Results 81 to 90 of about 26,146 (270)

Stress analysis and fatigue life prediction of a wobble-plate [PDF]

, 2006
A five-stage compressor for compressing natural gas is being designed and evaluated. The compressor operates at 1500 rpm with natural gas pressure of 50 psi.
Osman Ali, Hassan
core  

Growth dynamics, skeletochronology, and histovariability of the theropod dinosaur Berthasaura leopoldinae

The Anatomical Record, EarlyView.
Osteohistological sampling on different bones of theropod dinosaur documents discrepant age record, growth, and metabolism. This could result unprecise paleobiological inferences if samplings are based on single bones. However, multi‐bone sampling can attenuate these discrepancies, helping to infer growth dynamics and physiology of these extinct ...
Geovane Alves de Souza, Marina Bento Soares, Luiz Carlos Weinschütz, Alexander Wilhelm Armin Kellner   +3 more
wiley   +1 more source

Active magnetic bearings applied to industrial compressors [PDF]

The design and shop test results are given for a high-speed eight-stage centrifugal compressor supported by active magnetic bearings. A brief summary of the basic operation of active magnetic bearings and the required rotor dynamics analysis are ...
Hustak, J. F., Kirk, R. G., Schoeneck, K. A.   +2 more
core   +1 more source

Enzymatic synthesis of acylglycerides from agroindustrial residues: process design and simplified techno‐economic assessment

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract This study developed an enzymatic process to add value to palm oil fatty acid distillate (PFAD) and glycerol, resulting in the production of monoacylglycerides (MAG) and diacylglycerides (DAG). The biocatalyst loading (Novozym 435) and molar ratio of reagents were evaluated to obtain a suitable reaction condition in terms of space–time yield ...
Ronaldo Rodrigues de Sousa, Isabelle de Souza Barbosa, Ana Cristina de Araújo Collaço, Denise Maria Guimarães Freire, Viridiana Santana Ferreira‐Leitão   +4 more
wiley   +1 more source

Multi-objective optimization of aerodynamic performance and internal flow in centrifugal compressor based on neural networks and genetic algorithms

AIP Advances
In the present work, an optimization method coupled with computational fluid dynamics (CFD), backpropagation (BP) neural networks, and genetic algorithms (GA) is proposed to suppress internal flow and improve the performance of centrifugal compressor ...
Yunong Li, Jianfeng Xu, Fengyu Li, Zhengdao Wang, Hui Yang, Wei Zhang, Yikun Wei   +6 more
doaj   +1 more source

Obtaining gas dynamic characteristics of the circulation centrifugal compressor of hydrogen-containing gas based on the analysis of actual operating modes [PDF]

Омский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение"
The analysis of actual operating modes of a centrifugal compressor providing circulation of hydrogencontaining gas in a reactor block of catalytic isomerization of metaxylene and ethylbenzene into orthoxylenes and paraxylenes has been performed.
A. D. Vanyashov, D. V. Bychkov, A. V. Belikov   +2 more
doaj   +1 more source

The effect of prewhirl on the internal aerodynamics and performance of a mixed flow research centrifugal compressor [PDF]

The internal three-dimensional steady and time-varying flow through the diffusing elements of a centrifugal impeller were investigated using a moderate scale, subsonic, mixed flow research compressor facility.
Bryan, William B., Fleeter, Sanford
core   +1 more source

Low-temperature centrifugal helium compressors.

TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan), 1982
Centrifugal helium compressors were developed to improve efficiency and reliability of helium refrigerators. These comprssors are operated almost below the temperature of liquid nitrogen. The rotor of the compressor is supported by helium lubricated gas bearings.
M. Okano, M. Kawada, S. Togo, N. Saji
openaire   +2 more sources

Defect engineering for highly efficient and stable perovskite top cells for Si tandems

Bulletin of the Korean Chemical Society, EarlyView.
Defect passivation in wide‐bandgap perovskites is essential for enabling high‐efficiency and stable perovskite/Si tandem solar cells. Bulk, surface, and buried‐interface passivation strategies focus on suppressing nonradiative recombination, ion migration, and halide segregation, thereby clarifying critical design principles for next‐generation tandem ...
Ju Yeong Hong, Young Seon Yoon, Jin Young Kim   +2 more
wiley   +1 more source

A Multi-Point Preliminary Design Method for Centrifugal Compressor Stages of Fuel Cell-Based Propulsion Systems

International Journal of Turbomachinery, Propulsion and Power
The successful implementation of an airborne propulsion system based on hydrogen-powered fuel cell technology highly depends on the development of an efficient, lightweight and compact air supply compressor.
Alessandro Cappiello, Viviane Ciais, Matteo Pini   +2 more
doaj   +1 more source