scholarly journals Optimization Analysis of the Structural Design of NNBI Cryosorption Pumps

Energies ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3628
Author(s):  
Jiaqi Lang ◽  
Chundong Hu ◽  
Yuanlai Xie ◽  
Yunhua Tong
Keyword(s):  
Structural Design ◽  
Radiation Heat Transfer ◽  
Transmission Probability ◽  
Radiation Heat ◽  
Optimization Analysis ◽  
Neutral Beam Injector ◽  
Factors Affecting ◽  
Solid Adsorbents ◽  
Gas Molecules ◽  
Heat Loads

Cryosorption pumps create a vacuum by adsorbing gas at low temperature through porous solid adsorbents. The transmission probability of gas molecules and heat loads of cryosorption pumps are important factors affecting its performance. Herein, Molflow software based on the Monte Carlo principle is used to analyze the effects of the structural design of cryosorption pumps on transmission probability. The influence of structural design on radiation heat transfer is analyzed by ANSYS Steady-State Thermal software. This provides a reference for the design of a cryosorption pump to validate the prototype of a neutral beam injector for the China Engineering Fusion Experimental Reactor (CFETR).

Analysis of Waste Heat Recovery to Steel Scrap Preheating in an Enclosure Vessel

2004 ◽  
Vol 449-452 ◽  
pp. 329-332 ◽  
Author(s):  
T. Wang ◽  
Masahiro Kawakami ◽  
Kazuya Mori ◽  
S.H. Shahidan
Keyword(s):  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Radiation Heat Transfer ◽  
Three Dimensional ◽  
Casting Process ◽  
Steel Scrap ◽  
Radiation Heat ◽  
Continuous Casting Process ◽  
Factors Affecting

A method for preheating steel scraps using waste heat in a continuous casting process was proposed. Experiment and numerical analysis were carried out to examine the ability of scrap preheating and to determine the factors affecting the rise in scrap temperature. Coupled natural convection-radiation heat transfer was solved by three-dimensional FEM. The distance and the constant were found to influence the sample's temperature rise greatly. The overall Nusset number can be obtained as Nu0=(-0.33α*D*0.8+7.08)Ra0.15t*-1- 32.4D*-0.99α*-1.98 *-1.98

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