for enhanced oil recovery (EOR) in mature producing oil fields. One of the […]