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基于TRNSYS的学校建筑PV/T跨季节蓄热供暖研究

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制冷与空调（四川） 2024年第2期38卷 196-201页

作者：田亮徐序尹文龙李小明章文杰中铁建设集团有限公司北京100040 南京理工大学能源与动力工程学院南京210094

PV/T耦合地源热泵系统在多能互补、提高可再生能源利用率方面受到广泛的关注,针对南京市某小学工程应用PV/T耦合地源热泵系统实现跨季节供暖做模拟分析。应用TRNSYS软件针对系统的运行温度、集热效率、设备工况、能源利用率进行模拟。发... 详细信息

PV/T耦合地源热泵系统在多能互补、提高可再生能源利用率方面受到广泛的关注,针对南京市某小学工程应用PV/T耦合地源热泵系统实现跨季节供暖做模拟分析。应用TRNSYS软件针对系统的运行温度、集热效率、设备工况、能源利用率进行模拟。发现PV/T电池通过地埋管放热的冷却水具有较好的集热冷却效果;土壤蓄热体平均温度仅下降0.23℃,实现土壤热平衡,且该系统的跨季节蓄热率约为60%;热泵机组实际COP平均COP在5以上,具有良好的节能效果;系统跨季节可以提供建筑热负荷的73.17%,发电量可以满足63.2%的热泵能耗。

关键词： PV/T 地埋管蓄热跨季节供暖 TRNSYS

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学校建筑光伏应用及效益分析

江苏建筑 2024年第2期 141-144页

作者：张建忠尹文龙马凯章文杰南京长江都市建筑设计股份有限公司江苏南京210000 南京理工大学能源与动力工程学院江苏南京210000 南京河西新城建设发展有限公司江苏南京210000

文章以南京某幼儿园与中学、小学为例,结合实地测量和图纸计算的方式分析光伏可安装面积,对中小学校园光伏潜力进行了计算分析。结果表明,一所南京普通小学校园的光伏年发电量最高可达38万kWh,但光伏实时日发电量只能满足部分或全部照... 详细信息

文章以南京某幼儿园与中学、小学为例,结合实地测量和图纸计算的方式分析光伏可安装面积,对中小学校园光伏潜力进行了计算分析。结果表明,一所南京普通小学校园的光伏年发电量最高可达38万kWh,但光伏实时日发电量只能满足部分或全部照明能耗,无法实现建筑全部能耗实时自给自足;校园光伏建设的初投资较大,在光伏发电全自用情形下大多可以在7~9年内实现投资的完全回收;单晶硅组件虽然初投资更高,但在发电量和经济效益上更有优势;对采用不同组件校园光伏系统的减排潜力进行了分析比较。在中小学校园部署光伏系统要把握校园建筑本身的建筑、能耗特点,充分利用优势,校园光伏的部署也应顺应电气化趋势,可实现十分可观的经济效益和环境效益。

关键词：学校建筑光伏建设光伏发电潜力技术经济分析

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中小学校园零碳运行潜力分析

建设科技 2024年第1期 22-25页

作者：张建忠尹文龙马凯李秋章文杰南京长江都市建筑设计股份有限公司南京210022 南京理工大学能源与动力工程学院南京210094 南京河西新城建设发展有限公司南京210000

本文以南京三所学校为例,建立其运行阶段碳排放与光伏减碳模型,探究不同情境下中小学校零碳运行可能性。结果显示:在情景Ⅰ中,以目前校园碳排放与碳汇系统很难做到零碳运行;情景Ⅱ中最佳情形下三校零碳指标与运行碳排指标差值仅为1.67 k... 详细信息

本文以南京三所学校为例,建立其运行阶段碳排放与光伏减碳模型,探究不同情境下中小学校零碳运行可能性。结果显示:在情景Ⅰ中,以目前校园碳排放与碳汇系统很难做到零碳运行;情景Ⅱ中最佳情形下三校零碳指标与运行碳排指标差值仅为1.67 kgCO_(2)/m^(2)·a、1.22 kgCO_(2)/m^(2)·a和0.0028 kgCO_(2)/m^(2)·a,案例中的初中校园基本可以达到零碳运行目标。

关键词：中小学运行阶段碳排放光伏减排零碳运行

Investigation of the Corrosion and Passive Behavior of HP-13Cr Stainless Steel in Formate Annulus Protection Fluid

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Acta Metallurgica Sinica(English Letters) 2024年第6期37卷 1087-1103页

作者： Jidong Wang Tengfei yin wenlong Qi Xuanpeng Li Yang Zhao Tao Zhang Fuhui Wang Shenyang National Laboratory for Materials Science Northeastern UniversityShenyang110819China State Key Laboratory of Performance and Structural Safety for Petroleum Tubular Goods and Equipment Materials Tubular Goods Research InstituteCNPCXi’an710077China

The corrosion and passive behavior of HP-13Cr stainless steel(HP-13Cr SS)in formate annulus protection fluid was ***-13Cr SS exhibited good passive behavior in clean formate annulus protection fluid,which was attributed to a thinner and more dense passive film mainly composed of Cr_(2)O_(3).In the formation water solution,the passive film was composed of metastable Cr(OH)3,which was explained by the isoelectric point theory,resulting in the deterioration of the passive behavior of HP-13Cr *** the formation water penetrated the formate annulus protection fluid,a large number of loose FeCO_(3)particles formed in the corrosion scales,thus HP-13Cr SS suffered severe ***,avoiding formation water penetrating the formate annulus protection fluid is conducive to improving the service life of HP-13Cr SS oil tubes in extremely aggressive environment.

关键词： HP-13Cr SS Passive behavior Formate annulus protection fluid Isoelectric point

Enhanced visible light absorption of Bi_(2)WO_(6)/SiO_(2) with abundant adsorbed oxygen for the degradation of organic pollutant

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Particuology 2024年第5期88卷 210-217页

作者： Yuanting Wu Xiaoying Wang wenlong Zhong Shan Zhang School of Material Science and Engineering Shaanxi University of Science and TechnologyXi'an 710021China

Heterogeneous photocatalysts exhibit high catalytic efficiency in the degradation of pollutants,but their stability and repeatability is not very good and requires high structural *** by nanosizing the pure Bi_(2)WO_(6)(BWO)photocatalyst without constructing a heterojunction,there is a significant improvement in its performance,with an enhancement effect of about 2.3 times(99.43%).The high photocatalytic degradation efficiency of the material can be attributed to the enhanced light absorption effect brought by the three-dimensional inverse-opal structure SiO_(2)(IS)and the abundant surface adsorbed oxygen generated after the formation of Si–O–W *** addition,the introduction of IS greatly increases the surface area of nanostructured BWO,which accelerates the charge transfer process,while the adsorbed oxygen promotes the participation of·O^(2−) in the photocatalytic reaction,thereby accelerating the consumption of photo-generated electrons and ultimately improving the separation of charge ***,the matched photonic bandgap further improves the absorption and utilization of light of the *** this work,we constructs Si–O–W bonds to obtain inverse-opal SiO_(2)/Bi_(2)WO_(6) with uniformly growth of pure phase nano BWO,which provides a feasible strategy for the preparation of high-performance pure-phase photocatalysts.

关键词： Bi_(2)WO_(6) SiO_(2) inverse-opal structure Photocatalysis Adsorbed oxygen

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闭式叶轮五轴原位检测路径规划与实验验证

航空学报 2018年第3期39卷 239-247页

作者：李文龙王刚尹周平华中科技大学数字制造装备与技术国家重点实验室武汉430074

闭式叶轮结构封闭,流道狭长,叶片弯扭曲大,如何生成无干涉且全局光顺的五轴原位检测路径是制约原位检测技术应用的难点问题。根据闭式叶轮曲面特征,定义了4种形式的可接近锥,基于相邻测轴弹簧模型构造了五轴原位检测路径优化目标函数,... 详细信息

闭式叶轮结构封闭,流道狭长,叶片弯扭曲大,如何生成无干涉且全局光顺的五轴原位检测路径是制约原位检测技术应用的难点问题。根据闭式叶轮曲面特征,定义了4种形式的可接近锥,基于相邻测轴弹簧模型构造了五轴原位检测路径优化目标函数,并通过前向欧拉差分法最小化该目标函数,在定义的连续检测可接近锥中计算最优测轴方向;采用某型号闭式叶轮完成了可接近锥计算、测轴方向优化、无干涉全局光顺检测路径生成等数值仿真与实测实验,验证了所提方法的可行性和有效性。

关键词：闭式叶轮原位检测可接近锥测轴方向弹性势能

Experimental investigation on weak shock wave mitigation characteristics of flexible polyurethane foam and polyurea

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Defence Technology（防务技术） 2024年第1期31卷 179-191页

作者： Shiyu Jia Cheng Wang wenlong Xu Dong Ma Fangfang Qi State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing100081China Institute for Advanced Technology Shandong UniversityJinan250061China

In recent years,explosion shock wave has been considered as a signature injury of the current military *** strong shock wave is lethal to the human body,weak shock wave can cause many more lasting *** investigate the protection ability and characteristics of flexible materials and structures under weak shock wave loading,the blast wave produced by TNT explosive is loaded on the polyurethane foam with the density of 200.0 kg/m3(F-200)and 400.0 kg/m3(F-400),polyurea with the density of 1100.0 kg/m^(3)(P-1100)and structures composed of the two materials,which are intended for individual *** results indicate that the shock wave is attenuated to weak pressure disturbance after interacting with the flexible materials which are not *** shock wave protective capability of single-layer materials is dependent on their thickness,density and microscopic *** overpressure,maximum pressure rise rate and impulse of transmitted wave decrease exponentially with increase in sample *** the same thickness,F-400 provides better protective capability than F-200 while P-1100 shows the best protective capability among the three *** this study,as the materials are not destroyed,F-200 with a thickness more than10.0 mm,F-400 with a thickness more than 4.0 mm,and P-1100 with a thickness more than 1.0 mm can attenuate the overpressure amplitude more than 90.0%.Further,multi-layer flexible composites are *** layer layouts of designed structures and layer thickness of the single-layer materials can affect the protective *** the research range,the structure in which polyurea is placed on the impact side shows the optimal shock wave protective performance,and the thicknesses of polyurea and polyurethane foam are 1.0 mm and 4.0 mm *** overpressure attenuation rate reached maximum value of 93.3%and impulse attenuation capacity of this structure are better than those of s

关键词： Free-field explosion Weak shock wave mitigation Polyurea Polyurethane foam Multi-layered composites

Disturbances rejection optimization based on improved two-degree-of-freedom LADRC for permanent magnet synchronous motor systems

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Defence Technology（防务技术） 2024年第3期33卷 518-531页

作者： Chenggang Wang Jianhu Yan wenlong Li Liang Shan Le Sun School of Automation Nanjing University of Science and TechnologyNanjing 210094China

Permanent magnet synchronous motor(PMSM)speed control systems with conventional linear active disturbance rejection control(CLADRC)strategy encounter issues regarding the coupling between dynamic response and disturbance suppression and have poor performance in suppressing complex nonlinear *** order to address these issues,this paper proposes an improved two-degree-of-freedom LADRC(TDOF-LADRC)strategy,which can enhance the disturbance rejection performance of the system while decoupling entirely the system's dynamic and anti-disturbance performance to boost the system robustness and simplify controller parameter *** models that consider total disturbances are developed to design the TDOF-LADRC speed controller ***,to evaluate the control performance of the TDOF-LADRC strategy,its stability is proven,and the influence of each controller parameter on the system control performance is *** on it,a comparison is made between the disturbance observation ability and anti-disturbance performance of TDOF-LADRC and CLADRC to prove the superiority of TDOF-LADRC in rejecting ***,experiments are performed on a 750 W PMSM experimental platform,and the results demonstrate that the proposed TDOF-LADRC exhibits the properties of two degrees of freedom and improves the disturbance rejection performance of the PMSM system.

关键词： Permanent magnet synchronous motor(PMSM) Active disturbance rejection control(ADRC) Disturbance observer Two-degree-of-freedom control Anti-disturbance

Study on force chain evolution of rice straw with different length during vibrational compression

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Particuology 2024年第2期85卷 310-322页

作者： Han Tang wenlong Xu Guixuan Zhu Changsu Xu Jinwu Wang College of Engineering Northeast Agricultural UniversityHarbin150030China

This paper explores the mechanism of force chain evolution and voidage change under vibrational and non-vibrational compression conditions of rice straw of different *** were used to explore the force chain evolution and voidage variation mechanism under different *** re-sults show that under non-vibrational compression,the strong force chain passes from top to bottom in vertical direction and from center to periphery in tangential *** vibrational compression,the force chain passes from top and bottom to center in vertical direction and the force chain evolves from outer ring to interior and exterior in tangential *** number of strong chains,voidage and standard deviation of the mean pressure under vibratory compression are lower than the values under non-vibratory *** promotes stress transfer and enhancement,velocity enhancement and density *** study analyzes the mechanical properties of different lengths straw during vibrational and non-vibrational compression from a detailed viewpoint.

关键词： Straw compression Voidage Discrete element method Mechanical properties Force chain transmission