Fiber optic probe sensor for supercritical fluid heat transfer measurement

Yiwei Cheng; Xiaotian He; Jinliang Xu

doi:10.1117/12.2637502

13 May 2022 Fiber optic probe sensor for supercritical fluid heat transfer measurement

Yiwei Cheng, Xiaotian He, Jinliang Xu

Proceedings Volume 12248, Second International Conference on Sensors and Information Technology (ICSI 2022); 122480B (2022) https://doi.org/10.1117/12.2637502
Event: 2nd International Conference on Sensors and Information Technology (ICSI 2022), 2022, Nanjing, China

Abstract

To improve the efficiency of power generation systems, the boiling-like phenomenon in supercritical fluid heat transfer has attracted much attention. However, traditional tapered fiber optic probes are not suitable for supercritical fluid twophase- like distribution detection. In this paper, a fiber optic probe sensor with a flat end face that can continuously measure the refractive index and density of fluids is developed and tested using water, CO₂, and ethanol. The average relative error of density measurement is less than 0.1 %. Applied to a supercritical fluid pool heat transfer experimental system, the probe's signal coincided with the visualization phenomenon very well. The frequency of gas-like film detachment from the surface of the heating wire could be accurately measured using the probe.

Citation Download Citation

Yiwei Cheng, Xiaotian He, and Jinliang Xu "Fiber optic probe sensor for supercritical fluid heat transfer measurement", Proc. SPIE 12248, Second International Conference on Sensors and Information Technology (ICSI 2022), 122480B (13 May 2022); https://doi.org/10.1117/12.2637502

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