The influence of the diagram design and the main parameters on the efficiency of helium liquefaction and refrigeration plants

✍ Scribed by G.B. Narinsky; L.V. Chernokov

• Publisher: Elsevier Science
• Year: 1992
• Tongue: English
• Weight: 279 KB
• Volume: 32
• Category: Article
• ISSN: 0011-2275
• DOI: 10.1016/0011-2275(92)90117-s

✦ Synopsis

The study has been performed concerning the influence of the design of helium liquefaction and refrigeration (4,5 K) plants (number of cooling stages in the area of regenerative-expander stages and methods of expander connection, appearance of liquefaction area, availability of nitrogen precoolin~) and thermodynamic parameters (direct flew pressure, relative underrecuperation, number of transfer units) on the refrigerating capacity, the degree Of helium liquefactien, the specific energy consumption. The areas of the regenerative-expander stages have been considered with the number ef expanders fr~ ene to four and and with their parallel, series and parallel-series eennection. The four versions of the liquefaction areas have been considered: with the threttle, with the expander, with the expander and the heat exchanger behind it, with two parallel-connected expanders.