Open AccessExperimental studies of non-stationary thermo-hydraulic processes at freon R113 boiling
Author(s) -
O. O. Milman,
P. A. Ananyev,
M. O. Korlyakova,
V. O. Miloserdov
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1382/1/012114
Subject(s) - freon , boiling , natural circulation , instability , thermal hydraulics , materials science , mechanics , condensation , thermodynamics , heat flux , thermal , heat transfer , physics
An experimental unit has been created to study the processes of boiling and condensation in a closed loop. Experimental studies of non-stationary thermo-hydraulic processes at freon R 113 boiling have been carried out inside tubes of low pressure natural circulation systems. Key factors have been identified affecting auto-oscillations characteristics: filling level of the loop, pressure, heat flux density, geometric characteristics of the evaporating elements. Four characteristic modes of operation of such units have been found out. Thermo-hydraulic auto-oscillations at high thermal loads have been studied. Process parameters and conditions under which there is no thermo-hydraulic instability have been determined. The phenomenon of thermo-hydraulic resonance has been detected. The influence of the heating method on the instability characteristics has been revealed.