Over the last two years we have witnessed a continuation in the breakthrough shift toward pulse tube cryocoolers for long-life, high-reliability cryocooler applications. One class of pulse tubes that ...Celý popis
Over the last two years we have witnessed a continuation in the breakthrough shift toward pulse tube cryocoolers for long-life, high-reliability cryocooler applications. One class of pulse tubes that has reached maturity is referred to as "Stirling type" because they are based on the linear Oxford Stirling-cooler type compressor they generally provide cooling in the 30 to 100 K temperature range and operate at frequencies from 30 to 60 Hz. The other type of pulse tube cooler making great advances is the so-called "Gifford-McMahon type. " Pulse tube coolers of this type use a G-M type compressor and lower frequency operation to achieve temperatures in the 2 to 10 K temperature range. Nearly a third of this proceedings covers these new developments in the pulse tube arena. Complementing the work on low-temperature pulse tubes is substantial continued progress on rare earth regenerator materials and Gifford-McMahon coolers. These technologies continue to make great progress in opening up the 2 - 4 K market. Also in the commercial sector, continued interest is being shown in the development of long-life, low-cost cryocoolers for the emerging high temperature superconductor electronics market, particularly the cellular telephone base-station market. At higher temperature levels, closed-cycle J-T or throttle-cycle refrigerators are taking advantage of mixed refrigerant gases, spearheaded in the former USSR, to achieve low-cost cr- cooler systems in the 65 - 80 K temperature range.
Prečo nakupovať na Enbooku?
VEĽKÝ VÝBER
Ponúkame milióny kníh v angličtine. Od beletrie až po tie najodbornejšie odborné.
POŠTOVNÉ ZADARMO
Poštovné už od 2,99 € a pri objednávke nad 60 € doprava na pobočku Zásielkovne zadarmo
SKVELÉ CENY
Ceny kníh sa snažíme držať pri zemi a vždy pod cenou odporúčanou vydavateľom, aby si ich mohol kúpiť naozaj každý.
OVERENÉ ZÁKAZNÍKMI
Získali sme certifikát "Overené zákazníkmi" na Heureka.sk. Prezrite si naše recenzie
ONLINE PODPORA
Môžete využiť online chat, email alebo nám zatelefonovať.