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Now showing items 171-180 of 220
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 ...
Mechanical Seal Failure in the Oil Flooded Compressor
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
We consistently experienced mechanical seal failure of the oil–flooded screw compressor in the refrigeration system. The first seal failure happened on July, 2015, which is a year passed since start-up. This seal failure ...
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 ...
Design and Implementation of Swirl Brakes for Enhanced Rotordynamic Stability in an Off-shore Centrifugal Compressor
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
Rotordynamic stability of gas compressors at high speeds and operating pressures is a significant technical challenge.
Dynamic instability must be avoided for the sake of safe, reliable and continuous operation of ...
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 ...
TANDEM DRY GAS SEALS – Design and Maintenance Considerations for Enhanced Reliability and Performance
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
Dry Gas Seals have been in existence in the process centrifugal compressor industry for the last three decades and majority of the compressor units in operation today are installed with Dry Gas Seals. DGS sealing and the ...
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 ...