Analytical optimization study of potential power output from a small continuous wave chemical laser

1972 ◽  
Author(s):  
J. THOENES ◽  
A. RATLIFF
Keyword(s):  
Power Output ◽  
Continuous Wave ◽  
Chemical Laser ◽  
Optimization Study

Performance Comparison and Parametric Analysis of sCO2 Power Cycles Configurations

2018 ◽  
Author(s):  
Ali S. Alsagri ◽  
Andrew Chiasson ◽  
Ahmad Aljabr
Keyword(s):  
Power Output ◽  
Thermal Efficiency ◽  
Performance Comparison ◽  
Specific Power ◽  
Brayton Cycle ◽  
Computationally Efficient ◽  
Power Cycles ◽  
Optimization Study ◽  
Specific Power Output ◽  
Improve Calculation

A thermodynamic analysis and optimization of four supercritical CO2 Brayton cycles were conducted in this study in order to improve calculation accuracy; the feasibility of the cycles; and compare the cycles’ design points. In particular, the overall thermal efficiency and the power output are the main targets in the optimization study. With respect to improving the accuracy of the analytical model, a computationally efficient technique using constant conductance (UA) to represent heat exchanger performances is executed. Four Brayton cycles involved in this compression analysis, simple recaptured, recompression, pre-compression, and split expansion. The four cycle configurations were thermodynamically modeled and optimized based on a genetic algorithm (GA) using an Engineering Equation Solver (EES) software. Results show that at any operating condition under 600 °C inlet turbine temperature, the recompression sCO2 Brayton cycle achieves the highest thermal efficiency. Also, the findings show that the simple recuperated cycle has the highest specific power output in spite of its simplicity.

Measurement of upstream and downstream spectra of continuous-wave DF chemical laser spot

2013 ◽  
Vol 25 (3) ◽  
pp. 544-548
Author(s):  
邹前进 Zou Qianjin ◽  
陈前荣 Chen Qianrong ◽  
张宇函 Zhang Yuhan ◽  
袁春 Yuan Chun ◽  
袁圣付 Yuan Shengfu
Keyword(s):  
Continuous Wave ◽  
Laser Spot ◽  
Chemical Laser

HBr–CO2 Continuous‐Wave Chemical Laser

1970 ◽  
Vol 52 (6) ◽  
pp. 3304-3305 ◽  
Author(s):  
Terrill A. Cool ◽  
Ronald R. Stephens
Keyword(s):  
Continuous Wave ◽  
Chemical Laser

Continuous‐Wave Overtone Bands in a CS2–O2 Chemical Laser

1972 ◽  
Vol 43 (6) ◽  
pp. 2906-2907 ◽  
Author(s):  
F. G. Sadie ◽  
P. A. Büger ◽  
O. G. Malan
Keyword(s):  
Continuous Wave ◽  
Chemical Laser

A continuous-wave DF chemical laser on an ethylene-based fuel composition

2003 ◽  
Vol 33 (12) ◽  
pp. 1038-1042
Author(s):  
Igor' A Fedorov ◽  
S V Konkin ◽  
Mikhail A Rotinyan ◽  
Nikolai E Tret'yakov ◽  
Alla L Etsina
Keyword(s):  
Continuous Wave ◽  
Fuel Composition ◽  
Chemical Laser

A Duct Optimization Study for a Vertical Axis Hydro-current Turbine Model

2011 ◽  
Vol 134 (2) ◽  
Author(s):  
M. Alidadi ◽  
V. Klaptocz ◽  
G. W. Rawlings ◽  
Y. Nabavi ◽  
S. Calisal
Keyword(s):  
Power Output ◽  
Numerical Optimization ◽  
Vertical Axis ◽  
Experimental Results ◽  
Maximum Power Output ◽  
Numerical Predictions ◽  
Optimization Study ◽  
Current Turbine ◽  
Turbine Model ◽  
Good Agreement

A numerical optimization study is used to design a duct for a model of vertical axis hydro-current turbine. The effects of this duct on the power output and torque fluctuations of the turbine model are then examined numerically and experimentally. Relatively good agreement was obtained between the experimental results and numerical predictions especially at higher tip speed ratios. Experimental results show an 85% increase in the maximum power output when the turbine is placed inside the duct. The numerical and experimental torque curves for the turbine also show substantial reductions in the torque fluctuations as a result of ducting.

Continuous Wave Carbon Monoxide Chemical Laser

1971 ◽  
Vol 55 (12) ◽  
pp. 5523-5532 ◽  
Author(s):  
Curt Wittig ◽  
J. C. Hassler ◽  
P. D. Coleman
Keyword(s):  
Carbon Monoxide ◽  
Continuous Wave ◽  
Chemical Laser
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