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Researcher developing technology to predict vapour explosion-induced accidents in boilers

Technology, Research, Artificial Intelligence, New Delhi, Vapour Explosion

Web Admin

Web Admin

5 Dariya News

New Delhi , 03 Jan 2022

Artificial Intelligence (AI) and machine learning may soon be used to develop indigenous technology for prediction and control of vapour explosion-induced accidents in boilers so as to prevent such mishaps.The development assumes importance in view of the fact that a staggering 23,000 boiler accidents have been recorded worldwide over the past 10 years, wherein India alone accounts for the 34 per cent of the global deaths.An Associate Professor in the Department of Mechanical Engineering, IIT-Patna, Rishi Raj, and a recipient of this year's Swarnajayanti fellowship instituted by the Department of Science and Technology (DST), Government of India, is working on a "novel" technology utilising Artificial Intelligence/Machine Learning to develop prognostic tools for advance prediction and control of vapor explosion-induced accidents in boilers."This indigenous technology for online monitoring and control of boiling process will help improve the health, efficiency, and economy of boilers used in key industrial and strategic applications. It bridges the gap between the fundamental knowledge of bubble dynamics on a heated substrate and about how boiling actually occurs in large-scale systems used in chemical, thermal, nuclear, petroleum, space-based, and manufacturing applications," said a release from the Ministry of Science & Technology.Rishi Raj recently demonstrated that the acoustic fingerprint associated with bubbles may be instrumental in decoding the science of boiling. The thermal and optical characterisation strategies represent a two-dimensional map of the actual three-dimensional boiling phenomena.In comparison, the sound of boiling imbibes statistically rich and temporally resolved information of bubble activity. 

For this, his research group has developed an acoustic emission-based deep learning framework which enables advance prediction of boiling crisis to mitigate thermal runaway induced failures in boiling-based systems."Boiling crisis or very vigorous boiling or formation of bubbles is dangerous for applications due to sudden increases in pressure and temperature," the release said.Rishi Raj now proposes that with support of the Swarnajayanti fellowship, he will visualise the bubble behaviour in terms of size, number density, and frequency of bubble formation and couple it with sound and thermal (temperature) data to get to the root of the problem and explain the physics of the phenomenon.The eventual goal is to identify the dominant bubble activity features to develop a physics-informed tool for the advance prediction of boiling regimes using a single acoustic sensor (hydrophone). Such a tool may then be deployed to invoke pre-emptive control of vapour explosion-induced accidents in industrial boilers.In this regard, he proposes to demonstrate a feedback control strategy to initiate auxiliary cooling units to avoid undesired thermal runaway in an existing 30 kW fire-tube boiler installed at IIT-Patna. Additional demonstrations will include complete mitigation of sudden increase in temperature from a few hundred to above thousand degrees (thermal runaway) observed during boiling crisis in challenging scenarios of boiling in space-based zero-gravity conditions and to develop smart thermal management solutions for miniaturised electronic devices."Such sudden and large increase in temperature usually results in pressure increase or meltdown of metallic components leading to leakage and explosion or other accidents," the release informed.Improved safety due to the modernisation of boilers, higher productivity due to reduction in downtime, and optimal usage of energy and water resources are together anticipated to address important sustainability challenges.

 

Tags: Technology , Research , Artificial Intelligence , New Delhi , Vapour Explosion

 

 

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