Patent ID: 7178361
Filing Date: 2007-02-20
Classification: F25B,F28D,F28F,Y10T

Abstract:
1. A heat transfer tube suitable for use in a refrigerant evaporator comprising an outer surface, the outer surface comprising: a. a plurality of fins and a plurality of channels extending between the fins, wherein notches are formed in the fins; and b. at least one dual cavity nucleate boiling pore formed at the intersection of a notch and a channel, wherein the nucleate boiling pore comprises a first nucleate boiling cavity and a second nucleate boiling cavity, wherein the first nucleate boiling cavity is at least partially defined by at least a portion of the notch extending at least partially over the channel and wherein the second nucleate boiling cavity is at least partially defined by at least a portion of a notched fin extending at least partially over the notch.