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基于BIM建模和人工神经网络的快/慢速火灾识别方法

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智能建筑电气技术 2024年第3期18卷 47-51页

作者：刘畅王张舒君张恩茂张涵清韩宇王艳敏中设数字技术有限公司北京100043 哈尔滨工业大学电气工程及自动化学院哈尔滨150001 中国建筑设计研究院有限公司北京100044 哈尔滨哈飞建筑安装工程有限责任公司哈尔滨150060

通过BIM建模技术和神经网络方法,本文提出了一种适用于快/慢火灾识别的新算法。建立该建筑的BIM模型,针对模型进行FDS火灾数值模拟,获取建筑中各种火情的仿真数据;继而基于BP神经网络方法,对FDS数据进行训练分析,实现对火灾信息的提取... 详细信息

通过BIM建模技术和神经网络方法,本文提出了一种适用于快/慢火灾识别的新算法。建立该建筑的BIM模型,针对模型进行FDS火灾数值模拟,获取建筑中各种火情的仿真数据;继而基于BP神经网络方法,对FDS数据进行训练分析,实现对火灾信息的提取。最后,分别选取休闲区为例的小空间慢速火燃烧和化妆室为例的小空间快速火燃烧两种情况进行火灾模拟,以验证本文所提方法的正确性和有效性。

关键词：神经网络 BIM FDS 火灾模拟火情判断

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基于试验测试的光伏阵列建模与发电量估算

智能建筑电气技术 2024年第2期18卷 79-82,108页

作者：张恩茂张涵清韩宇宁佳铭王艳敏中国建筑设计研究院有限公司北京100044 哈尔滨工业大学电气工程及自动化学院哈尔滨150001 哈尔滨哈飞建筑安装工程有限责任公司哈尔滨150066

本文以建筑光伏一体化系统作为研究对象,计及光伏板受内部材料和温度、光照等外部条件对其输出电压和电流的影响,建立光伏板的准确数学模型;并基于实际光伏板的测试性能,着重研究光伏阵列的串并联计算、光伏阵列的建模和发电量估算三个... 详细信息

本文以建筑光伏一体化系统作为研究对象,计及光伏板受内部材料和温度、光照等外部条件对其输出电压和电流的影响,建立光伏板的准确数学模型;并基于实际光伏板的测试性能,着重研究光伏阵列的串并联计算、光伏阵列的建模和发电量估算三个关键问题。通过数值仿真验证方法的正确性和有效性。

关键词：建筑光伏一体化系统光伏光伏阵列发电量估算

P-band center theory guided activation of MoS_(2) basal S sites for pHuniversal hydrogen evolution

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Nano Research 2023年第5期16卷 6228-6236页

作者： Chao Meng Yuanfeng Gao Yue Zhou Kang Sun yanmin wang Ye Han Qianqian Zhao Xuemin Chen Han Hu Mingbo Wu State Key Laboratory of Heavy Oil Processing Institute of New EnergyChina University of Petroleum(East China)Qingdao 266580China College of Electrical Engineering and Automation Shandong University of Science and TechnologyQingdao 266590China College of Energy Storage Technology Shandong University of Science and TechnologyQingdao 266590China Institute of Chemical Industry of Forest Products Chinese Academy of ForestryNanjing 210042China School of Materials Science and Engineering Shandong University of Science and TechnologyQingdao 266590China College of Science Hebei University of Science and TechnologyShijiazhuang 050018China

The edge S sites of thermodynamically stable 2H MoS_(2)are active for hydrogen evolution reaction(HER)but the active sites are *** the dominance of the basal S sites,they are generally inert to HER because of the low p-band ***,we reported a synergistic combination of phase engineering and NH_(4)^(+) intercalation to promote the HER performance of MoS_(2).The rational combination of 1T and 2H phases raises the p-band center of the basal S sites while the intercalated NH4+ions further optimize and stabilize the electronic band of these *** S sites with regulated band structures afford moderate hydrogen adsorption,thus contributing to excellent HER performance over a wide pH *** an acid medium,this catalyst exhibits a low overpotential of 169 mV at 10 mA·cm^(−2)and Tafel slope of 39 mV·dec^(−1)with robust stability,superior to most of recently reported MoS_(2)-based non-noble *** combined use of in/ex-situ characterizations ravels that the appearance of more unpaired electrons at the Mo 4d-orbital reduces the d-band center which upshifts the p-band center of the adjacent S for essentially improved HER *** work provides guidelines for the future development of layered transition-metal-dichalcogenide catalysts.

关键词： molybdenum disulfide p-orbital electron structure basal S sites hydrogen evolution synergistic mechanism

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基于ETAP的光伏离网发电系统的稳态分析

智能建筑电气技术 2024年第1期18卷 100-103页

作者：张恩茂张涵清韩宇袁世博王艳敏中国建筑设计研究院有限公司北京100044 哈尔滨工业大学电气工程及自动化学院哈尔滨150001 哈尔滨哈飞建筑安装工程有限责任公司哈尔滨150001

本文针对某建筑中的某一离网光伏发电系统,采用ETAP电力系统仿真软件对其稳定性进行仿真分析。建立该系统的单线图模型,研究光伏电源容量的变化对电力系统稳态性能的影响,通过不同光伏渗透率下系统的潮流分析,获取稳态时系统的电压电流... 详细信息

本文针对某建筑中的某一离网光伏发电系统,采用ETAP电力系统仿真软件对其稳定性进行仿真分析。建立该系统的单线图模型,研究光伏电源容量的变化对电力系统稳态性能的影响,通过不同光伏渗透率下系统的潮流分析,获取稳态时系统的电压电流与功率分布和短路时的暂态电流,进而实现对该离网光伏发电系统的稳定性分析。相较于传统Matlab仿真更加的简洁,对系统级别的数值模拟更加贴合实际,仿真结果可验证本文所提方法的正确性和有效性。

关键词：光伏系统光伏离网发电系统 ETAP 潮流分析短路计算

Progress in the research on organic piezoelectric catalysts for dye decomposition

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International Journal of Minerals,Metallurgy and Materials 2024年第2期31卷 245-260页

作者： Zhaoning Yang Xiaoxin Shu Di Guo Jing wang Hui Bian yanmin Jia School of Science Xi’an University of Posts and TelecommunicationsXi’an 710121China School of Physics and Information Technology Shaanxi Normal UniversityXi’an 710119China

Organic contaminants have posed a direct and substantial risk to human wellness and the *** recent years,piezo-electric catalysis has evolved as a novel and effective method for decomposing these *** piezoelectric materials offer a wide range of options,most related studies thus far have focused on inorganic materials and have paid little attention to organic *** materials have advantages,such as being lightweight,inexpensive,and easy to process,over inorganic ***,this paper provides a comprehensive review of the progress made in the research on piezoelectric catalysis using organic materials,high-lighting their catalytic efficiency in addressing various *** addition,the applications of organic materials in piezoelectric cata-lysis for water decomposition to produce hydrogen,disinfect bacteria,treat tumors,and reduce carbon dioxide are ***,fu-ture developmental trends regarding the piezoelectric catalytic potential of organic materials are explored.

关键词： piezoelectric catalysis piezoelectric material dye decomposition organic materials

A Foreword from the Editor-in-Chief

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Organic Polymer Material Research 2019年第1期1卷 1-2页

作者： yanmin wang Shandong University of Science and Technology China

Accompanying the development of petrochemical industry,great progress has been achieved in the organic polymer *** is well known that the conventional polymer materials usually consist of organosilicon polymers,polycarbonates,polyethylene,polyamide,polyurethane,polysulfone,phenolic resin and so *** their synthesis and applications have been well developed,the further research on them still has great ***,natural polymers such as polysaccharides,tannins,cellulose also occupy an important position in the family of the organic polymer materials.

关键词： materials. polymer polyurethane

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含不同落差断层深部煤层开采围岩稳定性研究

煤炭技术 2024年第9期43卷 88-96页

作者：詹召伟王彦敏高超王传晨彭瑞姜士源杨学红济宁矿业集团有限公司霄云煤矿山东济宁272000 华北科技学院安全工程学院河北廊坊065201 华北科技学院矿山安全学院河北廊坊065201

随煤炭开采深度不断加大,煤矿隐含断层及其分叉点多等问题愈发严重。以山东某矿井为背景,采用数值模拟和理论分析相结合的研究方法,建立了存在不同落差断层情况下的煤层开采模型,研究了工作面开采超前影响范围与不同落差断层之间的关系... 详细信息

随煤炭开采深度不断加大,煤矿隐含断层及其分叉点多等问题愈发严重。以山东某矿井为背景,采用数值模拟和理论分析相结合的研究方法,建立了存在不同落差断层情况下的煤层开采模型,研究了工作面开采超前影响范围与不同落差断层之间的关系。结果表明:随着断层落差的减小,断层对围岩应力分布及变形的影响范围逐渐减小;当回采工作面未穿过断层时,运输巷支承压力呈“V”形分布,回采工作面穿过断层以后,上下顺槽支承压力随着切眼距离的增大逐渐减小,应力集中系数明显降低,上下顺槽应力集中系数均小于2,上下顺槽的应力主要受采动压力的影响。研究结论可为地质状况相似矿井超前支护范围设计提供指导。

关键词：高应力不同落差断层数值模拟超前支护

Extended light absorption and accelerated charge migration in ultrathin twisted carbon nitride nanoplates for efficient solar hydrogen production

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Science China Chemistry 2024年第7期67卷 2215-2223页

作者： yanmin Zou Shiyao Li Dandan Zheng Jianyong Feng Sibo wang Yidong Hou Guigang Zhang State Key Laboratory of Photocatalysis on Energy and Environment College of ChemistryFuzhou UniversityFuzhou 350108China College of Environment and Safety Engineering Fuzhou UniversityFuzhou 350108China Collaborative Innovation Center of Advanced Microstructures National Laboratory of Solid State MicrostructuresCollege of Engineering and Applied SciencesNanjing UniversityNanjing 210093China

Polymeric carbon nitride has been widely developed as a promising photocatalyst for solar hydrogen production via photocatalytic water ***,pristine carbon nitride prepared by traditional solid-state polymerization usually encounters issues such as rapid carrier recombination and insufficient absorption of visible light below 460 ***,poly(heptazine imide)with a distinctive nanoplate structure was synthesized in a binary molten salt of NaCl–CaCl_(2).The salt template allows the formation of the thin nanoplate structure,which promotes the charge separation and ***,the intercalation of Ca^(2+)ions between the conjugated layers endows the activation of n–π*electron transition due to the distortion of in-plane heptazine ***,the optimized poly(heptazine imide)nanoplates achieve an apparent quantum efficiency of up to 17.3%at 500 nm for photocatalytic hydrogen production from *** work shares new idea for rational control of the optical absorption and charge carrier dynamics of poly(heptazine imide).

关键词： photocatalysis poly heptazine imide nanoplates ion intercalation hydrogen production

基于室温监测反馈的集中供热按需调控技术研究

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暖通空调 2024年第10期54卷 44-51页

作者：王延敏李志伟刘俊杰孟晗朱咏梅郎晋东王伟天津大学室内空气环境质量控制天津市重点实验室天津大连海心信息工程有限公司大连兰州交通大学兰州天津市热电有限公司天津

集中供热收费的计量单位为供热面积,在这种计量模式下,供热合格与否的判断指标不是用热量,而是热用户的热舒适性。本文提出了一种以监测反馈室温作为按需供热抓手的分时分区按需供热精准调控技术,在研究分析供热管网宽幅调节、精准输配... 详细信息

集中供热收费的计量单位为供热面积,在这种计量模式下,供热合格与否的判断指标不是用热量,而是热用户的热舒适性。本文提出了一种以监测反馈室温作为按需供热抓手的分时分区按需供热精准调控技术,在研究分析供热管网宽幅调节、精准输配机制基础上,分析了室温变化规律和热网延时特性,确定了调控目标和技术可行性。为进一步体现室温的综合特性,确定了室温采集传感器数量计算式和空间部署原则,开发了换热站有效室温计算方法,提出了一种结合预测室外气象参数、基于有效室温的反馈值和设定值偏差的预测反馈控制方法和自控逻辑。工程实践表明,该技术不仅能提升用热质量,还能较大幅度地降低热耗。

关键词：集中供热按需供热室温监测按需调控延时特性预测反馈