Remote high-temperature insulatorless heat-flux gauge

Patent · Fri Jan 01 00:00:00 EST 1993

OSTI ID:869091

Noel, Bruce W ^[1]

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1. Espanola, NM

A remote optical heat-flux gauge for use in extremely high temperature environments is described. This application is possible because of the use of thermographic phosphors as the sensing media, and the omission of the need for an intervening layer of insulator between phosphor layers. The gauge has no electrical leads, but is interrogated with ultraviolet or laser light. The luminescence emitted by the two phosphor layers, which is indicative of the temperature of the layers, is collected and analyzed in order to determine the heat flux incident on the surface being investigated. The two layers of thermographic phosphor must be of different materials to assure that the spectral lines collected will be distinguishable. Spatial heat-flux measurements can be made by scanning the light across the surface of the gauge.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• DOE Contract Number: W-7405-ENG-36
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 5273359
• OSTI ID: 869091
• Country of Publication: United States
• Language: English

Related Subjects

remote
high-temperature
insulatorless
heat-flux
gauge
optical
extremely
temperature
environments
described
application
thermographic
phosphors
sensing
media
omission
intervening
layer
insulator
phosphor
layers
electrical
leads
interrogated
ultraviolet
laser
light
luminescence
emitted
indicative
collected
analyzed
determine
heat
flux
incident
surface
investigated
materials
assure
spectral
lines
distinguishable
spatial
measurements
scanning
thermographic phosphor
optical heat
flux gauge
spectral line
electrical leads
heat flux
laser light
temperature environments
phosphor layers
sensing media
remote optical
spectral lines
temperature environment
electrical lead
lines collected
thermographic phosphors
heat-flux gauge
flux incident
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