Performance aspects of podded propulsor in dynamic operating conditions

2016 ◽  
Vol 62 (3-4) ◽  
pp. 139-160
Author(s):  
M. Islam ◽  
A. Akinturk ◽  
B. Veitch
Keyword(s):  
Operating Conditions ◽  
Podded Propulsor ◽  
Dynamic Operating

scholarly journals Energy analysis and surrogate modeling for the green methanol production under dynamic operating conditions

Fuel ◽  
2022 ◽  
Vol 307 ◽  
pp. 121924
Author(s):  
Xiaoti Cui ◽  
Søren Knudsen Kær ◽  
Mads Pagh Nielsen
Keyword(s):  
Energy Analysis ◽  
Surrogate Modeling ◽  
Operating Conditions ◽  
Methanol Production ◽  
Dynamic Operating

scholarly journals Binary Amplitude Reflection Gratings for X-ray Shearing and Hartmann Wavefront Sensors

Sensors ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 536
Author(s):  
Kenneth A. Goldberg ◽  
Antoine Wojdyla ◽  
Diane Bryant
Keyword(s):  
Operating Conditions ◽  
Design Parameters ◽  
Wavefront Aberration ◽  
Light Sources ◽  
Wavefront Sensors ◽  
X Ray ◽  
New Class ◽  
Coherent Wave ◽  
Reflection Gratings ◽  
Dynamic Operating

New, high-coherent-flux X-ray beamlines at synchrotron and free-electron laser light sources rely on wavefront sensors to achieve and maintain optimal alignment under dynamic operating conditions. This includes feedback to adaptive X-ray optics. We describe the design and modeling of a new class of binary-amplitude reflective gratings for shearing interferometry and Hartmann wavefront sensing. Compact arrays of deeply etched gratings illuminated at glancing incidence can withstand higher power densities than transmission membranes and can be designed to operate across a broad range of photon energies with a fixed grating-to-detector distance. Coherent wave-propagation is used to study the energy bandwidth of individual elements in an array and to set the design parameters. We observe that shearing operates well over a ±10% bandwidth, while Hartmann can be extended to ±30% or more, in our configuration. We apply this methodology to the design of a wavefront sensor for a soft X-ray beamline operating from 230 eV to 1400 eV and model shearing and Hartmann tests in the presence of varying wavefront aberration types and magnitudes.

Remaining Useful Life Estimation for PEMFC in Dynamic Operating Conditions

2016 ◽  
Author(s):  
Zhongliang Li ◽  
Samir Jemei ◽  
Rafael Gouriveau ◽  
Daniel Hissel ◽  
Noureddine Zerhouni
Keyword(s):  
Remaining Useful Life ◽  
Operating Conditions ◽  
Life Estimation ◽  
Dynamic Operating ◽  
Useful Life

Development of a Structured Reactor System for CO 2 Methanation under Dynamic Operating Conditions

2019 ◽  
Vol 7 (6) ◽  
pp. 1900047 ◽  
Author(s):  
Thomas Stiegler ◽  
Katharina Meltzer ◽  
Alexander Tremel ◽  
Manfred Baldauf ◽  
Peter Wasserscheid ◽  
...  
Keyword(s):  
Operating Conditions ◽  
Reactor System ◽  
Structured Reactor ◽  
Dynamic Operating

Hybrid state of charge estimation for lithium-ion battery under dynamic operating conditions

2019 ◽  
Vol 110 ◽  
pp. 48-61 ◽  
Author(s):  
Datong Liu ◽  
Lyu Li ◽  
Yuchen Song ◽  
Lifeng Wu ◽  
Yu Peng
Keyword(s):  
Lithium Ion Battery ◽  
Lithium Ion ◽  
Operating Conditions ◽  
State Of Charge ◽  
Hybrid State ◽  
Dynamic Operating ◽  
State Of Charge Estimation

scholarly journals Dynamic Emulation of a PEM Electrolyzer by Time Constant Based Exponential Model

Energies ◽  
2019 ◽  
Vol 12 (4) ◽  
pp. 750 ◽  
Author(s):  
Damien Guilbert ◽  
Gianpaolo Vitale
Keyword(s):  
Dynamic Behavior ◽  
Proton Exchange Membrane ◽  
Exponential Model ◽  
Proton Exchange ◽  
Operating Conditions ◽  
Experimental Investigations ◽  
Model Parameters ◽  
Dynamic Operating ◽  
Pem Electrolyzer ◽  
Current Interval

The main objective of this paper is to develop a dynamic emulator of a proton exchange membrane (PEM) electrolyzer (EL) through an equivalent electrical model. Experimental investigations have highlighted the capacitive effect of EL when subjecting to dynamic current profiles, which so far has not been reported in the literature. Thanks to a thorough experimental study, the electrical domain of a PEM EL composed of 3 cells has been modeled under dynamic operating conditions. The dynamic emulator is based on an equivalent electrical scheme that takes into consideration the dynamic behavior of the EL in cases of sudden variation in the supply current. The model parameters were identified for a suitable current interval to consider them as constant and then tested with experimental data. The obtained results through the developed dynamic emulator have demonstrated its ability to accurately replicate the dynamic behavior of a PEM EL.

A method to study the intake consistency of the dual-stack polymer electrolyte membrane fuel cell system under dynamic operating conditions

2018 ◽  
Vol 231 ◽  
pp. 1050-1058 ◽  
Author(s):  
Huicui Chen ◽  
Yuxiang He ◽  
Xinfeng Zhang ◽  
Xin Zhao ◽  
Tong Zhang ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Membrane ◽  
Cell System ◽  
Operating Conditions ◽  
Fuel Cell System ◽  
Electrolyte Membrane ◽  
Dynamic Operating ◽  
Dual Stack
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