scholarly journals Commissioning and initial performance of the Dark Energy Camera liquid nitrogen cooling system

2012 ◽  
Author(s):  
H. Cease ◽  
D. DePoy ◽  
G. Derylo ◽  
H. T. Diehl ◽  
J. Estrada ◽  
...  
Keyword(s):  
Dark Energy ◽  
Liquid Nitrogen ◽  
Cooling System ◽  
Liquid Nitrogen Cooling

scholarly journals Performance of the dark energy camera liquid nitrogen cooling system

2014 ◽  
Author(s):  
H. Cease ◽  
M. Alvarez ◽  
R. Alvarez ◽  
M. Bonati ◽  
G. Derylo ◽  
...  
Keyword(s):  
Dark Energy ◽  
Liquid Nitrogen ◽  
Cooling System ◽  
Liquid Nitrogen Cooling

Thermal mode of metal-composite hydrogen balloon with liquid nitrogen cooling system

2021 ◽  
Vol 13 (10) ◽  
pp. 442-448
Author(s):  
Vladimir Zarubin ◽  
Sergey Zarubin ◽  
Vladimir Zimin ◽  
Yakov Osadchy
Keyword(s):  
Liquid Nitrogen ◽  
Cooling System ◽  
Thermal Mode ◽  
Metal Composite ◽  
Liquid Nitrogen Cooling

An Electrohydrodynamic (EHD) Meso Pump for Cryogenic Spot Cooling of Low Volume Complex Electronics

2003 ◽  
Author(s):  
M. Rada ◽  
M. Ohadi ◽  
A. Shooshtari
Keyword(s):  
Numerical Modeling ◽  
Low Temperature ◽  
Temperature Variation ◽  
Liquid Nitrogen ◽  
Cooling System ◽  
Operating Conditions ◽  
Low Volume ◽  
Liquid Nitrogen Cooling ◽  
Spot Cooling ◽  
Set Up

Low temperature cooling provides excellent operating conditions for some conventional and superconducting electronics applications. The cooling requirements for these applications include moderate to low power levels (down to fraction of Watts) and very strict spatial and temporal temperature variation (in the order of 0.1K or less). In this paper, experimental and modeling results of a liquid nitrogen cooling system, using an EHD meso pump are presented. The pumping mechanism uses the EHD ion-drag technique. The experimental set-up, procedures and results are presented, followed by a pumping curve obtained by numerical modeling.

scholarly journals Recent Progress of Liquid Nitrogen Cooling System (LINCS) for Yokohama HTS Cable Project

2012 ◽  
Vol 36 ◽  
pp. 1313-1318 ◽  
Author(s):  
M. Watanabe ◽  
H. Yumura ◽  
H. Hirota ◽  
T. Masuda ◽  
M. Shimoda ◽  
...  
Keyword(s):  
Liquid Nitrogen ◽  
Recent Progress ◽  
Cooling System ◽  
Liquid Nitrogen Cooling

A conduction-cooled stage for high-resolution Cryo-SEM

1992 ◽  
Vol 50 (2) ◽  
pp. 1282-1283
Author(s):  
John G. Sheehan
Keyword(s):  
High Resolution ◽  
Liquid Nitrogen ◽  
Mechanical Stability ◽  
Cooling System ◽  
Cold Trap ◽  
Nitrogen Gas ◽  
Particulate Suspensions ◽  
Advantages And Disadvantages ◽  
Convection Cooling ◽  
Styrene Butadiene

The goal is to examine with high resolution cryo-SEM aqueous particulate suspensions used in coatings for printable paper. A metal-coating chamber for cryo-preparation of such suspensions was described previously. Here, a new conduction-cooling system for the stage and cold-trap in an SEM specimen chamber is described. Its advantages and disadvantages are compared to a convection-cooling system made by Hexland (model CT1000A) and its mechanical stability is demonstrated by examining a sample of styrene-butadiene latex.In recent high resolution cryo-SEM, some stages are cooled by conduction, others by convection. In the latter, heat is convected from the specimen stage by cold nitrogen gas from a liquid-nitrogen cooled evaporative heat exchanger. The advantage is the fast cooling: the Hexland CT1000A cools the stage from ambient temperature to 88 K in about 20 min. However it consumes huge amounts of liquid-nitrogen and nitrogen gas: about 1 ℓ/h of liquid-nitrogen and 400 gm/h of nitrogen gas. Its liquid-nitrogen vessel must be re-filled at least every 40 min.

Numerical Thermal Simulation of Cryogenic Power Modules Under Liquid Nitrogen Cooling

2005 ◽  
Vol 128 (3) ◽  
pp. 267-272 ◽  
Author(s):  
Hua Ye ◽  
Harry Efstathiadis ◽  
Pradeep Haldar
Keyword(s):  
Liquid Nitrogen ◽  
Electrical Current ◽  
Oxide Semiconductor ◽  
Junction Temperature ◽  
Electronic Systems ◽  
Power Module ◽  
Power Modules ◽  
Allowable Range ◽  
Liquid Nitrogen Cooling ◽  
Thermal Simulations

Understanding the thermal performance of power modules under liquid nitrogen cooling is important for the design of cryogenic power electronic systems. When the power device is conducting electrical current, heat is generated due to Joule heating. The heat needs to be efficiently dissipated to the ambient in order to keep the temperature of the device within the allowable range; on the other hand, it would be advantageous to boost the current levels in the power devices to the highest possible level. Projecting the junction temperature of the power module during cryogenic operation is a crucial step in designing the system. In this paper, we present the thermal simulations of two different types of power metal-oxide semiconductor field effect transistor modules used to build a cryogenic inverter under liquid nitrogen pool cooling and discussed their implications on the design of the system.

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