检索结果-南通市图书馆

计及特高压交流工程建设的区域碳减排测算及分摊

在线全文

学校读者我要写书评

暂无评论

中国电力 2024年第7期57卷 163-172页

作者：王硕霍慧娟徐丹郄鑫辛诚李薇薇段婧国网经济技术研究院有限公司北京102209 国家电网有限公司北京100031

在“双碳”目标下,特高压交流工程凭借其先进的技术手段,在消纳清洁能源、降低传输损失方面将发挥更大作用,但对特高压交流工程减碳效益的研究较少。以负荷落点区域为研究对象,提出了特高压交流工程运行减碳效益的量化方法。首先,对送... 详细信息

在“双碳”目标下,特高压交流工程凭借其先进的技术手段,在消纳清洁能源、降低传输损失方面将发挥更大作用,但对特高压交流工程减碳效益的研究较少。以负荷落点区域为研究对象,提出了特高压交流工程运行减碳效益的量化方法。首先,对送受两端电力潮流分布进行模拟计算,确定输电通道潮流比例;其次,对电源区域进行电量平衡分析,确定工程输送清洁能源电量,结合碳排放因子测算负荷区域碳减排量,利用Shapley值根据贡献度计算工程的减碳效益;最后,以实际工程为例进行算例分析。结果表明,特高压交流工程能够通过提升清洁能源消纳能力减少碳排放。

关键词：特高压交流工程时序生产模拟潮流分析 Shapley值

Investigating Lightning Characteristics through a Supercell Storm by Comprehensive Coordinated Observations over North China

在线全文

学校读者我要写书评

暂无评论

Advances in Atmospheric Sciences 2020年第8期37卷 861-872页

作者： Dongxia LIU Xiushu qie Yichen CHEN Zhuling SUN Shanfeng YUAN Key Laboratory of Middle Atmosphere and Global Environment Observation(LAGEO) Institute of Atmospheric PhysicsChina Academy ScienceBeijing 100029China State Key Laboratory of Severe Weather Chinese Academy of Meteorological SciencesBeijing 100081China Beijing Weather Modification Office Beijing 100089China

Electrical characteristics of an isolated supercell storm observed on 13 June 2014 over Beijing were investigated using lightning data obtained from the Beijing Lightning Network,radar reflectivity,and hydrometeor retrievals during the 6-h *** cloud-to-ground(+CG)lightning took a high percentage of CG *** and during a hail event,+CG lightning was more frequent than negative cloud-to-ground(-CG)lightning,except that+CG lightning took a high percentage at the beginning and in the dissipating *** the hail event ended,-CG lightning dominated and reached its maximum *** analysis of hydrometeors retrieved by X-band polarimetric radar revealed that the discharge concentrated in the convective region with graupel particles and hailstones,whereas graupel,snow and ice crystals in the stratiform *** radiation sources were located mainly in the convective region,some of which were distributed along a gradient of radar reflectivity from the convective region to the stratiform *** indication is that the supercell demonstrated an inverted tripole charge structure before the hail event,which converted to a normal tripole structure after the hail event.

关键词： lightning supercell Beijing Lightning Network charge structure

新工科背景下冶金与能源交叉专业“传输原理”教学

在线全文

学校读者我要写书评

暂无评论

教育教学论坛 2024年第17期 157-160页

作者：郄俊懋石文静黄军内蒙古科技大学能源与环境学院内蒙古包头014010

新工科背景下,专业与学科交叉、融合、渗透越来越广泛和深入,是当今科技发展的重要趋势。跨学科和跨专业的课程教学更有利于知识体系的拓展及学生综合能力的提升,也有利于培养宽口径创新型复合人才。结合内蒙古科技大学冶金工程专业特... 详细信息

新工科背景下,专业与学科交叉、融合、渗透越来越广泛和深入,是当今科技发展的重要趋势。跨学科和跨专业的课程教学更有利于知识体系的拓展及学生综合能力的提升,也有利于培养宽口径创新型复合人才。结合内蒙古科技大学冶金工程专业特色与“传输原理”的课程特点,阐述了冶金与能源学科交叉条件下“传输原理”教学进程中存在的问题与应对措施。通过课程思政、“冶金原理”与“传输原理”课程融合教学、课下结合课上灵活教学等方式提升课堂教学质量。

关键词：冶金工程能源动力交叉专业传输原理教学探讨

非遗文化与现代文创产品的跨界融合探索--以湖南邵东木偶戏为例

在线全文

学校读者我要写书评

暂无评论

丝网印刷 2024年第13期 13-15页

作者：周丽可郄金诺刘乐妍南华大学

探讨如何从传统非遗文化资源中汲取设计元素并结合现代文创产品进行融合,以湖南邵东木偶戏非物质文化遗产为例,深度剖析其艺术特色、文化内涵、视觉符号等元素在文创产品设计中的应用价值和创新路径。

关键词：湖南邵东木偶戏非遗文化文创产品设计

Application of Energy Saving Technology in Trichlorosilane Distillation Purification Process

在线全文

学校读者我要写书评

暂无评论

China Petroleum Processing & Petrochemical Technology 2019年第3期21卷 94-102页

作者： qie Siyuan Pang Weiwei Zhao Ming Huang Zheqing SINOPEC Research Institute of Petroleum Processing Beijing 100083 Department of Chemical Engineering School of Chemical Engineering and TechnologyXi’an Jiaotong UniversityXi’an 710049

The trichlorosilane(TCS)purification process consumes a significant amount of energy to achieve the high purity requirement for TCS quality(99.9999%).This work proposed a series of energy saving technology to enhance the TCS purification process,including the conventional process,the conventional process coupled with heat-pump(HP),the multi-effect distillation process,and the dividing-wall columns *** proposed schemes have been conceptually constructed by Aspen *** design and optimization of the processes have been performed by the sensitivity analysis and the response surface ***,the energy consumption and total annual cost(TAC)for these schemes were *** simulation results show that the TAC of the conventional process coupled with the integrated heat pump can reduce 50.5%of energy consumption as compared with the conventional process;the double-effect and three-effect processes can save 15.6%and 33.8%of energy consumption,respectively;the dividing wall column process and that coupled with the heat pump process can reduce by 22.3%and 48.1%of energy consumption,*** can be found that the operating cost can be saved by using the heat pump technology,while the capital cost increases due to the investment in the compressor,when the processes coupled with the heat pump are *** results demonstrate that the conventional process coupled with the HP technology has advantages over other distillation schemes for TCS purification in terms of the energy saving and economic effects.

关键词： trichlorosilane distillation purification energy saving technology process simulation

A homogenization-planning-tracking method to solve cooperative autonomous motion control for heterogeneous carrier dispatch systems

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Aeronautics 2022年第9期35卷 293-305页

作者： Jie LIU Xianzhou DONG Xinwei WANG Kaikai CUI Xiwang qie Jun JIA War Research Institute Academy of Military SciencesBeijing 100850China Department of Engineering Mechanics State Key Laboratory of Structural Analysis for Industrial EquipmentDalian University of TechnologyDalian 116024China Naval Aeronautical University Yantai 264000China Baimtec Materials Co. LtdBeijing 100094China

Taxiing aircraft and towed aircraft with drawbar are two typical dispatch modes on the flight deck of aircraft carriers. In this paper, a novel hierarchical solution strategy, named as the Homogenization-Planning-Tracking(HPT) method, to solve cooperative autonomous motion control for heterogeneous carrier dispatch systems is developed. In the homogenization layer, any towed aircraft system involved in the sortie task is abstracted into a virtual taxiing aircraft. This layer transforms the heterogeneous systems into a homogeneous configuration. Then in the planning layer, a centralized optimal control problem is formulated for the homogeneous system. Compared with conducting the path planning directly with the original heterogeneous system, the homogenization layer contributes to reduce the dimension and nonlinearity of the formulated optimal control problem in the planning layer and consequently improves the robustness and efficiency of the solution process. Finally, in the tracking layer, a receding horizon controller is developed to track the reference trajectory obtained in the planning layer. To improve the tracking performance,multi-objective optimization techniques are implemented offline in advance to determine optimal weight parameters used in the tracking layer. Simulations demonstrate that smooth and collision-free cooperative trajectory can be generated efficiently in the planning phase. And robust trajectory tracking can be realized in the presence of external disturbances in the tracking *** developed HPT method provides a promising solution to the autonomous deck dispatch for unmanned carrier aircraft in the future.

关键词： Autonomous motion control Carrier dispatch system Heterogeneous system Cooperative trajectory planning Receding horizon control Weight optimization

基于TRNSYS的装配式异质复合墙体日光温室建筑参数优化

在线全文

学校读者我要写书评

暂无评论

中国农业大学学报 2024年第7期29卷 170-180页

作者：李永王文静阳春郄丽娟康利改李沫李梦迪河北省建筑科学研究院石家庄050227 河北科技大学建筑工程学院石家庄050018 中国建筑科学研究院有限公司北京100013 河北省农林科学研究院经济作物研究所石家庄050051

为优化装配式异质复合墙体日光温室的建筑参数,利用TRNSYS(Transient system simulation program)建立温室模型,采用连续阴天和连续晴天的实测数据验证模型,利用该模型分析温室脊高、北墙高度、后屋面水平投影宽度的改变对室内温度、北... 详细信息

为优化装配式异质复合墙体日光温室的建筑参数,利用TRNSYS(Transient system simulation program)建立温室模型,采用连续阴天和连续晴天的实测数据验证模型,利用该模型分析温室脊高、北墙高度、后屋面水平投影宽度的改变对室内温度、北墙温度和建造成本的影响。结果表明:室内温度、北墙温度和总建造成本随脊高增大而增加,当脊高>5.3 m时,室内平均温度和北墙平均温度的增幅明显降低,但建造成本仍增加;室内温度、北墙温度和总建造成本随北墙高度增大而增加,北墙高度为3.7 m时室内温度和北墙温度达到较好效果,北墙高度继续增大,对温度的提升效果并不明显;后屋面水平投影宽度为1.8 m时,温室后屋面仰角为46°,采光屋面角为27°,可满足温室内采光要求。综上,温室脊高为5.3 m,北墙高度为3.7 m,后屋面水平投影宽度为1.8 m时,可达到室内热性能和建造成本的最佳平衡,此时温室总建造成本为22.15万元,每平方米建造成本约230元。

关键词：日光温室 TRNSYS 温度建造成本

Situation and hotspot analysis on rural transport infrastructure from the perspective of bibliometric analysis

在线全文

学校读者我要写书评

暂无评论

Journal of Traffic and Transportation Engineering(English Edition) 2023年第6期10卷 1074-1098页

作者： Minqing Zhu Zi Wang Hongjun Cui Yizhe Yang Peiqi qie School of Architecture and Art Design Hebei University of TechnologyTianjin 300130China School of Civil and Transportation Engineering Hebei University of TechnologyTianjin 300401China International School Beijing University of Posts and TelecommunicationsBeijing 100876China

The construction of rural transportation infrastructure is of great significance to promote the organic integration of transportation construction with resource exploitation and industrial development in rural areas,and realize poverty alleviation and poverty reduction driven by convenient *** order to understand the research status of rural transport infrastructure at home and abroad,this paper adopts CiteSpace,VOSviewer,Pajek,SPSS and other software and makes quantitative analysis and knowledge map drawing of the literature on rural transportation infrastructure collected in Web of Science *** results show that the emphasis of this field is different in different periods,Chinese scholars'attention to this field increased significantly after the rural revitalization strategy was put *** on the classification results of keyword clustering,the following conclusions are drawn:The planning mode of rural transportation infrastructure under rural revitalization is relatively backward and the lack of theoretical analysis of the root causes has achieved the purpose of rational allocation of transportation ***,there are few studies on the mechanism and empirical analysis of transport infrastructure's effect on rural poverty *** the analysis of research hotspots,the integration of urban and rural areas and rural road safety will be the main research direction in the future,and rural road accidents and other topics have research potential.

关键词： Rural transportation infrastructure Visual analysis Rural revitalization Bibliometric measurement Research hotspots

Effect of H2 addition on process of primary slag formation in cohesive zone

在线全文

学校读者我要写书评

暂无评论

Journal of Iron and Steel Research International 2020年第2期27卷 132-140页

作者： Ya-na qie Qing Lyu Chen-chen Lan Shu-hui Zhang Ran Liu College of Metallurgy and Energy Key Laboratory for Advanced Metallurgy TechnologyNorth China University of Science and TechnologyTangshan 063009HebeiChina

Based on the technology of gas-injection blast furnace(BF),the characteristics of primary slag formation with H2 addition were *** results indicate that,compared with traditional BF,the primary melt is formed at a lower temperature,which promotes the deformation of the solid burden *** the increase in temperature and H2 content,the quantity of formed melt containing FeO decreases sharply,corresponding to the crystallization of solid 2CaO Si02 during reduction.A wider softening range and narrower melting zone could be found in the gas-injection BF with a higher reduction *** permeability of burden layer is ameliorated as a result of decreased melt *** influence of H2 on the high-temperature properties of burden is not so conspicuous when the H2 addition is from 10 to 15 vol.%against 5 to 10 vol.%.What is more,the slag shows a better liquidity with the decrease in basicity,owing to the transformation of melt composition from a primary phase field with high melting point to that with low melting *** process of slag forming in gas-injection BF is characterized by earlier melt formation,less primary slag,higher melting temperature,better permeability and better liquidity,and the phase compositions of primary slag are close to those of final slag.

关键词： Reduction degradation Primary slag formation Melt Hydrogen addition Gas-injection blast furnace