Heat transfer tube

摘要

A heat transfer tube (1) for effecting heat transfer between a wall (2) of the tube (1) and a fluid flowing through said tube (1) has an internal spirally fluted surface (3). Each flute (4) is at a common helix angle relative to the axis of the tube and each is asymmetrical in cross section. The asymmetry of the flutes (4) provides for high heat transfer coefficients with a reduction in the friction factor. Thus high performance heat exchange is possible with a reduced loss of pressure in the fluid as it flows through the tube (1).