Boiling on plate fin and annular fin
Journal
International Communications in Heat and Mass Transfer
Journal Volume
25
Journal Issue
8
Pages
1169-1180
Date Issued
1998
Author(s)
Lin W.W.
Abstract
This paper for the first time theoretically investigated the heat transfer performance and associated stability characteristics of a plate fin or an annular fin subject to boiling. Stability analysis reveals that in both cases, the N, F, TN and FTN modes are stable; while in the T or FT modes, the operation remains stable only if the fin length is less than some critical value. Plate fin is potentially useful in constant heat flux applications. On the basis of the same fin's base area and volume, the annular fin can deliver more heat and provide wider operational range of base superheat.This paper for the first time theoretically investigated the heat transfer performance and associated stability characteristics of a plate fin or an annular fin subject to boiling. Stability analysis reveals that in both cases, the N, F, TN and FTN modes are stable; while in the T or FT modes, the operation remains stable only if the fin length is less than some critical value. Plate fin is potentially useful in constant heat flux applications. On the basis of the same fin's base area and volume, the annular fin can deliver more heat and provide wider operational range of base superheat.
Type
journal article