Boiling of FC-72 on straight pin fin
Journal
International Communications in Heat and Mass Transfer
Journal Volume
26
Journal Issue
3
Pages
311-318
Date Issued
1999
Author(s)
Abstract
This paper deals with an experimental investigation of pin fin boiling of saturated and subcooled FC-72 under atmospheric pressure. Fin base temperature and heat flux data are measured along with the fin tip temperature. The basic features of boiling stability of fluorocarbon boiling on pin fin had been reported for the first time. For a given liquid/heating surface combination there exist upper steady-state (USS) branch and lower steady-state (LSS) branch, and a large, unstable regime located in between. Zones with different stability characteristics are mapped according to boiling on fins with different aspect ratios. Liquid subcooling can largely enhance heat transfer performance. A longer fin can provide a safer operation.This paper deals with an experimental investigation of pin fin boiling of saturated and subcooled FC-72 under atmospheric pressure. Fin base temperature and heat flux data are measured along with the fin tip temperature. The basic features of boiling stability of fluorocarbon boiling on pin fin had been reported for the first time. For a given liquid/heating surface combination there exist upper steady-state (LSS) branch and lower steady-state (LSS) branch, and a large, unstable regime located in between. Zones with different stability characteristics are mapped according to boiling on fins with different aspect ratios. Liquid subcooling can largely enhance heat transfer performance. A longer fin can provide a safer operation.
SDGs
Type
journal article