Release of high-pressure hydrogen from type III tank in a fire scenario: Analysis and prediction of jet flame length and thermal response characteristics

IF 7.5 1区工程技术 Q2 ENERGY & FUELS

Fuel Pub Date : 2024-06-12 DOI:10.1016/j.fuel.2024.132153

Linzhi Zou , Bei Li , Bing Han , Yan Liu , Xueying Wang , Mingshu Bi , Chi-Min Shu

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Abstract

In this paper, the thermal response and jet flame behaviour of a typical type III high-pressure hydrogen storage tank with nominal working pressure (NWP) and volume of 70 MPa and 48 L were analysed at fire scenarios. The tank was discharged at a critical internal pressure 77.4 MPa, which was ca. 110 % of NWP. The pressure drop rates of type III tanks were greater than 1 MPa/s during the initial 15 s after venting. The length and width of jet flame were 4.93 and 1.65 m at the critical moment, which fluctuated downward over time. A thermokinetic model was employed to predict the variation of hydrogen gas state parameters and the maximum length of jet flame. The calculation results indicated that the maximum flame length of hydrogen released from a valve of 2 mm was around 2–6.5 m under a pressure range of 10–80 MPa. The error between the predicted results and the experimental values was less than 5 %. It was found that the flame length was enlarged by an increase of aperture. The length of flame increased by 6 m after the aperture changed from 2 to 5.08 mm at the equivalent pressure.

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火灾情况下 III 型储罐释放高压氢气：喷射火焰长度和热反应特性的分析与预测

本文分析了一个典型的 III 型高压储氢罐在火灾情况下的热反应和喷射火焰行为，该储氢罐的额定工作压力（NWP）和容积分别为 70 兆帕和 48 升。储氢罐在临界内部压力 77.4 兆帕，约为标称工作压力的 110% 时排出。在排气后的最初 15 秒内，III 型罐体的压降速率大于 1 兆帕/秒。在临界时刻，喷射火焰的长度和宽度分别为 4.93 米和 1.65 米，并随时间向下波动。采用热动力学模型预测了氢气状态参数和喷射火焰最大长度的变化。计算结果表明，在 10-80 兆帕的压力范围内，2 毫米阀门释放的氢气的最大火焰长度约为 2-6.5 米。预测结果与实验值的误差小于 5%。研究发现，火焰长度随着孔径的增大而增大。在等效压力下，孔径从 2 毫米变为 5.08 毫米后，火焰长度增加了 6 米。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Fuel 工程技术-工程：化工

CiteScore

12.80

自引率

20.30%

发文量

3506

审稿时长

64 days

期刊介绍： The exploration of energy sources remains a critical matter of study. For the past nine decades, fuel has consistently held the forefront in primary research efforts within the field of energy science. This area of investigation encompasses a wide range of subjects, with a particular emphasis on emerging concerns like environmental factors and pollution.