| Title |
Remote Monitoring System for Realtime Fault Detection of Solar Thermal Systems |
| Authors |
Il Kwon Kim ; Hee Won Lim ; Wang Je Lee ; Kyung Ho Lee ; Song SeopL ee ; U Cheul Shin |
| DOI |
https://doi.org/10.6110/KJACR.2024.36.12.594 |
| Keywords |
고장감지; 평판형집열기; 원격 모니터링시스템; 슈하르트관리도; 태양열시스템 Fault detection; Flat plate collector; Remote monitoring system; Shewhart control chart; Solar thermal system |
| Abstract |
To prevent economic losses caused by faults in solar thermal systems, continuous monitoring is essential for promptly detecting malfunctions and facilitating recovery. This study proposed a remote monitoring system equipped with simulation-based analysis of solar collector performance and fault detection algorithms validated through on-site testing. The predictive model employed ISO 24194:2022 equations for estimating collector array performance, while fault detection benchmarked the ratio of simulated to actual heat gains under normal operating conditions using Shewhart control charts. Results showed that Shewhart control charts accurately detected operational status of the solar system under various weather conditions. Despite occasional observations exceeding control limits due to weather fluctuations, normal operation resumed, distinguishing between transient deviations and persistent faults. The fault detection approach used in this study based solely on data suggests that if algorithms are implemented through open-source platforms, they could be seamlessly integrated into existing monitoring systems without incurring additional expenses. |