Surface probe for measurement of liquid contact in film and transition boiling on high-temperature surfaces
Journal Article
·
· Rev. Sci. Instrum.; (United States)
A microthermocouple probe to detect liquid contacts on a high-temperature surface during film and transition boiling regimes is described. Experiments indicate the probe and its associated data recording and processing circuits have sufficiently rapid response to provide quantitative measurements of individual liquid contacts, permitting calculations of contact frequencies and durations, and of average vapor versus liquid contact time fractions. Initial experimental results for pool boiling of saturated water at atmospheric pressure, in the quenching of a high-temperature copper block, indicated that the liquid contact time fraction increased from 10% to 65% in 7 s as the block surface temperature cooled from 483 to 418 K.
- Research Organization:
- Institute of Thermo-Fluid Engineering and Science, Lehigh University, Bethlehem, Pennsylvania 18015
- DOE Contract Number:
- AC07-76ID01570
- OSTI ID:
- 5074935
- Journal Information:
- Rev. Sci. Instrum.; (United States), Journal Name: Rev. Sci. Instrum.; (United States) Vol. 53:9; ISSN RSINA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
420400 -- Engineering-- Heat Transfer & Fluid Flow
440300* -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
BOILING
COPPER
DATA ACQUISITION SYSTEMS
DATA PROCESSING
ELEMENTS
FILMS
FLUIDS
FUNCTIONS
HIGH TEMPERATURE
HYDROGEN COMPOUNDS
LIQUIDS
MEASURING INSTRUMENTS
MEDIUM PRESSURE
METALS
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PROBES
PROCESSING
QUENCHING
RESPONSE FUNCTIONS
SATURATION
SURFACES
TEMPERATURE MEASUREMENT
THERMOCOUPLES
TRANSITION BOILING
TRANSITION ELEMENTS
WATER
420400 -- Engineering-- Heat Transfer & Fluid Flow
440300* -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
BOILING
COPPER
DATA ACQUISITION SYSTEMS
DATA PROCESSING
ELEMENTS
FILMS
FLUIDS
FUNCTIONS
HIGH TEMPERATURE
HYDROGEN COMPOUNDS
LIQUIDS
MEASURING INSTRUMENTS
MEDIUM PRESSURE
METALS
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PROBES
PROCESSING
QUENCHING
RESPONSE FUNCTIONS
SATURATION
SURFACES
TEMPERATURE MEASUREMENT
THERMOCOUPLES
TRANSITION BOILING
TRANSITION ELEMENTS
WATER