고온환경에서 라만분포형 온도센서의 우연 오차에 관한 연구

초록

This study experimentally investigated the random errors associated with a Raman scattering-based distributed temperature sensor (DTS) under high-temperature conditions to assess its applicability in high-temperature plant environments and advanced reactor systems. The DTS was assessed under three distinct temperature conditions: 300 ℃, 350 ℃, and 400 ℃. Under the initial temperature conditions, the normalized standard deviation was used to quantify performance, while subsequent analyses utilized the standard deviation to assess the measurement uncertainty. The DTS maintained a normalized standard deviation of less than 0.5 under all tested conditions, confirming its consistent and reliable performance. Furthermore, an increase in integration time resulted in a decrease in standard deviation, enhancing the stability and precision of the measurements. In particular, the curved pipe section exhibited greater variability than the straight pipe section, suggesting that the structural geometry of the piping system has a significant influence on the sensor performance. These findings underscore the potential of DTS technology for precise and real-time thermal monitoring in high-temperature systems, offering significant benefits for advanced reactor applications.

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