In this article, six kinds of reverse Brayton cycles of helium are studied analytically and the flow field of the header of their heat exchangers is simulated numerically.

• 本文正是基于上述考虑，选取了六种氦气逆布雷顿制冷循环模式，并对其进行了热力学分析，详细地讨论并对比了各个循环模式的用能情况，同时还对回路中采用的换热器封头内部流场进行了数值模拟。