| 摘要 |
The tube has a groove base thickness and a specified external diameter. Helical ribs (2) have specified apex angle, height, base width and helix angle. The ribs are separated by a groove (3) having specified base width. A monophase liquid e.g. water, and glycol aqueous solution, is circulated in a heat exchanger through the tube. The apex angle lies between 10 and 50 degrees and the helix angle lies between 20 and 50 degrees. An Independent claim is also included for a heat exchanger. |
