Analysis of internal energy and mass loss rate of fuel with water sublayer at different initial temperatures

Cong Li, Wenbo Xu, Yuqing Wang, Yanke Jin, Shanyang Wei and Rui Yang

Energy, 2023, vol. 283, issue C

Abstract: This study primarily investigates fuel spill fire accidents occurring on water. A series of pool fire experiments with water sublayer at different initial temperatures (5, 10, 20, 40, 60, and 80 °C) and fuel thicknesses (0.5, 1.0, 1.5, and 2.0 cm) is conducted. The mass loss rate (MLR), and temperatures of fuel and water sublayer were measured, and the internal energy of fuel and water sublayer was analyzed. Results showed that the division of combustion stage depends on the fuel thickness and initial temperatures. The temperatures of fuel and water sublayer exhibited a gradient distribution at different heights. The fuel energy flux q˙fuel and water sublayer energy flux q˙water initially increased and then decreased. The peak values of q˙fuel, q˙water, Q˙fuel, and Q˙water were negatively correlated with the initial temperature at the same fuel thickness. The MLR of the stable stage was increasing with the thicker fuel thickness and higher initial temperature. Finally, a dimensionless correlation as a function of the geometric and thermodynamic properties of the pool and fuel was introduced to predict the mean MLR, and the experimental data presented a good correlation with the predictions. The conclusions would be benefited to understand the phenomenon and quantitative characteristics of pool fire accidents on water.

Keywords: Pool fire; Initial temperature; Fuel thickness; Mass loss rate (MLR); Internal energy (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:283:y:2023:i:c:s0360544223024313

DOI: 10.1016/j.energy.2023.129037

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