Abstract:
Some experimental results of Vuilleumier regfrigerator with power supplied by liquid nitrogen are given and compared with the analytical model for regenerative refrigerators and Schmidt’s. The results include the relations of refrigeration power
Q c with refrigeration temperature
T cw,the refrigeration power at 15 K,
Q c15 with phase angle θ, rotation speed
n,average pressure
P av and ratio volume γ(
V HO /
V CO )etc. Several matrix structures of the cold end regenerator are considered too.