Abstract
For serrated fin tubes, the analytical solution, the approximate equation, and the correction factor of fin efficiency are reported by Hashizume et. al. However, they are based on the data using staggered tube bundles. Therefore, this paper studied whether it can be applicable for inline tube bundles and shallow bundles. As a result, it was found the followings; Regardless of the fin tube in the rear, the fin efficiency of the 1st row is possible to calculate with the accuracy of ±5% by the method for staggered tube bundles. Regardless of the fin tube in the front, the fin efficiency of after the 2nd row became possible to calculate with the accuracy of ±5% by the method that was proposed there. And also these became clear with that these are valid both plain and serrated fin tubes.
