Patent ID: 9611967
Date: 2017-04-04
CPC Classifications: F16L

Claim:
1. A system for transferring and heating fluid comprising: a fluid transfer pipe having an internal surface and an external surface; and at least one helical heating rib co-extruded and integrally formed with the internal surface of the fluid transfer pipe structured and arranged to generate non-laminar flow and to heat the fluid as it flows through the fluid transfer pipe, wherein the at least one helical heating rib has a pitch ratio L:D of greater than 2:1, the at least one helical heating rib does not extend along the entire length of the fluid transfer pipe, the at least one helical heating rib is located in at least one heated section of the fluid transfer pipe, and the at least one heated section has a section length that is less than 50 percent of an overall length of the fluid transfer pipe.