THERMAL SCIENCE
International Scientific Journal
EXPERIMENTAL STUDY ON CONDENSATION FRICTION PRESSURE DROP IN ROTATING CHANNELS AND PROPOSAL OF NEW CORRELATION
ABSTRACT
The multi-channel cylinder dryer uses the small channels with high heat transfer efficiency to improve the drying efficiency. In practical working conditions, the multi-channel cylinder dryer runs under the rotating state, which would greatly affect the pressure drop of inside two-phase steam. However, the condensation friction pressure drop of two-phase flow in rotating channels has not been well explored. Herein, the condensation pressure drop of two-phase steam in rotating rectangular channels are elaborately studied based on a homemade rotating experiment system. The results show that the friction pressure drop of two-phase flow decreases with the increase of rotation Reynolds number, while increases with the increase of mass flux. Finally, a new correlation of friction pressure drop for two-phase flow condensation in rotating channels is proposed and evaluated by the experimental data.
KEYWORDS
PAPER SUBMITTED: 2022-03-13
PAPER REVISED: 2022-06-09
PAPER ACCEPTED: 2022-06-11
PUBLISHED ONLINE: 2022-08-13
THERMAL SCIENCE YEAR
2022, VOLUME
26, ISSUE
Issue 6, PAGES [5253 - 5266]
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