研究概况在合适的环境条件下,风力助推船(下称风船)比常规的动力驱动船具有明显的节油效果和小的污染。在丹麦环境能源部的资助下,丹麦造船咨询公司Knud E Hansen A/S,自1995年,开始致力于风船项目研究,探讨了在现代商船上利用风力的可...研究概况在合适的环境条件下,风力助推船(下称风船)比常规的动力驱动船具有明显的节油效果和小的污染。在丹麦环境能源部的资助下,丹麦造船咨询公司Knud E Hansen A/S,自1995年,开始致力于风船项目研究,探讨了在现代商船上利用风力的可行性,为风船注入了新的生命活力。在项目研究的第一阶段。展开更多
Using a 20 L spherical explosion suppressing test system, the largest gas explosion pressure and maximum pressure rising rate with additives of ultra-fine ABC dry powder and diatomite powder were tested and compared, ...Using a 20 L spherical explosion suppressing test system, the largest gas explosion pressure and maximum pressure rising rate with additives of ultra-fine ABC dry powder and diatomite powder were tested and compared, and the explosion suppression effect of the two kinds of powder was analyzed. Experimental results show that both powders can suppress gas ex- plosion and ABC dry powder is superior to diatomite powder. Adding two powders under the same experimental conditions, when methane concentration is 7.0%, the maximum explosion pressure decreased 39% and 4%, respectively, while the rising rate of the maximum pressure decreased 80% and 53%, respectively. When methane concentration is 9.5%, the maximum ex- plosion pressure decreased 14% and 12%, respectively, the rising rate of maximum pressure decreased 62% and 27%, respec- tively, the maximum explosion pressure decreased 23% and 18%, respectively, while the rising rate of the maximum pressure decreased 77% and 70%, respectively. When methane concentration is 12.0%, the explosion suppression effect of ultra-fine ABC dry powder is not affected by the methane concentration, and the explosion suppression effect of diatomite powder under high methane concentrations is more obvious.展开更多
文摘研究概况在合适的环境条件下,风力助推船(下称风船)比常规的动力驱动船具有明显的节油效果和小的污染。在丹麦环境能源部的资助下,丹麦造船咨询公司Knud E Hansen A/S,自1995年,开始致力于风船项目研究,探讨了在现代商船上利用风力的可行性,为风船注入了新的生命活力。在项目研究的第一阶段。
基金Supported by the Natural Science Foundation of China （50904049） the Development Fund Project of Xi＇an University of Science and Technology （2010047） the Shaanxi Provincial Scientific and Technological Fund （2010KJXX-08）
文摘Using a 20 L spherical explosion suppressing test system, the largest gas explosion pressure and maximum pressure rising rate with additives of ultra-fine ABC dry powder and diatomite powder were tested and compared, and the explosion suppression effect of the two kinds of powder was analyzed. Experimental results show that both powders can suppress gas ex- plosion and ABC dry powder is superior to diatomite powder. Adding two powders under the same experimental conditions, when methane concentration is 7.0%, the maximum explosion pressure decreased 39% and 4%, respectively, while the rising rate of the maximum pressure decreased 80% and 53%, respectively. When methane concentration is 9.5%, the maximum ex- plosion pressure decreased 14% and 12%, respectively, the rising rate of maximum pressure decreased 62% and 27%, respec- tively, the maximum explosion pressure decreased 23% and 18%, respectively, while the rising rate of the maximum pressure decreased 77% and 70%, respectively. When methane concentration is 12.0%, the explosion suppression effect of ultra-fine ABC dry powder is not affected by the methane concentration, and the explosion suppression effect of diatomite powder under high methane concentrations is more obvious.
