Geometric parameter optimization of ejector-expansion refrigeration cycle with natural refrigerants

2009 ◽  
Vol 34 (1) ◽  
pp. 84-94 ◽  
Author(s):  
Jahar Sarkar
Keyword(s):  
Geometric Parameter ◽  
Parameter Optimization ◽  
Refrigeration Cycle

Geometric parameter optimization to minimize the light-reflection losses of regular vertical silicon nanorod arrays used for solar cells

2014 ◽  
Vol 211 (11) ◽  
pp. 2527-2531 ◽  
Author(s):  
Zhiqiang Duan ◽  
Meicheng Li ◽  
Trevor Mwenya ◽  
Fan Bai ◽  
Yingfeng Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Geometric Parameter ◽  
Parameter Optimization ◽  
Light Reflection ◽  
Nanorod Arrays

scholarly journals Design of Multilayer Ring Emitter Based on Metamaterial for Thermophotovoltaic Applications

Energies ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 2299 ◽  
Author(s):  
Fekadu Maremi ◽  
Namkyu Lee ◽  
Geehong Choi ◽  
Taehwan Kim ◽  
Hyung Cho
Keyword(s):  
Numerical Simulation ◽  
Band Gap ◽  
Geometric Parameter ◽  
Parameter Optimization ◽  
Spectral Efficiency ◽  
Wide Angle ◽  
Broadband Emission ◽  
Simulation Results

The objective of this study is to design a broadband and wide-angle emitter based on metamaterials with a cut-off wavelength of 2.1 µm to improve the spectral efficiency of thermophotovoltaic emitters. To obtain broadband emission, we conducted the geometric parameter optimization of the number of stacked layers, the inner and outer radii of the nano-rings, and the thickness of the nano-rings. The numerical simulation results showed that the proposed emitter had an average emissivity of 0.97 within the targeted wavelength, which ranged from 0.2 µm to 2.1 µm. In addition, the presented multilayer nano-ring emitter obtained 79.6% spectral efficiency with an InGaAs band gap of 0.6 eV at 1400 K.

Mechanical Structure Design of the Full-Automatic Coil Strapping Machine

2014 ◽  
Vol 494-495 ◽  
pp. 416-419 ◽  
Author(s):  
Yuan Zheng ◽  
Bing Xu ◽  
Fu Li Liu ◽  
Cheng Peng Jiang ◽  
Han Bing Wang
Keyword(s):  
Geometric Parameter ◽  
Parameter Optimization ◽  
Development Process ◽  
Structure Design ◽  
Switching Circuit ◽  
Pressing Force ◽  
Mechanical Structure ◽  
Steel Strips ◽  
The Right ◽  
Voltage Switching

To develop a kind of automatic coil strapping machine is the object of this paper, which described the entire development process of the machine. This paper discussed some technical difficulties of the design, and presented the solution of the problems based on the existing technical conditions. For example, we solved the problem that how to pinpoint the right position for the different sizes of coils based on the geometric parameter optimization for swinging mechanism; and we solved the problem that the excessive pressing force of the friction wheel causes disruption of the steel strips traveling through the design of voltage switching circuit.

Geometric parameter optimization in multi-axis machining

2008 ◽  
Vol 40 (8) ◽  
pp. 879-890 ◽  
Author(s):  
Tao Ye ◽  
Cai-Hua Xiong
Keyword(s):  
Geometric Parameter ◽  
Parameter Optimization
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