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Now showing items 11-20 of 23
Design and Testing of a High-Pressure-Ratio Centrifugal Stage – Probing the Aerodynamic & Mechanical Limits
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
The paper describes the design, manufacture and testing of a novel high-pressure-ratio, single-stage centrifugal compressor targeted
for use in high molecular weight applications. The stage was designed to deliver a minimum ...
Superimposing Planetary Gears as Variable Speed Drives for Rotating Equipment
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
There are many high-power and high-speed pumps installed in power plants, oil & gas applications and in petrochemical industry
consuming a considerable amount of energy. Significant interest exists within operators to ...
Using Digital Models for Condition Based Maintenance of High Pressure Pumps in SWRO Desalination Plants
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
Condition based maintenance (CBM) is a very
useful technique built around the concept of
monitoring the operation of assets. This allows
performing diagnostics, troubleshooting and
determining the proper maintenance ...
Influence of Inter-Coolers Technologies on yhe Performance of Isotherm Centrifugal Compressors
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
It is well known that gas compressor work can be greatly
reduced by inter-stage cooling. Since decades, isotherm
compressors are commonly used where very large volume of
gases is needed and low power consumption is ...
Modification of Oil Brake on Cryogenic Expander for Improved Efficiency Under Varying Load Conditions
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
Investigation into the operation of a 200kW brake oil expander in a 1970’s
vintage ethane cracker revealed that maximum gas throughput was
significantly below design and that the gas throughput varied significantly in
normal ...
On The Leakage and Rotordynamic Force Coefficients of Pump Annular Seals Operating with Air/Oil Mixtures: Measurements and Predictions
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
In the subsea oil and gas industry, multiphase pumps and wet gas compressors add pressure to the process fluid thus enabling long
distance tie back system that eliminates topside facilities such as an oil and gas separation ...
Atypical Results from Improperly Sized & Charged Pulsation Dampeners
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
At a facility with four quintuplex pumps, pulsation dampeners were being used to control pulsations in the discharge line. However, the initial dampeners were both undersized and undercharged for the application. As a ...
A Study on the Operation of Pitot Tube Pumps
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
While pitot tube pumps have been commercially available since 1970 little is known and less is published about their internal
operation and design principles especially when operating off design. This paper is a culmination ...
Subsynchronous Shaft Vibration in an Integrally Geared Expander-Compressor due to Vortex Flow in an Expander
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
Subsynchronous shaft vibration was observed in an integrally
geared expander-compressor when the machine was operated
with a partial load in the course of plant start up. The root
cause of the synchronous shaft vibration ...
Static and Rotordynamic Analysis of a Plain Annular (Liquid) Seal in the Laminar Regime with a Swirl Brake for Three Clearances
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
Annular seals are non-contacting mechanical elements designed to reduce leakage between two areas of differing pressures such as between two impeller stages in a pump. Circumferential fluid rotation inside the annular ...