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Impact of climate change on outdoor design conditions and implications to peak loads

Building Simulation 2022年第12期15卷 2051-2065页

作者： xujie huo Liu Yang Danny Hin Wa Li Isaac Lun Siwei Lou Yuan Shi School of Architecture&Urban Planning Shenzhen UniversityShenzhen 518060China BenYuan Design and Research Center Shenzhen UniversityShenzhen 518060China Shenzhen Key Laboratory of Architecture for Health&Well-being(in preparation) Shenzhen 518060China School of Architecture Xi’an University of Architecture and TechnologyXi’an 710055China Building Energy Research Group Department of Architecture and Civil EngineeringCity University of Hong KongHong KongChina Centre for Sustainable Energy Technologies University of Nottingham Ningbo ChinaNingbo 315100China School of Civil Engineering Guangzhou UniversityGuangzhou 510006China

This study exams the impact of climate change on outdoor design conditions and peak loads of five Chinese cities over the five major climate zones for the winter and summer *** design dry-bulb temperature(DDBT)and the coincident wet-bulb temperature(CWBT)for two 30-year periods;1971–2000 and 1984–2013 were *** was found that the DDBT of the period 1984–2013 was higher than that of the period 1971–2000,whereas the CWBT and the corresponding outdoor enthalpy of the period 1984–2013 was lower than that of 1971–2000 at the various cumulative *** trend implies that the increment in conductive heat gain through the building envelope due to the rising temperature can be lower than the reduction in fresh air load due to the lower outdoor air *** this case,the peak cooling loads may reduce in all five cities under study,and this is different from the widely held view that global warming will lead to more stringent outdoor design conditions,higher peak cooling loads and larger heating,ventilation and air conditioning(HVAC)plants than the current or historical *** implications to the“free-cooling”of HVAC systems with enthalpy control are discussed as well.

关键词： outdoor design conditions outdoor air enthalpy climate change peak loads

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中国被动式太阳能采暖设计气候资源潜能

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太阳能学报 2019年第11期40卷 3141-3147页

作者：霍旭杰杨柳西安建筑科技大学建筑学院

以中国93个城市相同年份的太阳辐射和空气温度为统计依据,采用计算模型和统计方法获得南向垂直面总辐射和采暖度日数,分析近50 a内中国的南向垂直面总辐射资源和空气温度变化规律,计算并呈现全国范围的辐射温差比。结果表明,近50 a内中... 详细信息

以中国93个城市相同年份的太阳辐射和空气温度为统计依据,采用计算模型和统计方法获得南向垂直面总辐射和采暖度日数,分析近50 a内中国的南向垂直面总辐射资源和空气温度变化规律,计算并呈现全国范围的辐射温差比。结果表明,近50 a内中国的南向垂直面总辐射资源显著下降,而年均温度和冬季温度则出现上升,相比于1971~1980年,1983~2012年被动式太阳能采暖设计气候资源潜能降幅明显。

关键词：南向垂直面总辐射采暖期天数采暖度日数辐射温差比被动式太阳能采暖

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建筑节能分析太阳总辐射模型研究综述

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土木建筑与环境工程 2015年第2期37卷 101-108页

作者：刘大龙杨柳霍旭杰刘加平西安建筑科技大学建筑学院西安710055 陕西省西部绿色建筑协同创新中心西安710055

太阳辐射是建筑节能分析的重要基础气象参数,实测数据远远不能满足需求,理论计算是目前获取辐射数据的主要途径。将常用水平面太阳总辐射模型归纳为气象参数、空间插值和基于DEM三类,详述了各自的原理和计算方法。对三类模型在建筑节能... 详细信息

太阳辐射是建筑节能分析的重要基础气象参数,实测数据远远不能满足需求,理论计算是目前获取辐射数据的主要途径。将常用水平面太阳总辐射模型归纳为气象参数、空间插值和基于DEM三类,详述了各自的原理和计算方法。对三类模型在建筑节能分析中的适用性进行了分析,展望了建筑节能分析用太阳辐射模型的发展趋势:气象参数模型与DEM模型的融合。

关键词：水平面太阳总辐射气象参数模型空间插值模型 DEM 辐射模型

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气候变化对室外设计条件和冷负荷峰值的影响

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西安建筑科技大学学报（自然科学版） 2021年第4期53卷 463-471,524页

作者：杨柳齐静妍霍旭杰牛兵兵西安建筑科技大学建筑学院陕西西安710055

通过分析中国五个主要气候区中的五个代表城市在两个30年里(1971-2000年和1984-2013年)的设计干球温度(DDBT)和同时发生湿球温度(CWBT),研究了气候变化对室外设计条件和制冷负荷峰值的影响.研究结果发现1984-2013年的DDBT往往高于1971-2... 详细信息

通过分析中国五个主要气候区中的五个代表城市在两个30年里(1971-2000年和1984-2013年)的设计干球温度(DDBT)和同时发生湿球温度(CWBT),研究了气候变化对室外设计条件和制冷负荷峰值的影响.研究结果发现1984-2013年的DDBT往往高于1971-2000年,但是1984-2013年的CWBT和相应的室外空气焓值在不同的保证率水平下均小于1971-2000年.与由于室外空气焓降低而导致的新风负荷减少相比,因温度升高而通过建筑物围护结构所产生的传导热的增益相对较小,这导致在五个主要气候区中冷负荷峰值均降低.这个结果与普遍认为的全球变暖将使室外设计条件更加严格,从而导致更高的冷负荷峰值和更大的供暖、通风和空调(HVAC)设备系统的观点相反.

关键词：室外设计条件室外空气焓气候变化冷负荷峰值降低

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Pedestrian trajectory prediction method based on the Social-LSTM model for vehicle collision

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Transportation Safety and Environment 2024年第3期6卷 140-151页

作者： Yong Han xujie Lin Di Pan Yanting Li Liang Su Robert Thomson Koji Mizuno School of Mechanical and Automotive Engineering Xiamen University of TechnologyXiamen 361024China Fujian Province Key Laboratory of Advanced Design and Manufacturing of Buses Xiamen 361024China Engineering Research Institute of Xiamen Kinglong United Automobile Industry Co. Ltd.Xiamen 361000China Chalmers University of Technology Gothenburg 41296Sweden Department of Mechanical Systems Engineering Nagoya UniversityNagoya 464-8603Japan

Techniques for predicting the trajectory of vulnerable road users are important to the development of perception systems for autonomous vehicles to avoid *** most effective trajectory prediction methods,such as Social-LSTM,are often used to predict pedestrian trajectories in normal passage ***,they can produce unsatisfactory prediction results and data redundancy,as well as difficulties in predicting trajectories using pixel-based coordinate systems in collision avoidance *** is also a lack of validations using real vehicle-to-pedestrian *** address these issues,some insightful approaches to improve the trajectory prediction scheme of Social-LSTM were proposed,such methods included transforming pedestrian trajectory coordinates and converting image coordinates to world *** YOLOv5 detection model was introduced to reduce target loss and improve prediction *** DeepSORT algorithm was employed to reduce the number of target transformations in the tracking *** Perspective Transformation(IPT)and Direct Linear Transformation(DLT)theories were combined to transform the coordinates to world coordinates,identifying the collision location where the accident could *** performance of the proposed method was validated by training tests using MS COCO(Microsoft Common Objects in Context)and ETH/UCY *** results showed that the target detection accuracy was more than 90%and the prediction loss tends to decrease with increasing training steps,with the final loss value less than 1%.The reliability and effectiveness of the improved method were demonstrated by benchmarking system performance to two video recordings of real pedestrian accidents with different lighting conditions.

关键词： vehicle-to-pedestrian collisions pedestrian trajectory prediction YOLOvB DeepSORT Social-LSTM

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Structurally Flexible 2D Spacer for Suppressing the Electron-Phonon Coupling Induced Non-Radiative Decay in Perovskite Solar Cells

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Nano-Micro Letters 2024年第9期16卷 325-340页

作者： Ruikun Cao Kexuan Sun Chang Liu Yuhong Mao Wei Guo Ping Ouyang Yuanyuan Meng Ruijia Tian Lisha Xie xujie Lü Ziyi Ge Zhejiang Provincial Engineering Research Center of Energy Optoelectronic Materials and Devices Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201People’s Republic of China School of Materials Science and Chemical Engineering Ningbo UniversityNingbo 315211People’s Republic of China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049People’s Republic of China Center for High Pressure Science and Technology Advanced Research(HPSTAR) Shanghai 201203People’s Republic of China

This study presents experimental evidence of the dependence of non-radiative recombination processes on the electron-phonon coupling of perovskite in perovskite solar cells(PSCs).Via A-site cation engineering,a weaker electron-phonon coupling in perovskite has been achieved by introducing the structurally soft cyclohexane methylamine(CMA^(+))cation,which could serve as a damper to alleviate the mechanical stress caused by lattice oscillations,compared to the rigid phenethyl methylamine(PEA^(+))*** demonstrates a significantly lower non-radiative recombination rate,even though the two types of bulky cations have similar chemical passivation effects on perovskite,which might be explained by the suppressed carrier capture process and improved lattice geometry *** resulting PSCs achieve an exceptional power conversion efficiency(PCE)of 25.5%with a record-high opencircuit voltage(V_(OC))of 1.20 V for narrow bandgap perovskite(FAPbI_(3)).The established correlations between electron-phonon coupling and non-radiative decay provide design and screening criteria for more effective passivators for highly efficient PSCs approaching the Shockley-Queisser limit.

关键词： Electron-phonon coupling A-site cation engineering Non-radiative recombination

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Development of a stable attenuated double-mutant of tobacco mosaic virus for cross-protection

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Journal of Integrative Agriculture 2024年第7期23卷 2318-2331页

作者： Xiaojie Xu Shaoyan Jiang Chunju Liu xujie Sun Qing Zhu Xiuzhai Chen Pengchao Jiang Fenglong Wang Yanping Tian Xiangdong Li The Engineering Research Institute of Agriculture and Forestry Ludong UniversityYantai 264025China Laboratory of Plant Virology Department of Plant PathologyCollege of Plant ProtectionShandong Agricultural UniversityTai’an 271018China Weifang Tobacco Corporation Weifang 261031China Linyi Tobacco Corporation Linyi 276000China Tobacco Research Institute Chinese Academy of Agricultural SciencesQingdao 266101China

Tobacco(Nicotiana tabacum)and tomato(Solanum lycopersicum)are two major economic crops in *** mosaic virus(TMV;genus Tobamovirus)is the most prevalent virus infecting both ***,some widely cultivated tobacco and tomato cultivars are susceptible to TMV and there is no effective strategy to control this ***-protection can be a safe and environmentally friendly strategy to prevent viral ***,stable attenuated TMV mutants are *** this study,we found that the substitutions in the replicase p126,arginine at position 196(R^(196))with aspartic acid(D),glutamic acid at position 614(E^(614))with glycine(G),serine at position 643(S^(643))with phenylalanine(F),or D at position 730(D^(730))with S,significantly reduced the virulence and replication of ***,only the mutation of S^(643) to F reduced the RNA silencing suppression activity of TMV p126.A double-mutant TMV-E614G-S643F induced no visible symptom and was genetically stable through six successive passages in tobacco ***,our results showed that TMV-E614G-S643F double-mutant could provide effective protection against the wild-type TMV infection in tobacco and tomato *** study reports a promising mild mutant for cross-protection to control TMV in tobacco and tomato plants.

关键词： cross-protection double-mutant p126 tobacco mosaic virus virulence

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两种逐时温度算法下的暖通空调设计温度比较

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西安建筑科技大学学报（自然科学版） 2016年第1期48卷 148-154页

作者：霍旭杰杨柳王玉英闫友菲张彦云西安建筑科技大学建筑学院陕西西安710055 西安建筑科技大学理学院陕西西安710055 西安建筑科技大学信息与控制工程学院陕西西安710055

为比较不同原始数据来源所引起的暖通设计温度差异,以中国建筑热工设计分区的五个典型代表城市1971~2000年的调和分析和三次样条逐时干球温度结果,采用ASHRAE不保证率方法统计了供暖设计温度和空调设计温度,定量分析了ASHRAE设计温度以... 详细信息

为比较不同原始数据来源所引起的暖通设计温度差异,以中国建筑热工设计分区的五个典型代表城市1971~2000年的调和分析和三次样条逐时干球温度结果,采用ASHRAE不保证率方法统计了供暖设计温度和空调设计温度,定量分析了ASHRAE设计温度以及中国规范中的供暖室外计算温度和夏季空调室外计算干球温度的差异,以及对典型代表城市耗热量的影响.结果表明调和分析方法比三次样条方法具有略高的极端高温和略低的极端低温,调和分析和三次样条计算结果均能基本反映当地温度特征.中国地面台站观测气象数据与ASHRAE逐时气象数据在供暖设计干球温度和制冷设计干球温度的绝对误差分别约为-1.0℃和0.6℃,所引起的围护结构耗热量的绝对误差约为0.9 W/m^2,且在三次样条方法下的供暖设计温度和围护结构耗热量更接近于ASHRAE设计值与其耗热量结果.

关键词：供暖设计温度制冷设计温度调和分析三次样条

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Interface engineering of 2D NiFe LDH/NiFeS heterostructure for highly efficient 5-hydroxymethylfurfural electrooxidation

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Chinese Chemical Letters 2024年第9期35卷 514-520页

作者： Lili Wang Ya Yan Rulin Li xujie Han Jiahui Li Ting Ran Jialu Li Baichuan Xiong Xiaorong Song Zhaohui Yin Hong Wang Qingjun Zhu Bowen Cheng Zhen Yin State Key Laboratory of Separation Membranes and Membrane Processes School of ChemistryTiangong UniversityTianjin 300387China School of Chemical Engineering and Technology Tiangong UniversityTianjin 300387China College of Chemical Engineering and Materials Science Tianjin University of Science and TechnologyTianjin 300457China State Key Laboratory of Biobased Fiber Manufacturing Technology Tianjin University of Science and TechnologyTianjin 300457China School of Materials Science and Engineering Tiangong UniversityTianjin 300387China Deutsches Elektronen-Synchrotron DESY Platanenallee 6Zeuthen 15738Germany Department of Chemistry and The Center for the Science of Materials Berlin Humboldt-Universitäzu BerlinBerlin 12489Germany

The electrochemical oxidation of 5-hydroxymethylfurfural(HMF)to valuable chemicals is an efficient way to upgrade biomass molecules and replace traditional catalytic *** is crucial to develop efficient and low-cost earth-abundant electrocatalysts to enhance catalytic performance of HMF ***,a new type of two-dimensional(2D)hybrid arrays consisting of Ni Fe layered double hydroxides(LDH)nanosheets and bimetallic sulfide(Ni Fe S)is constructed via interface engineering for efficient electrocatalytic oxidation of HMF to 2,5-furandicarboxylic acid(FDCA).The preparation process of 2D Ni Fe LDH/NiFeS with ultrathin heterostructure involves in anchoring a Co-based metal-organic framework(Co MOF)as template onto the carbon cloth(CC)via in-situ growth,formation of NiFe LDH on the surface of Co MOF and subsequent partial *** electrocatalyst of Ni Fe LDH/Ni Fe S exhibits outstanding performance towards HMF oxidation,about 98.5%yield for FDCA and 97.2%Faraday efficiency(FE)in the alkaline electrolyte with 10 mmol/L HMF,as well as excellent stability retaining 90.1%FE for FDCA after six cycles ***,even at an HMF concentration of 100 mmol/L,the yield and FE for FDCA remain high at 83.6%and 93.6%,*** findings highlight that 2D heterostructure containing abundant interfaces between Ni Fe LDH nanosheets and Ni Fe S can enhance the intrinsic activity of LDH and thus promote the oxidation reaction ***,the synergistic effect of the bimetallic Ni Fe compounds also improved the selectivity of HMF conversion to *** present work demonstrates that constructing 2D ultrathin heterostructure of Ni Fe LDH/Ni Fe S is a facile strategy via interface engineering to enhance the intrinsic activity of LDH electrocatalysts,which would open new avenues toward low-cost and advanced 2D nanocatalysts for sustainable energy conversion and electrochemical valorization of biomass derivatives.

关键词： Electrocatalytic oxidation Interface engineering 2D ultrathin heterostructure Layered double hydroxides 5-Hydroxymethylfurfural

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建筑热环境分析干球温度逐时计算方法比较:以上海地区为例

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暖通空调 2017年第3期47卷 108-112,84页

作者：张彦云王玉英霍旭杰闫友菲杨柳西安建筑科技大学

选择上海某台站2012年每日4次定时干球温度,分别采用调和分析和三次样条方法计算其全年逐时温度,比较了2种方法的计算结果与实测值之间的均方根误差与绝对误差,讨论了这2种方法的计算精度与适用性。结果表明:调和分析与三次样条方法均... 详细信息

选择上海某台站2012年每日4次定时干球温度,分别采用调和分析和三次样条方法计算其全年逐时温度,比较了2种方法的计算结果与实测值之间的均方根误差与绝对误差,讨论了这2种方法的计算精度与适用性。结果表明:调和分析与三次样条方法均能满足典型气象年生成与室外计算参数统计的要求;三次样条方法的计算精度略高于调和分析。

关键词：逐时干球温度建筑热环境调和分析三次样条均方根误差绝对误差

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