منابع مشابه
An introduction to cryogenics
These notes aim to give a somewhat basic introduction to the hows (and occasionally whys) of cryogenics. Cryogenics is not a very well defined term; here I have taken it to mean systems that operate at temperatures of 77 K and below, with the emphasis on systems operating below 4.2 K and above 1 K. The first two temperatures are, of course, the boiling points of nitrogen and helium respectively...
متن کاملRefrigeration, Cryogenics, Optics, and Miscellaneous
Overall Cycles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Components of Compression Systems . . . . . . . . . . . . . . . . Absorption Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Air Machines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Thermoelectric Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . Copyright...
متن کاملEvaluation of cryogenics-based energy storage concepts
The goal of this paper is to evaluate cryogenics-based energy storage concepts: A thermo-electric energy storage unit, which uses surplus electricity while liquefying a gas, subsequently stored at cryogenic temperature. Here we review and evaluate concepts for power generation while regasifying the liquefied gas (cryogen) using an exergetic analysis. Two cold exergy recovery cycle configuration...
متن کاملSurface-confined molecular coolers for cryogenics.
An excellent molecule-based cryogenic magnetic refrigerant, gadolinium acetate tetrahydrate, is here used to decorate selected portions of silicon substrate. By quantitative magnetic force microscopy for a variable applied magnetic field near liquid-helium temperature, the molecules are demonstrated to hold their magnetic properties intact, and therefore their cooling functionality, after their...
متن کاملSuperconductivity, Cryogenics, and Vacuum Technology for Linear Accelerators*
The conventional, 10 -8 ’ Torr-range, ion-pumped vacuum system of the SLAC 3.2~km linear accelerator is briefly described, along with typical performance data. Since polarized electron sources are of increasing importance to high-energy research, the necessary physical environments for such sources is given, and differential pumping and/or isolation systems capable of maintaining those conditio...
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ژورنال
عنوان ژورنال: TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan)
سال: 1983
ISSN: 0389-2441,1880-0408
DOI: 10.2221/jcsj.18.165