HEAT TRANSFER TUBE FOR HEAT EXCHANGER AND REFRIGERATION DEVICE WITH HEAT TRANSFER TUBE FOR HEAT EXCHANGER

摘要

PROBLEM TO BE SOLVED: To minimize the deterioration of the performance of a refrigeration device caused by refrigerating machine oil in the refrigeration device using a carbon dioxide. SOLUTION: A groove twist angel (α) of the heat transfer tube (1) for a heat exchanger of a heat radiator mounted in the refrigeration device using the carbon dioxide is not larger than 10°. COPYRIGHT: (C)2009,JPO&INPIT