From design to production and testing of hydrogen thermal charging laboratorial equipment

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master_Koshta_Eklavya_2025.pdf (13.14 MB)

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School of Engineering | Master's thesis
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Date

2024-12-31

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Mechanical Engineering

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Degree programme

Master's programme in Mechanical Engineering

Language

en

Pages

166

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Abstract

Hydrogen thermal charging represents a significant advancement in the study of hydrogen-material interactions, and critical serving in laboratorial test protocols for material characterization. This thesis presents the development of an innovative laboratory-scale hydrogen thermal charging apparatus that offers a cleaner, safer, and more efficient way of charging materials with hydrogen compared to conventional methods such as electrochemical, gaseous, and plasma-based charging. Utilizing pressurized high-purity state hydrogen gas and eddy current heating, the system provides precise control over temperature and pressure, enabling the possibility of detailed investigations of hydrogen absorption, adsorption, and hydrogen-induced defects in metallic samples. The equipment integrates several subsystems, including a sample feeding mechanism, vacuum and gas inlet/exhaust systems, and an advanced electrical and electronics framework. It employs an alternating current (AC) induction heating system and is operated through a PID controller software developed on LabVIEW for precise temperature regulation and real-time monitoring using K-type thermocouples. Safety is a paramount consideration, with the apparatus featuring a stainless-steel protective shield cabinet and door-locking mechanism to mitigate risks and ensure secure operation. Designed for metallic sample studies, this equipment, once validated and approved, can address key challenges such as hydrogen-induced defects in materials while supporting the development of advanced materials. By combining innovative design with safety measures, the system serves as a versatile and cheaper tool for advancing research in hydrogen technologies and materials science.

Description

Supervisor

Vilaca, Pedro

Thesis advisor

Santos Silva, Maria

Keywords

hydrogen thermal charging, eddy-currents, induction heating, mechanical design, pressurized gas system, vacuum system, material testing equipment

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https://urn.fi/URN:NBN:fi:aalto-202501221586

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[dipl] Insinööritieteiden korkeakoulu / ENG