HEAT TRANSFER TUBE FOR HEAT EXCHANGER, HEAT EXCHANGER, REFRIGERATING CYCLE DEVICE AND AIR CONDITIONING DEVICE

摘要

<P>PROBLEM TO BE SOLVED: To provide a heat transfer tube and the like for a heat exchanger capable of obtaining prescribed heat transferring performance without increasing pressure loss in the tube. Ž<P>SOLUTION: The heat transfer tube includes high crests 22A formed spirally in the tube axial direction within a range of 10 to 20 lines with a prescribed height, and low crests 22B lower than the high crests 22A and formed within a range of 2 to 6 lines between the high crests 22A. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž