Table 3 Specific parameters of piston samples.
From: Effect of gas flow rate on the gas-lubricated piston in a stirling cryocooler
Piston size | Porous media | Measurement value (L/min) | Converted value (m3/s) | |||
|---|---|---|---|---|---|---|
Parameter | Material | Surface | ||||
1 | D1 = 30 mm L1 = 26 mm L2 = 13 mm h = 15 μm | ⌀2 mm×2.8 mm | Stainless steel | Not polished | 407 | 6.78 × 10− 6 |
2 | Titanium | Not polished | 610 | 1.02 × 10− 5 | ||
3 | Stainless steel | Polished | 1279 | 2.14 × 10− 5 | ||
