Effects of momentum ratio and velocity difference on combustion performance in lignite-fired pulverized boiler

Energy ◽  
2018 ◽  
Vol 165 ◽  
pp. 825-839 ◽  
Author(s):  
Zixiang Li ◽  
Zhengqing Miao ◽  
Xusheng Shen ◽  
Jiangtao Li
Keyword(s):  
Velocity Difference ◽  
Momentum Ratio ◽  
Combustion Performance

Spectroscopic Observations of Visual Double Stars

1965 ◽  
Vol 5 ◽  
pp. 109-111
Author(s):  
Frederick R. West
Keyword(s):  
Radial Velocity ◽  
High Dispersion ◽  
Velocity Difference ◽  
Spectrograph Slit ◽  
Spectroscopic Observations ◽  
Double Stars ◽  
Visual Double Stars ◽  
Relative Orbit ◽  
Two Component ◽  
Star Images

There are certain visual double stars which, when close to a node of their relative orbit, should have enough radial velocity difference (10-20 km/s) that the spectra of the two component stars will appear resolved on high-dispersion spectrograms (5 Å/mm or less) obtainable by use of modern coudé and solar spectrographs on bright stars. Both star images are then recorded simultaneously on the spectrograph slit, so that two stellar components will appear on each spectrogram.

Liquid Jet Fuel Property Impacts on Combustion Performance

2021 ◽  
Author(s):  
Stephen P. Lucas ◽  
Radi A. Alsulami ◽  
Bret C. Windom
Keyword(s):  
Jet Fuel ◽  
Liquid Jet ◽  
Fuel Property ◽  
Combustion Performance

scholarly journals Injection-rolling nozzle in an imprint system with continuous injection direct rolling for ultra-thin microstructure guide light plate

2021 ◽  
Vol 13 (4) ◽  
pp. 168781402110112
Author(s):  
Yan Lou ◽  
Kewei Chen ◽  
Xiangwei Zhou ◽  
Yanfeng Feng
Keyword(s):  
Flow Velocity ◽  
Superior Performance ◽  
Light Transmittance ◽  
Velocity Difference ◽  
Orthogonal Experiments ◽  
Width Direction ◽  
Direct Rolling ◽  
Simulation Results ◽  
Continuous Injection ◽  
Better Than

A novel Injection-rolling Nozzle (IRN) in an imprint system with continuous injection direct rolling (CIDR) for ultra-thin microstructure polymer guide light plates was developed to achieve uniform flow velocity and temperature at the width direction of the cavity exit. A novel IRN cavity was designed. There are eight of feature parameters of cavity were optimized by orthogonal experiments and numerical simulation. Results show that the flow velocity at the width direction of the IRN outlet can reach uniformity, which is far better than that of traditional cavity. The smallest flow velocity difference and temperature difference was 0.6 mm/s and 0.24 K, respectively. The superior performance of the IRN was verified through a CIDR experiment. Several 0.35-mm thick, 340-mm wide, and 10-m long microstructural Polymethyl Methacrylate (PMMA) guide light plates were manufactured. The average filling rates of the microgrooves with the aspect ratio 1:3 reached above 93%. The average light transmittance is 88%.

Functional group characteristics and pyrolysis/combustion performance of fly ashes from Karamay oily sludge based on FT-IR and TG-DTG analyses

Fuel ◽  
2021 ◽  
Vol 296 ◽  
pp. 120669
Author(s):  
Wenlong Mo ◽  
Zifan Wu ◽  
Xiaoqiang He ◽  
Wenjie Qiang ◽  
Bo Wei ◽  
...  
Keyword(s):  
Functional Group ◽  
Oily Sludge ◽  
Fly Ashes ◽  
Combustion Performance ◽  
Ft Ir ◽  
Group Characteristics
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