Measurement of the onset of nucleate boiling in liquid xenon
Autor: | R. Saldanha, G. S. Ortega, Changki Mo, P. C. Rowson, B. Mong, P. A. Breur, M. Oriunno |
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Jazyk: | angličtina |
Rok vydání: | 2020 |
Předmět: |
Materials science
Physics - Instrumentation and Detectors Fluid Dynamics (physics.flu-dyn) chemistry.chemical_element Thermodynamics FOS: Physical sciences Instrumentation and Detectors (physics.ins-det) Physics - Fluid Dynamics Superheating Subcooling Physics::Fluid Dynamics Xenon chemistry Heat flux Boiling Fluid dynamics Instrumentation Mathematical Physics Nucleate boiling Bar (unit) |
Popis: | We report the first precision measurement of the superheat temperature required for bubble nucleation in liquid xenon of $\Delta T_{wall,ONB}$ = (16.9$\pm$0.5) K and $\Delta T_{wall,ONB}$ = (19.2$^{+0.4}_{-1.1}$) K at pressures of P = $(0.98\pm0.02)$ bar and P = $(1.32^{+0.05}_{-0.01})$ bar, respectively. Both are measured at a subcooled bulk fluid temperature of $\sim$ 162 K. A dedicated liquid xenon setup is used to measure the temperature at which bubble nucleation first appears on the flat surface of a resistor. The associated average heat flux at the surface of the resistor is determined using fluid dynamics simulations. Future experiments can use these experimental results to determine the likelihood of boiling in liquid xenon and to design effective thermal sinks that prevent bubble nucleation. Comment: 11 pages, 6 figures |
Databáze: | OpenAIRE |
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