Argonne designs molten salt–based heat exchanger with ML-based monitoring

[Marlin]

Argonne designs molten salt–based heat exchanger with ML-based monitoring

https://www.ans.org/news/2026-09-23/article-8422/argonne-designs-molten-saltbased-heat-exchanger-with-mlbased-monitoring/

[Core Content]

Researchers at Argonne National Laboratory developed a compact heat exchanger design for molten salt reactors that uses embedded fiber-optic sensors and machine learning. The system detects internal blockages and temperature anomalies early without requiring safety-compromising wall penetrations. This technology helps operators prevent unexpected failures, minimize unplanned outages, and maintain high plant availability during long fuel cycles.

Researchers at Argonne National Laboratory have proposed a compact matrix-type heat exchanger for reactors using molten salt as a coolant, featuring an embedded hardware-software system designed to improve reliability and reduce costly interruptions.

The heat exchanger is a critical component of any reactor, transferring thermal energy away from the reactor core for use, either directly or to make electricity. Reactors using molten salt for this function must be monitored for blockages caused by fluid freezing, which could result from impurity accumulation or inadequate insulation. These can slow down operations and may require urgent attention.

Read the full article at ans.org:
https://www.ans.org/news/2026-09-23/article-8422/argonne-designs-molten-saltbased-heat-exchanger-with-mlbased-monitoring/