Mathematical Problems in Engineering / 2019 / Article / Tab 1

Research Article

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

Table 1

Basic specification of the PTRs.

Type AType B

Cooling capacity1 W at 60 K5 W at 80 K
Total mass7.5 kg8.2 kg
Operational frequency50 Hz50 Hz
Maximum power consumption80 W120 W
ConfigurationSingle stageSingle stage
Pressure of helium gas3.25 MPa3.25 MPa
Designed lifetime8 years8 years
Sample size22
Reject temperature
 Nonoperation223–323 K223–323 K
 Operation243–283 K243–283 K