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Energies 2018, 11(8), 2086;

Ventilation System Influence on Hydrogen Explosion Hazards in Industrial Lead-Acid Battery Rooms

Department of Chemical Engineering, Lodz University of Technology, Faculty of Process and Environmental Engineering, Stefana Zeromskiego 116, 90-924 Lodz, Poland
Received: 10 July 2018 / Revised: 27 July 2018 / Accepted: 3 August 2018 / Published: 10 August 2018
(This article belongs to the Section Energy Storage and Application)
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When charging most types of industrial lead-acid batteries, hydrogen gas is emitted. A large number of batteries, especially in relatively small areas/enclosures, and in the absence of an adequate ventilation system, may create an explosion hazard. This paper describes full scale tests, which demonstrate conditions that can occur in a battery room in the event of a ventilation system breakdown. Over the course of the tests, full scale hydrogen emission experiments were performed to study emission time and flammable cloud formation according to the assumed emission velocity. On this basis, the characteristics of dispersion of hydrogen in the battery room were obtained. The CFD model Fire Dynamic Simulator created by National Institute of Standards and Technology (NIST) was used for confirmation that the lack of ventilation in a battery room can be the cause of an explosive atmosphere developing, and leading to, a potential huge explosive hazard. It was demonstrated that different ventilation systems provide battery rooms with varying efficiencies of hydrogen removal. The most effective type appeared to be natural ventilation, which proved more effective than mechanical means. View Full-Text
Keywords: hydrogen; battery; ventilation; CFD modelling; explosion hydrogen; battery; ventilation; CFD modelling; explosion

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Brzezińska, D. Ventilation System Influence on Hydrogen Explosion Hazards in Industrial Lead-Acid Battery Rooms. Energies 2018, 11, 2086.

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