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Improving Hydrogen Safety for Energy Applications

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "A5: Hydrogen Energy".

Deadline for manuscript submissions: 20 July 2025 | Viewed by 1012

Special Issue Editor


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Guest Editor
School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Interests: hydrogen safety; hydrogen flow and heat transfer; hydrogen equipment; renewable energy applications; reliability assessment

Special Issue Information

Dear Colleagues,

As the global energy landscape is rapidly evolving, there is an urgent need for cleaner and more efficient energy solutions. Hydrogen energy stands at the forefront of the transition to sustainable energy solutions and is poised to play a vital role in shaping a carbon-neutral future. Meanwhile, scientists, engineers, and producers must recognize the crucial challenges in hydrogen energy use, such as hydrogen safety. Hydrogen safety is the key factor restricting the large-scale application of hydrogen energy, so it is necessary to deeply explore the innovation and safety research of hydrogen equipment.

Offering an open and professional communication platform, this Special Issue, “Improving Hydrogen Safety for Energy Applications”, aims to promote the discussion and communication of the latest and forefront ideas, technological innovation, and forecasts in themes and areas related to hydrogen equipment and safety.

It expects articles focusing on the following five themes:

  • Hydrogen flow and heat transfer;
  • Hydrogen leakage and diffusion;
  • Risk assessment of hydrogen energy equipment;
  • Technology for hydrogen storage and transportation;
  • Hydrogen energy equipment test, design, and manufacture.

We look forward to considering your submissions.

Prof. Dr. Jianjun Ye
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • hydrogen storage and transportation
  • hydrogen safety
  • risk assessment and control
  • leakage and diffusion
  • compression and evaporation
  • flow and heat transfer
  • hydrogen equipment design and test

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Published Papers (1 paper)

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Research

17 pages, 7070 KiB  
Article
Hydrogen Leakage Location Prediction in a Fuel Cell System of Skid-Mounted Hydrogen Refueling Stations
by Leiqi Zhang, Qiliang Wu, Min Liu, Hao Chen, Dianji Wang, Xuefang Li and Qingxin Ba
Energies 2025, 18(2), 228; https://doi.org/10.3390/en18020228 - 7 Jan 2025
Cited by 1 | Viewed by 660
Abstract
Hydrogen safety is a critical issue during the construction and development of the hydrogen energy industry. Hydrogen refueling stations play a pivotal role in the hydrogen energy chain. In the event of an accidental hydrogen leak at a hydrogen refueling station, the ability [...] Read more.
Hydrogen safety is a critical issue during the construction and development of the hydrogen energy industry. Hydrogen refueling stations play a pivotal role in the hydrogen energy chain. In the event of an accidental hydrogen leak at a hydrogen refueling station, the ability to quickly predict the leakage location is crucial for taking immediate and effective measures to prevent disastrous consequences. Therefore, the development of precise and efficient technologies to predict leakage locations is vital for the safe and stable operation of hydrogen refueling stations. This paper studied the localization technology of high-risk leakage locations in the fuel cell system of a skid-mounted hydrogen refueling station. The hydrogen leakage and diffusion processes in the fuel cell system were predicted using CFD simulations, and the hydrogen concentration data at various monitoring points were obtained. Then, a multilayer feedforward neural network was developed to predict leakage locations using simulated concentration data as training samples. After multiple adjustments to the network structure and hyperparameters, a final model with two hidden layers was selected. Each hidden layer consisted of 10 neurons. The hyperparameters included a learning rate of 0.0001, a batch size of 32, and 10-fold cross-validation. The Softmax classifier and Adam optimizer were used, with a training set for 1500 epochs. The results show that the algorithm can predict leakage locations not included in the training set. The accuracy achieved by the model was 95%. This approach addresses the limitations of sensor detection in accurately locating leaks and mitigates the risks associated with manual inspections. This paper provides a feasible method for locating hydrogen leakage in hydrogen energy application scenarios. Full article
(This article belongs to the Special Issue Improving Hydrogen Safety for Energy Applications)
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