Design and Implementation of Distributed Ultra-High Temperature Sensing System With a Single Crystal Fiber
Modern high-temperature processes, such as fossil energy production, nuclear reactors, and chemical reactors lack robust, distributed sensing systems to map temperatures in these high-value harsh-environment systems. Regular silica-fiber-based distributed temperature sensing systems usually only operate at temperatures below about 800 °C. In this paper, we present the design, implementation, and testing of a distributed ultra-high temperature sensing system using Raman scattering intensity, which operates from room temperature to above 1400 °C. Consideration is given to the impacts of thermal radiation, fluorescence, and the multimode nature of unclad single-crystal fiber to optimize the system. Results from picosecond and sub-nanosecond lasers were compared. Measurements were taken with a ~2 m sapphire optical fiber, which represents the longest commercially available length. Here, a spatial resolution of 12.4 cm and position standard deviation of 0.28 mm were achieved up to the maximum testing temperature of 1400 °C, which is a new record for distributed temperature sensing systems.
- Research Organization:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
- Sponsoring Organization:
- FE; USDOE
- OSTI ID:
- 1509709
- Report Number(s):
- NETL-PUB-22326
- Journal Information:
- Journal of Lightwave Technology, Journal Name: Journal of Lightwave Technology Journal Issue: 23 Vol. 36; ISSN 0733-8724
- Publisher:
- IEEECopyright Statement
- Country of Publication:
- United States
- Language:
- English
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journal | September 2019 |
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journal | October 2019 |
Monitoring a Heatsink Temperature Field Using Raman-Based Distributed Temperature Sensor in a Vacuum and −173 °C Environment
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journal | September 2019 |
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