Singlemode-multimode-singlemode fibre structure for phase transition monitoring in phase changing materials (invited paper)

Kumar, Rahul, Han, Wei, Liu, Dejun, Ng, Wai Pang, Binns, Richard, Busawon, Krishna, Fu, Yong Qing, Ghassemlooy, Zabih, Underwood, Chris, Mahkmov, Khamid, Yuan, Jinhui, Yu, Chongxiu, Shu, Huazhong, Li, Xing Ao, Guo, Tuan, Farrell, Gerald, Semenova, Yuliya and Wu, Qiang (2018) Singlemode-multimode-singlemode fibre structure for phase transition monitoring in phase changing materials (invited paper). Journal of Physics: Conference Series, 1065. p. 252024. ISSN 1742-6588

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Official URL: http://dx.doi.org/10.1088/1742-6596/1065/25/252024

Abstract

A platinum-coated singlemode-multimode structure is investigated in this paper as an optical fibre sensor (OFS) to monitor the phase transition of a phase change material (PCM). Paraffin wax has been used as an example to demonstrate the sensor's performance and operation. Most materials have the same temperature but different thermal energy levels during the phase change process, therefore, sole dependency on temperature measurement may lead to an incorrect estimation of the stored energy in PCM. The output spectrum of the reflected light from the OFS is very sensitive to the bend introduced by the PCM where both liquid and solid states exist during the phase transition. The measurement of strain experienced by the OFS during the phase change of the PCM is utilized for identifying the phase transition of paraffin wax between the solid and liquid states. The experimental results presented in this paper show that the OFS can measure the phase change point of paraffin wax and the sensor with a multimode fibre length of 10 mm measured the phase transition temperature range from 37.8 °C to 57.7 °C.

Item Type: Article
Subjects: F300 Physics
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Becky Skoyles
Date Deposited: 05 Jun 2019 14:03
Last Modified: 11 Oct 2019 09:06
URI: http://nrl.northumbria.ac.uk/id/eprint/39506

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