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计及气体成分变化的电-气-热综合能源系统能量流计算方法 [PDF]

open access: yes全球能源互联网, 2022
为实现“双碳”目标,缓解环境压力,综合能源系统(integrated energy system,IES)已成为能源转型的重要发展方向之一。考虑到电转气(power-to-gas,P2G)技术引入的氢气、合成天然气等多类型供气源混合的问题,传统的IES能量流计算已无法确定混合后的燃气品质是否达标,无法量化其对IES中的节点压力、电压等参数影响。为此,提出了一种计及气体成分变化的电-气-热综合能源系统能量流计算方法。首先,将气体相对密度和热值建模为迭代变量 ...
黄雨佳, 孙秋野*, 王睿, 姚葭
doaj   +1 more source

电力—天然气耦合系统建模与规划运行研究综述 [PDF]

open access: yes全球能源互联网, 2020
随着燃气机组的广泛应用和电转气技术的快速发展,电力系统与天然气系统之间的互动日益密切,电力-天然气耦合系统是在该背景下形成的用于描述两个能源系统紧密耦合的系统形式。该耦合系统除了具有两个能源系统分别的运行特性和安全约束外,还因系统间的耦合互动产生了新的特点和约束,亟需新的分析和控制方法,近年来已经获得了国内外众多专家学者的关注和深入研究。文章从电力-天然气耦合系统的建模仿真、优化规划、运行分析(优化调度、安全评估)的角度对当前的主要研究成果进行了综述,同时总结了目前国内外学者对耦合市场的探索 ...
乔铮, 郭庆来, 孙宏斌
doaj   +1 more source

Study on flutter characteristics of NACA0012 flexible straight wing with high-aspect-ratio

open access: yesXibei Gongye Daxue Xuebao, 2022
采用三维雷诺平均N-S方程和S-A湍流模型求解展弦比为16的NACA0012弹性平直机翼的非定常气动力, 结合机翼动力学方程, 建立了机翼颤振时域分析方法。利用该方法对机翼的颤振特性、颤振过程中的变形和振动响应, 以及瞬时流场进行数值模拟和分析, 并研究材料刚度和密度对机翼颤振速度和频率的影响。结果表明, 由于展弦比较大, 且材质轻柔, 机翼会出现一定幅度的静弯曲变形。第二阶(垂向弯曲)和第三阶(扭转)振动模态的耦合作用是机翼发生颤振的原因, 且颤振频率介于这两阶模态固有频率之间 ...
YU Qiuyang   +3 more
doaj   +1 more source

酸化解聚—ICP—AES法测定聚氯化铝中的有害元素

open access: yesGongye shui chuli, 2020
建立了一种酸化解聚—电感耦合等离子体原子发射光谱仪快速同步测定聚氯化铝中的砷、镉、铬、铜、铁、汞、锰、镍、铅、锑、硒、锌元素的方法。通过对各元素谱线的优化,可以有效去除基体、波长等干扰。对该测定方法的检出限、精密度、回收率进行分析,结果表明:各元素的检出限在0.040~2.06 μg/g,精密度在0.146%~4.63%,回收率在83.8%~110%。该方法具有操作简单、快速准确等优点,适于聚氯化铝水处理剂中多种有害元素的测定。
石瑞瑞   +5 more
doaj   +2 more sources

Constructing Integrative Catalytic Pairs in Carbon Nanohorns for Enhanced Neutral H2O2 Electrosynthesis

open access: yesRare Metals, Volume 45, Issue 9, September 2026.
ABSTRACT Electrosynthesis of hydrogen peroxide (H2O2) via the two‐electron oxygen reduction reaction (2e−ORR) offers a sustainable and decentralized alternative to the anthraquinone process. However, conventional solo‐active‐site catalysts are intrinsically limited by scaling relationships, imposing a trade‐off between activity and selectivity.
Yiqi Ding   +12 more
wiley   +1 more source

Synergistic Hydrogen Evolution and Methanol Oxidation Over BiOIO3/Zn3In2S6 Heterojunction Photocatalyst via Interfacial Charge Steering

open access: yesRare Metals, Volume 45, Issue 7, July 2026.
ABSTRACT Because of superior transportability and high energy capacity, methanol is regarded as a potential hydrogen carrier. Photocatalytic methanol dehydrogenation offers a sustainable and cost‐effective method for releasing hydrogen. Conventional photocatalysts face challenging obstacles, including the low catalytic efficiency and rapid ...
Rundong Chen   +9 more
wiley   +1 more source

Multiscale Simulation‐Driven Micro‐Bubble Bottom‐Blowing Electrolysis Toward High‐Efficiency Titanium Scrap Recycling

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT The large‐scale application of titanium is limited by its high production costs, as well as its low utilization and recycling rates. Therefore, efficient recovery of titanium scrap offers a viable pathway to reduce its cost. Molten‐salt electrolysis offers a promising route for upcycling titanium scrap, but the conventional method, which ...
Haoyu Fang   +4 more
wiley   +1 more source

In Situ Fabrication of Sulfate‐Grafted Mo‐Doped NiOOH for Electrocatalytic Methanol Oxidation Coupled With Hydrogen Production at Industrial‐Level Current Density

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Developing efficient and sustainable energy conversion technologies is crucial for addressing the global energy and environmental challenges. As a promising clean energy conversion strategy, the electrocatalytic methanol oxidation coupled with cathodic hydrogen production provides a pivotal path to solve the above problems.
Tao Chen   +4 more
wiley   +1 more source

一种新的多级混沌同步保密通信系统的研究

open access: yes四川大学学报. 自然科学版, 2012
以Lyapunov稳定性理论为基础,研究了一种三个耦合的恒等系统的全局同步的方法.通过选取适当的耦合参数,使得三个耦合的混沌系统达到同步.基于混沌遮掩的方法,把这种同步方案应用到保密通信.利用三个耦合的恒等系统,提出了一种二次加密方法,在前两个耦合的系统中加密后,利用后两个耦合系统再一次加密.通过加入随机白噪声干扰,对多级混沌保密通信系统进行噪声干扰分析和计算,并用小波分析理论对加噪信号进行处理.仿真结果表明,含有噪声的有用信号经小波理论处理后,可以很快无失真地恢复过来.
安新磊, 张莉, 俞建宁, 张建刚
doaj  

耗散介观电容电阻电感耦合电路的量子化(英文)

open access: yes四川大学学报. 自然科学版, 2008
本文从介观电路中经典运动方程出发,运用正则变换的方法研究耗散介观电容电阻电感耦合电路的量子化问题,结果表明其哈密顿量等价于两个独立的谐振子的哈密顿量之和.
张玉强   +3 more
doaj  

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