Experimental Test of Superconductor Fault-Current Switchgear Using Liquid Nitrogen as the Insulation and Arc-Quenching Medium

2019 ◽  
Vol 29 (5) ◽  
pp. 1-4 ◽  
Author(s):  
Muhammad Junaid ◽  
Bin Xiang ◽  
Jianhua Wang ◽  
Zhiyuan Liu ◽  
Yingsan Geng
Keyword(s):  
Liquid Nitrogen ◽  
Experimental Test ◽  
Fault Current ◽  
Quenching Medium

scholarly journals Зависимость нагрева стабилизированных нержавеющей сталью токоограничивающих элементов на основе ВТСП-лент второго поколения от воздействия тока и параметров теплоотвода на границе с жидким азотом

2020 ◽  
Vol 46 (1) ◽  
pp. 28
Author(s):  
С.В. Самойленков ◽  
В.И. Щербаков ◽  
Д.Р. Кумаров ◽  
Д.А. Горбунова
Keyword(s):  
Heat Transfer ◽  
Mathematical Model ◽  
Stainless Steel ◽  
Surface Area ◽  
Liquid Nitrogen ◽  
Fault Current ◽  
Current Limiting

Fault current heating of the current limiting modules made of 2G HTS tapes and stabilized with stainless steel was studied. It is demonstrated that the speed of current limiting element heating hardly depends on the degree of the stainless steel stabilization. The ways to improve the heat transfer with the help of the increase of the elements’ surface area were demonstrated with the use of a mathematical model taking into account parameters of heat transfer to liquid nitrogen.

Experimental Test of Two Types of Non-Inductive Solenoidal Coils for Superconducting Fault Current Limiters Use

2017 ◽  
Vol 27 (4) ◽  
pp. 1-5 ◽  
Author(s):  
Fei Liang ◽  
Weijia Yuan ◽  
Jiahui Zhu ◽  
Min Zhang ◽  
Sriharsha Venuturumilli ◽  
...  
Keyword(s):  
Experimental Test ◽  
Fault Current ◽  
Fault Current Limiters

scholarly journals Description of liquid nitrogen experimental test facility

Cryogenics ◽  
1992 ◽  
Vol 32 (2) ◽  
pp. 173-178
Author(s):  
J.M. Jurns ◽  
R.E. Jacobs ◽  
N.H. Saiyed
Keyword(s):  
Liquid Nitrogen ◽  
Experimental Test ◽  
Test Facility

Electron Probe Microanalysis of Frozen Hydrated Kidneys, Isolated Cells, and Cultured Cells

1982 ◽  
Vol 40 ◽  
pp. 402-403 ◽  
Author(s):  
Claude Lechene
Keyword(s):  
Liquid Nitrogen ◽  
Electron Probe Microanalysis ◽  
Electron Probe ◽  
Cultured Cells ◽  
Liquid Nitrogen Temperature ◽  
Elemental Content ◽  
Isolated Cells ◽  
Renal Tubular Cells ◽  
Diamond Saw ◽  
Saw Blade

Electron probe microanalysis of frozen hydrated kidneysThe goal of the method is to measure on the same preparation the chemical elemental content of the renal luminal tubular fluid and of the surrounding renal tubular cells. The following method has been developed. Rat kidneys are quenched in solid nitrogen. They are trimmed under liquid nitrogen and mounted in a copper holder using a conductive medium. Under liquid nitrogen, a flat surface is exposed by sawing with a diamond saw blade at constant speed and constant pressure using a custom-built cryosaw. Transfer into the electron probe column (Cameca, MBX) is made using a simple transfer device maintaining the sample under liquid nitrogen in an interlock chamber mounted on the electron probe column. After the liquid nitrogen is evaporated by creating a vacuum, the sample is pushed into the special stage of the instrument. The sample is maintained at close to liquid nitrogen temperature by circulation of liquid nitrogen in the special stage.

A Liquid Nitrogen Cooled Stage for STEM

1974 ◽  
Vol 32 ◽  
pp. 444-445
Author(s):  
Louis T. Germinario
Keyword(s):  
Electron Microscope ◽  
High Resolution ◽  
Liquid Nitrogen ◽  
Room Temperature ◽  
Objective Lens ◽  
Thermal Drift ◽  
Specimen Holder ◽  
Resolution Capability ◽  
Focal Position

A liquid nitrogen stage has been developed for the JEOL JEM-100B electron microscope equipped with a scanning attachment. The design is a modification of the standard JEM-100B SEM specimen holder with specimen cooling to any temperatures In the range ~ 55°K to room temperature. Since the specimen plane is maintained at the ‘high resolution’ focal position of the objective lens and ‘bumping’ and thermal drift la minimized by supercooling the liquid nitrogen, the high resolution capability of the microscope is maintained (Fig.4).

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