For HCFC22, the enhancement of condensation heat transfer outside two kinds of enhanced tubes versus the plain tube is larger than that for R407C.
对于所试验的两种强化管，HCFC22的管外冷凝换热系数的强化效果比R407C更明显。
2
Reliability design methods of rotors, blades, bearing and outside cages of rotary machinery and vibration machinery, as well as tubes of heat changer are elucidated with some practical examples.
An indexing conveyor moves tubes through cap and coupling application stations, after which bar code labels are applied to the outside diameter of the tubes.