IR camera studies pipe temperature
A
Cedip Infrared Systems product story
Edited by the Engineeringtalk editorial team
Sep 6, 2007
In order to simulate and study the behaviour of hot fluids in pipes the CEA developed two test rigs that use the Silver 480M camera to measure pipe wall temperatures.
The Department of Gas and Diphasic Thermohydraulics at the CEA has selected a Cedip Infrared Systems Silver 480M IR camera system to study thermal transfers in pipes walls under high-flow, high-pressure and high-temperature conditions.
In a typical gas cooled reactor the temperature of the fluid lies between 100 with 350C and the temperature of pipes walls varies between 20 and 80C.
Thermal transfer phenomena on pipe wall surfaces determine the performance and long-term behaviour of the reactor.
In order to design and build more efficient, reliable and safe reactors it is therefore essential to be able to precisely measure pipe wall temperatures.
The Silver 480M was selected by the CEA as it was an affordable, high-performance 3-5um IR camera offering sensitivity and high-frequency acquisition capabilities.
In order to simulate and study the behaviour of hot fluids in pipes the CEA developed two test rigs that use the Silver 480M camera to measure pipe wall temperatures, heat exchange coefficients and characterise boiling processes.
The first test rig, comprising a heated cell with a sapphire window (transparent in the 3-5um region), has enabled the Silver 480M to visualise and thermally characterise the fluid boiling process.
The second test rig, comprising a heated Inconel wall and a heat extractor charged to extract the power generated by the induced Joule effect in the wall, has enabled the Silver 480M to measure transient thermal transfers in the wall (2000C/s).
The Silver 480M uses its analogue inputs for synchronous acquisition of external sensor signals that, after processing by an advanced 'lock-in' technique, enable highly sensitive and accurate nondestructive evaluation.
The Silver 480M is programmable from 1to 400Hz in full frame mode, offers a sub-array windowing mode with integration time adjustable in 1us increments and smart external triggering capability synchronising image capture to even the most transient events.
The Silver 480M offers true plug and play compatibility with standard computers as well as third-party frame grabbers and image processing software.
Using either Camlink or GigE interfaces the Silver 480M is able to transmit commands and transfer video images at 40MHz pixel rate and full 14bit dynamic range.
Comprehensive image analysis software dedicated to thermal measurement comes as standard.
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