摘要
在氦制冷机 /液化器中 ,最末级的冷却一般采用节流方式。节流级的各参数的选择必然会影响氦制冷机的制冷量或氦液化率。讨论了节流级节流前压力、末级换热器的热端温度及其效率对制冷量或液化率的影响 。
J_T valve is commonly used in the last cooling stage of a helium refrigerator.The parameters of J_T stage affect the refrigerating power of refrigerator or the liquid yield of liquefier.The dependence of refrigerating power or li_ quid yield are given on these parameters:the pressure before J_T valve,the warm end temperature and the efficiency of the last heat exchanger.The optimum working state of J_T stage is obtained in different refrigerating modes.
出处
《真空与低温》
2001年第3期149-153,共5页
Vacuum and Cryogenics
