Life cycle cost analysis of electricity storage facilities in flexible power systems

Global efforts towards de-carbonization have opened the pathway for a test environment of electrical energy storage (EES) topology. In this work, the feasibility of 17 EES facilities applied to 24 individual applications of flexible power networks has been investigated in terms of levelized cost of storage (LCOS) in $/kW. Electricity storage facilities were modelled and evaluated via a life-cycle cost analysis, based on the most realistic EES characteristics and practical applications’ requirements. The results showed that pumped-hydro constitutes the least-cost and most reliable system for large-scale/long-duration applications. Zn-air and vanadium redox (VRB) offer great potential in demand-shifting and reactive support but, due to their wide LCOS range, considerable risk is added in such an investment. Electrochemical double-layer capacitor (EDLC) holds almost the exclusivity in fast-response/frequently-cycled applications, while for medium-term/medium-scale applications and where the large footprint is a prohibitive factor, valve-regulated Pb-acid (VRLA) and hydrogen fuel cells (H₂-FC) are more favourable options. However, efficient tools still lack the ability of quantifying all benefits derived from electricity storage, maintaining stakeholders’ concerns for investment. It is apparent that, further research and development implies the decrease of the uncertainty governing the majority of EES technologies, increasing EES implementations and vice versa.     

Life-Cycle Assessment: Reducing Environmental Impact Risk with Workflow Data You Can Trust

How can architects offer proof of their proposals' ‘green’ credentials? The answer – as advocated by John Cays , Associate Dean of the New Jersey Institute of Technology's College of Architecture and Design – is through life-cycle assessment (LCA). Here he explains what it is, tracing its evolution over some six decades. He goes on to describe how design firms are partnering with software developers to create LCA tools that work alongside building information modelling to generate reliable data on their projects' ecological profiles.     

一个新的研究领域——生态环境材料

生态环境材料是最近几年提出来的一个材料研究新领域。本文简要介绍了生态环境材料概念的提出,它的紧迫性和必要性,目前的研究动向以及材料生态循环评估（ＬＣＡ）等方面的情况。     

Test strategy planning using economic analysis

This article will discuss the impact on testing of life-cycle costs and present an approach for minimizing the overall life-cycle costs of a product by selecting the most economic test strategy at each stage. The selection of test strategy is based on a detailed economic analysis of the different test techniques available.     

工业机器人安全之生命周期风险评估

Xing Lin     

短生命周期特征产品的二级供应链定价博弈分析

针对短生命周期产品的供应链利润最大化问题,建立并分析了二级供应链上制造商和销售商之间的非合作和合作定价博弈模型,得出供应链系统在成员合作情形下才能达到利润最大化的结论,并探讨了合作利润的分配机制,证明了在长期博弈中成员之间通过合作达到双赢的可行性。     

刀具全生命周期管理过程建模与信息编码的研究

提出了刀具全生命周期管理的概念,将刀具全寿命周期管理划分为计划期、投入期、使用期、报废期四个阶段。利用IDEF0方法分析了刀具生命周期管理过程,并基于混合分类法和面向对象思想对刀具资源进行分类,建立了刀具资源信息模型。参照国内外编码准则,采用结合分类码与顺序码方法实现了刀具资源信息编码。     

输电线路全寿命周期设计理论方法

为了提高输电线路系统全寿命设计质量及管理措施,提高各项决策的科学性和合理性,使输电线路运行的可靠性与线路投资的经济性达到最优化,促进环境友好和资源节约,实现输电线路工程的可持续发展,从输电线路规划、设计、施工、运营、废除等全寿命周期的角度出发,通过线路工程实际运行情况的调查,对输电线路系统中导线、地线、绝缘子、金具、防...     

廿一世纪建筑结构设计和建造技术的发展动向

作者根据参加１９９８年７月世界结构工程师大会的体会,认为在廿一世纪的建筑结构设计和建造技术方面有以下一些值得注意的动向：１）功能设计;２）提高结构系统可靠度与防止连锁破坏;３）结构投资的合理分配;４）大跨空间结构建造技术;５）新材料与新结构;６）结构振动控制。     

通信设备生命周期管理探讨

本文主要对通信设备生命周期管理的定义,范畴和意义进行了探讨,对通信设备生命周期管理的特点和影响因素进行了分析,对设备生命周期与质量的关系进行了探讨,对中国移动传输设备技术平滑演进策略给出了建议.