锂电池PSE认证

日本作为全球电池产品重要的生产和出口国,对电池产品的安全性能尤为关注.2006年夏天发生的某品牌笔记本电池起火、冒烟,事件经调查源于日本厂家生产的问题电池.     

解读日本锂电池PSE认证规则

一、日本锂电池PSE认证规则1.适用范围日本锂电池PSE认证主要适用于日本<电器用品安全法>中规定的锂离子蓄电池,即体积能量密度不低于400Wh/L的锂离子蓄电池的组电池及单电池的安全性试验.     

浅谈电气产品PSE认证的规则与流程

日本作为第三大经济体国家,是中国电气产品的主要进口国之一,但电气产品在日本《电气用品安全法》下的PSE认证制度还较为封闭,很多国内电气产品出口和生产企业不熟悉PSE认证的规则与流程,为帮助国内企业能高效便捷的取得PSE认证,有必要详细介绍电气产品的PSE认证规则与流程以供各出口日本企业参考。     

Analysis of boundary layer control by heat transfer strips using an asymptotic approach to the PSE

The effect of heating strips on the stability of boundary layer flow over a flat plate is investigated. Heating strips alter the flow stability through the temperature dependence of the fluid properties. A stability study is carried out using the parabolized stability equations (PSE) that calculates the effects of temperature dependent fluid properties in terms of asymptotic expansions based on the total heat input. The leading order influence is obtained as a general result and, for the particular Prandtl number taken, is independent of any special set of property laws. In a fluid for which the intrinsic viscosity increases with temperature and the density decreases with temperature (such as air) the results show that the optimal location for a heating strip to stabilise the flow is upstream of the neutral point. The optimal location moves further upstream as the total heat input level is increased. For a given heat input widening the heating strip further stabilises the flow. Finally, the potential of the asymptotic method as a tool for further analysis of the flow is discussed.