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车载液氢瓶绝热性能和可靠性试验研究
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作者 王玉花 李玲 《中国科技期刊数据库 工业A》 2024年第7期0160-0164,共5页
车载液氢储供系统作为燃料电池汽车的燃料系统,装载到汽车前,要经过一系列严格的测试试验。液氢瓶是车载液氢储供系统的关键装备。本文对车载液氢瓶进行了绝热性能和可靠性试验验证,具体包括蒸发试验、泄漏试验和真空失效试验。蒸发试... 车载液氢储供系统作为燃料电池汽车的燃料系统,装载到汽车前,要经过一系列严格的测试试验。液氢瓶是车载液氢储供系统的关键装备。本文对车载液氢瓶进行了绝热性能和可靠性试验验证,具体包括蒸发试验、泄漏试验和真空失效试验。蒸发试验采用液氢介质,加注率90%,静置36h,测得日静态蒸发率为4.83%。泄漏试验采用正压气密方法,介质为氦气,试验压力为最高工作压力1.6MPa,采用涂液法进行检验,结果表明液氢瓶合格。真空失效试验在气瓶的真空夹层中充入绝对压力0.1MPa的氮气进行验证。本试验所采用的试验方法及试验结果可为今后车载液氢储供氢系统的开发优化以及性能试验验证提供参考。 展开更多
关键词 车载液氢 预期性能 液氢试验
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Hygrothermal Response of Coconut Fiber Reinforced Composites
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作者 Jamaliah Idns Chukwuekezie Christian Eyu Gaius 《Journal of Chemistry and Chemical Engineering》 2014年第10期950-954,共5页
The effects of moist and temperature response of coconut fibre reinforced composite have been studied. Tensile and compression tests for samples immersed in 12.5 g/dm3 sodium hydroxide solution and without sodium hydr... The effects of moist and temperature response of coconut fibre reinforced composite have been studied. Tensile and compression tests for samples immersed in 12.5 g/dm3 sodium hydroxide solution and without sodium hydroxide solution were performed using a universal testing machine (Monsanto tensometer). The results from the tensile test indicate that stress is fairly proportional to strain. However, the tensile strength increases (reduction in strain), as the soaking time increases for the treated composites. The untreated samples demonstrate reduced tensile strength compared to the treated composites under hygrothermal conditions. The conditioned samples in each case show better tensile and compressive strength compared to the untreated samples. The plant coconut fibres investigated demonstrate acceptable mechanical properties similar to the synthetic counterparts. 展开更多
关键词 FIBRE COCONUT tensile strength COMPOSITE polyester resins.
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