Mathematical Problems in Engineering / 2019 / Article / Tab 6

Research Article

Effect of Thermal Cycling on Operational Characteristics and Lifetime Prediction of Space Pulse Tube Refrigerator

Table 6

Predicted lifetimes of the PTRs under thermal cycling condition.

PrototypeCycle to failure (Nf)Lifetime prediction (hour)

Type A No. 1690115900
Type A No. 2753126500
Type B No. 1733123100
Type B No. 2748125600