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The influence of calculation error of hourly marine meteorological parameter on building energy consumption calculation

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Frontiers of Architectural Research 2022年第5期11卷 981-991页

作者： dalong liu Tian Sun Yufei Han Xiuying Yan School of Architecture Xi'an University of Architecture and TechnologyXi'an 710055China

The ocean is a crucial area for future economic *** marine environment has high energy-efficient and ecological requirements for building *** parameters are the key basis for the analysis and design of building energy *** lack of meteorological parameters for energy efficiency,particularly hourly data,under oceanic climatic conditions is a universal *** appropriate calculation methods of hourly meteorological parameters under oceanic climatic conditions are explored in this *** impact of the calculation errors of the hourly meteorological parameters on building energy consumption is also *** key meteorological parameters are selected:temperature,humidity,and wind *** hourly calculations methods,including linear interpolation,cubic spline interpolation,pieceated three-Hermite interpolation,Akima interpolation,and radial basis function interpolation,are selected to calculate the error of the difference method,with Xiamen,Haikou,and Sanya as the locations of meteorological *** interpolation methods are selected for the three parameters,and the seasonal and regional characteristics of the errors of each parameter are *** interpolation methods should be selected for different meteorological parameters in different *** error data of the three parameters of different magnitudes are constructed.A quantitative relationship between the sum of squares due to error of the three meteorological parameters and the rate of change of cooling energy consumption is *** hourly calculation errors of meteorological parameters have an important impact on the calculation of dynamic energy *** energy consumption differences caused by the errors of different parameters are *** regional and seasonal differences also *** research strengthens the research foundation of building energy consumption calculation under oceanic climate c

关键词： Building energy efficiency Oceanic climate Meteorological parameters Interpolation method Calculation error Dynamic energy simulation

Investigation of solution chemistry to enable efficient lithium recovery from low-concentration lithium-containing wastewater

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Frontiers of Chemical Science and Engineering 2020年第4期14卷 639-650页

作者： Chunlong Zhao Mingming He Hongbin Cao Xiaohong Zheng Wenfang Gao Yong Sun He Zhao dalong liu Yanling Zhang Zhi Sun State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China Beijing Engineering Research Center of Process Pollution Control Key Laboratory of Green Process and EngineeringInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China University of Nottingham Ningbo China Ningbo 315100China Henan Bingsheng Biotechnology Company Limited Kaifeng 475103China

In the production of lithium-ion batteries(LIBs)and recycling of spent LIBs,a large amount of low-concentration lithium-containing wastewater(LCW)is *** recovery of Li from this medium has attracted significant global attention from both the environmental and economic *** achieve effective Li recycling,the features of impurity removal and the interactions among different ions must be ***,it is generally dificult to ensure highly efficient removal of impurity ions while retaining Li in the solution for further *** this study,the removal of typical impurity ions from LCW and the interactions between these species were systematically investigated from the thermodynamic and kinetics *** was found that the main impurities(e.g.,Fe^+,AIP^+,Ca^2+,and Mg^2+)could be efficiently removed with high Li recovery by control-ling the ionic strength of the *** mechanisms of Fe^3+,Al^+,Ca^2+,and Mg^2+removal were investigated to identify the controlling steps and reaction *** was found that the precipitates are formed by a zero-order reaction,and the activation energies tend to be low with a sequence of fast chemical reactions that reach equilibrium very ***,this study focused on Li loss during removal of the impurities,and the corresponding removal rates of Fe^+,Al^+,Ca^2+,and Mg^2+were found to be 99.8%,99.5%,99%,and 99.7%,***-quently,high-purity LisPO4 was obtained via one-step ***,this research demonstrates a potential route for the effective recovery of Li from low-concentra-tion LCW and for the appropriate treatment of acidic LCW.

关键词： lithium-containing wastewater lithium phos-phate precipitation impurity ion

Research progress on the role of adipocyte exosomes in cancer progression

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Oncology Research 2024年第10期32卷 1649-1660页

作者： YUN WANG XIAOJIANG LI dalong liu ZHIFENG WANG JICHEN XIA LIJUN WANG XUDONG ZHANG Department of Breast and Thyroid Surgery Affiliated Hospital of Changchun University of Traditional Chinese MedicineChangchun130021China Department of Orthopaedics Affiliated Hospital of Changchun University of Traditional Chinese MedicineChangchun130021China Department of Internal Medicine Changchun Chaoyang District Hospital of Traditional Chinese MedicineChangchun130061China Department of Orthopedics and Traumatology Jilin Integrated Traditional Chinese and Western Medicine Hospital of Jilin ProvinceJilin132012China Department of Oncology Liaoyuan Second People’s HospitalLiaoyuan136299China Department of Brain Surgery Affiliated Hospital of Changchun University of Traditional Chinese MedicineChangchun130021China

Exosomes,minute vesicles ubiquitously released by diverse cell types,serve as critical mediators in intercellular *** pathophysiological relevance,especially in malignancies,has garnered significant attention.A meticulous exploration of the exosomal impact on cancer development has unveiled avenues for innovative and clinically valuable *** cargo conveyed by exosomes exerts transformative effects on both local and distant microenvironments,thereby influencing a broad spectrum of biological responses in recipient *** membranebound extracellular vesicles(EVs)play a pivotal role in delivering bioactive molecules among cells and *** and biological processes in recipient cells,ranging from stromal cell reprogramming to immunological responses,extracellular matrix formation,and modulation of cancer cell activation,expansion,and metastasis,are subject to exosome-mediated cell-to-cell ***,exosomes have been implicated in endowing cancer cells with resistance to *** research has explored the potential of exosomes as therapeutic targets and diagnostic *** comprehensive review seeks to provide an in-depth understanding of the pivotal components and roles of exosomes in tumorigenesis,growth,progression,and therapeutic *** insights into the multifaceted involvement of exosomes in malignant cancers are essential for the scientific community,fostering the development of novel therapeutic and diagnostic strategies in the relentless pursuit of cancer.

关键词： Exosomes Extracellular vesicles Adipose tissue Tumor microenvironment Obesity

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信息提供下的公交管制策略

北京航空航天大学学报 2015年第3期41卷 502-508页

作者：刘大龙田琼北京航空航天大学经济管理学院北京100191

研究在提供公共交通服务信息情况下不同的管制策略对公交企业在设定价格、发车时间间隔的影响.公交管制策略主要包括完全无管制(垄断)策略、完全管制(社会最优)策略、收益率管制策略和数量控制策略.模型假设到站台的乘客流是随机分布的... 详细信息

研究在提供公共交通服务信息情况下不同的管制策略对公交企业在设定价格、发车时间间隔的影响.公交管制策略主要包括完全无管制(垄断)策略、完全管制(社会最优)策略、收益率管制策略和数量控制策略.模型假设到站台的乘客流是随机分布的,乘客根据公交公司的服务频率和信息质量来决定是否事先计划行程以最小化自己的期望出行成本.研究表明,不同管制下的信息质量与乘车人数、信息质量与发车时间间隔有类似的对应关系,社会最优时提供信息质量好于垄断最优,且乘车人数是垄断最优的2倍,其他外生变量对4种管制下的决策也具有显著影响.

关键词：公共交通管理信息提供管制策略收益率管制数量管制

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气候变化下我国建筑能耗演化规律研究

太阳能学报 2013年第3期34卷 439-444页

作者：刘大龙刘加平杨柳 r西安建筑科技大学建筑学院西安710055

通过气候预测获取了我国主要气候区代表城市未来50a（2001～2050年）主要气象参数的集合平均值。分析关键气象参数——气温和太阳辐射在2001—2050期间的变化规律。使用模拟气象分析年数据模式分别制作当前气候条件下（1971—2000年）... 详细信息

通过气候预测获取了我国主要气候区代表城市未来50a（2001～2050年）主要气象参数的集合平均值。分析关键气象参数——气温和太阳辐射在2001—2050期间的变化规律。使用模拟气象分析年数据模式分别制作当前气候条件下（1971—2000年）和未来气候条件下（2021—2050年）的建筑能耗模拟气象年数据，使用DOE2模拟软件对我国各气候区居住建筑在两种不同气候条件下的建筑能耗进行模拟。获得居住建筑单位面积采暖能耗减少、空调能耗增加、总建筑能耗增加的能耗变化规律，分析能耗变化的主要原因，提出未来建筑节能的主要方向是减少建筑空调能耗。

关键词：气候变化建筑能耗能耗模拟建筑节能

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多工况运行下围护结构动态热响应的评价方法

太阳能学报 2021年第3期42卷 469-474页

作者：刘大龙马岚西安建筑科技大学建筑学院西安710055

建筑运行工况会影响围护结构的热响应,为研究自然通风和空调2种居住建筑运行工况下围护结构动态热响应的差异,通过对比2种工况围护结构的边界条件与传热过程,提出围护结构动态热响应的评价指标——墙体温变条件指数WTCI,该指标兼顾2种... 详细信息

建筑运行工况会影响围护结构的热响应,为研究自然通风和空调2种居住建筑运行工况下围护结构动态热响应的差异,通过对比2种工况围护结构的边界条件与传热过程,提出围护结构动态热响应的评价指标——墙体温变条件指数WTCI,该指标兼顾2种工况下墙体热性能不同的评价内涵。以夏热冬暖地区为例,选取18种墙体构造来验证WTCI在多工况下对墙体动态热响应评价的有效性,结果表明该指标计算简便、评价有效,能够评价围护结构在多工况动态传热过程中的热响应快慢,可区分墙体在不同工况下的隔热表现。深入分析WTCI在多工况下的适用性,对WTCI指标的应用给出建议。

关键词：空调工况热舒适节能热性能自然通风工况

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极端天气对被动式太阳能建筑采暖效率的影响

太阳能学报 2024年第2期45卷 42-49页

作者：刘大龙韩雨菲西安建筑科技大学建筑学院西安710055 西安建筑科技大学信息与控制工程学院西安710311

为研究极端天气对被动式太阳能建筑采暖效率的影响,选取关键气象参数(直射辐射、干球温度)来构造极端冷气象条件,主要分析太阳低辐射和极端低温对拉萨、乌鲁木齐、兰州、哈尔滨4个城市的被动式太阳能建筑采暖效率的影响。结果表明:随着... 详细信息

为研究极端天气对被动式太阳能建筑采暖效率的影响,选取关键气象参数(直射辐射、干球温度)来构造极端冷气象条件,主要分析太阳低辐射和极端低温对拉萨、乌鲁木齐、兰州、哈尔滨4个城市的被动式太阳能建筑采暖效率的影响。结果表明:随着太阳直射辐射和温度的降低,哈尔滨整个采暖季的采暖潜力下降最大,拉萨、兰州、乌鲁木齐在太阳直射辐射下降超过50%时,采暖潜力下降最大,哈尔滨在辐射下降43%时采暖潜力下降最大。在温度下降不超过10℃的情况下,拉萨和哈尔滨的采暖潜力下降最大,兰州和乌鲁木齐则是在温度分别下降11和15℃时,采暖潜力下降最大。气象参数对采暖潜力的敏感性分析表明,太阳直射辐射对太阳能采暖潜力的影响大于温度。同时,对不同设计因素进行全局敏感性分析,建筑保温材料的物理参数对采暖潜力的影响高于其他设计参数。

关键词：极端天气太阳能采暖被动式太阳能建筑温度太阳辐射敏感性分析

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青藏高原气候条件下的建筑能耗分析

太阳能学报 2016年第8期37卷 2167-2172页

作者：刘大龙刘加平张习龙杨柳西安建筑科技大学建筑学院西安710055 西安建筑科技大学陕西省(西部)绿色建筑重点实验室西安710055

为探讨青藏高原地区建筑能耗计算与节能设计的特殊性,针对青藏高原的严寒和寒冷气候区分别进行水平面总辐射、温湿度等气象参数的高低海拔对比分析。结果显示:在同一气候区中,辐射因素是导致能耗计算方法、节能设计策略不同的关键因素,... 详细信息

为探讨青藏高原地区建筑能耗计算与节能设计的特殊性,针对青藏高原的严寒和寒冷气候区分别进行水平面总辐射、温湿度等气象参数的高低海拔对比分析。结果显示:在同一气候区中,辐射因素是导致能耗计算方法、节能设计策略不同的关键因素,而非海拔的高低。高海拔强辐射地区的采暖能耗不宜采用稳态计算方法,应采用动态能耗模拟或非稳态传热方法;其节能设计应增强围护结构的综合热工性能。

关键词：青藏高原海拔太阳辐射采暖能耗

基于动态规划的冗余机械臂液压驱动系统能量优化

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中国工程机械学报 2018年第6期16卷 492-496,501页

作者：刘大龙南宁学院交通学院南宁530200

冗余机械臂液压驱动系统在执行任务时,消耗能源比较严重,从而造成了资源浪费.对此,创建冗余机械臂液压驱动机构平面运动简图,采用负载传感系统控制液压泵排量.建立机械臂动力学模型,构造目标函数并添加约束条件,对动态系统进行离散化.... 详细信息

冗余机械臂液压驱动系统在执行任务时,消耗能源比较严重,从而造成了资源浪费.对此,创建冗余机械臂液压驱动机构平面运动简图,采用负载传感系统控制液压泵排量.建立机械臂动力学模型,构造目标函数并添加约束条件,对动态系统进行离散化.采用动态规划算法对目标函数进行优化,搜索出最优调节控制策略.结合具体实例,采用Matlab软件对机械臂液压驱动系统能量消耗进行仿真.结果表明:机械臂液压系统采用动态规划算法优化后,其消耗的功率较小.采用动态规划算法优化冗余机械臂液压驱动系统,能够节约资源,提高液压驱动系统运动的稳定性.

关键词：动态规划算法冗余机械臂液压系统能量