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Small scale experiment study on the characteristics of boilover.
作者:Kong, Depeng, Pengxiang Liu, Jiaqing Zhang, Minghao Fan, and Changfa Tao.
关键字:Boilover, Burning rate, Boilover stage, Flame height, Boilover onset time, Boilover intensity
论文来源:期刊
具体来源:Journal of Loss Prevention in the Process Industries* no. 48:101-110.
发表时间:2017年
Crude oil boilover fire was experimentally studied in an open fire test space. Three circular steel trays, with diameters of 0.1 m, 0.15 m and 0.2 m, filled with crude oil were used in the experiment. Three important measurements, namely, mass burning rate, flame height and fuel temperature distributions, were collected and recorded during the entire combustion process. The results show that the combustion process can be divided into four typical stages: the growth stage, quasi-steady stage, boilover stage and decay stage. It is observed that the mass burning rate and the flame height in the boilover stage are considerably higher than that in the quasi-steady stage. In the quasi-steady stage, the initial fuel layer thickness has a limited influence on the mass burning rate and the flame height, whereas in the boilover stage, the influence is substantial because of the boilover effect. In both stages, the mass burning rate and the flame height increase with increasing pool diameters. The two boilover characteristic parameters, boilover onset time and boilover intensity, both increase with the initial fuel layer thickness and decrease with the pool diameter. Based on the ratio of initial fuel layer thickness to the pool diameter, prediction models for boilover onset time and boilover intensity are developed.