HEAT TRANSFER PIPE FOR CONDENSING WATER OUTSIDE OF PIPE

摘要

PROBLEM TO BE SOLVED: To provide a high performance heat transfer pipe for condensing water outside the pipe without causing increase weight per unit length.;SOLUTION: A pipe wall is pressed intermittently from the outside of the pipe to provide spirally intermittent protrusions 2 in the pipe. The outer parts of the pipe 1 corresponding to the protrusions 2, are depressions 3.;COPYRIGHT: (C)2002,JPO