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核安全级DI&C系统平台的安全性和可靠性分析方法的探索
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作者 秦宇 张亚栋 尹宝娟 《自动化博览》 2012年第12期70-74,共5页
目前国内外的法规、标准和研究的对象基本上都是核安全级数字化仪控(DI&C)系统,对核安全级DI&C系统平台的安全性和可靠性分析缺乏足够的指导。本文对比了DI&C系统和DI&C系统平台,然后根据DI&C系统的安全性和可靠性... 目前国内外的法规、标准和研究的对象基本上都是核安全级数字化仪控(DI&C)系统,对核安全级DI&C系统平台的安全性和可靠性分析缺乏足够的指导。本文对比了DI&C系统和DI&C系统平台,然后根据DI&C系统的安全性和可靠性分析的研究现状,建立了适用于DI&C系统平台的安全性和可靠性分析体系,并说明了DI&C系统平台应用于以确定对象为目标的DI&C系统的限制条件。本文为核安全级DI&C系统平台的安全性和可靠性分析工作提供了技术支持。 展开更多
关键词 安全级仪控系统平台 仪控系统 安全性和可靠性分析
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Techno-Economic Challenges of Fuel Cell Commercialization 被引量:13
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作者 Junyewang Hualin Wang Yi Fan 《Engineering》 2018年第3期352-360,共9页
As resource scarcity, extreme climate change, and pollution levels increase, economic growth must rely on more environmentally friendly and efficient production processes, Fuel cells are an ideal alternative to intern... As resource scarcity, extreme climate change, and pollution levels increase, economic growth must rely on more environmentally friendly and efficient production processes, Fuel cells are an ideal alternative to internal combustion (IC) engines and boilers on the path to greener industries because of their high effi- ciency and environmentally friendly operation, However, as a new energy technology, significant market penetration of fuel cells has not yet been achieved, In this paper, we perform a techno-economic and environmental analysis of fuel cell systems using life cycle and value chain activities, First, we investigate the procedure of fuel cell development and identify what activities should he undertaken according to fuel cell life cycle activities, value chain activities, and end-user acceptance criteria, Next, we present a unified learning of the institutional barriers in fuel cell commercialization, The primary end-user accep- tance criteria are function, cost, and reliability; a fuel cell should outperform these criteria compared with its competitors, such as IC engines and batteries, to achieve a competitive advantage, The repair and maintenance costs of fuel cells (due to low reliability) can lead to a substantial cost increase and decrease in availability, which are the major factors for end-user acceptance, The fuel cell industry must face the challenge of how to overcome this reliability barrier, This paper provides a deeper insight into our work over the years on the main barriers to fuel cell commercialization, and discusses the potential pivotal role of fuel cells in a future low-carbon green economy, It also identifies the needs and points out some direc- tions for this future low-carbon economy, Green energy, supplied with fuel cells, is truly the business mode of the future, Striving for a more sustainable development of economic growth by adopting green public investments and implementing policy initiatives encourages environmentally responsible indus- trial investments. 展开更多
关键词 Energy security Fuel cells Cost analysis Durability and reliability Energy storage
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