Investigation of burning rate and flame length of wall-attached energy storage pool fires with different aspect ratios below different ceiling heights

Cong Li, Yanke Jin, Wenbo Xu, Zequn He, Weiwang Chen and Shanyang Wei

Energy, 2025, vol. 334, issue C

Abstract: Fire accidents in energy storage pools can lead to disastrous consequences for sustainable development and life. This study experimentally investigated the influence ceiling height on the mass burning rate and flame length of rectangular wall-attached pool fires. A series of fire experiments were conducted using rectangular heptane pool fires, each with a constant area of 400 cm2, across varying aspect ratios (n = 1, 2, 3, 4, and 6) and ceiling heights (H = 0.4 m, 0.6 m, 0.8 m, ∞) are performed. Key parameters, including combustion dynamics, mass burning rate, thermal radiation, and flame height were systematically monitored. The temporal evolution of flame impingement, thermal feedback mechanisms, mass burning rate, and ceiling flame extension were comprehensively analysed. The findings indicated that the onset and duration of the first and sustained impingement of the flame on the ceiling were delayed as the aspect ratio increased. To quantify the relationship for the mass burning rate, a simplified power-law correlation equation was established, incorporating the new characteristic pool length, aspect ratio, and ceiling height. Furthermore, a new dimensionless heat release rate equation. It was experimentally to effectively capture the influence of ceiling height and mirror perimeter on the flame length. The results of this study contribute to the reduction of fire-related losses and support improved energy management.

Keywords: Wall-attached fire; Rectangular pool; Ceiling height; Flame impingement; Mass burning rate; Flame length (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:334:y:2025:i:c:s0360544225034310

DOI: 10.1016/j.energy.2025.137789

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