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2022 8th International Conference on Energy Efficiency and Agricultural Engineering (EE&AE)最新文献

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Indoor air measurements for particle pollution 室内空气颗粒污染测量
L. Popescu, R. Popescu
Many research papers deal with the influence of indoor air particulate pollution related to human health. People usually spend most of the time indoors, so the air quality is very important. Bucharest is one of the most polluted city in Europe concerning particle matter. Almost every day the concentration outdoors is higher than the maximum limit, that's why fast measures to limit particle pollution should be found and implemented accordingly. The originality of the present paper is to show the influence of particles' concentration as a function of: activity type, season (autumn, winter), and also the indoor air cleaning device influence over the concentration of particles. The final purpose of the study aims to present measures to reduce particle pollution, for cities having a high concentration levels. Using particle counters of new generation, laser aerosol Grimm 11E type, accurate results will be provided for PM2.5, PM1 and PM10. Comparison between different locations studied and different indoor activities are interesting to be presented in the present research.
许多研究论文涉及室内空气微粒污染对人体健康的影响。人们通常大部分时间都在室内度过,所以空气质量非常重要。布加勒斯特是欧洲粒子污染最严重的城市之一。几乎每天室外的浓度都高于最大限度,这就是为什么应该找到并实施限制颗粒污染的快速措施。本文的创新之处在于将颗粒物浓度的影响表现为:活动类型、季节(秋季、冬季)以及室内空气净化装置对颗粒物浓度的影响。这项研究的最终目的是为高浓度的城市提出减少颗粒污染的措施。采用新一代激光气溶胶格林11E型粒子计数器,提供准确的PM2.5、PM1和PM10结果。比较不同的研究地点和不同的室内活动是本研究的有趣之处。
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引用次数: 1
Research of the need for training financial literacy under economic uncertainty in the framework of the educational process at schools 经济不确定性下学校教育过程中金融素养培养的必要性研究
Sargu Lilia, V. Yulia, Gatina Elvira Arslanovna, Yelesin Evgeniy Yurievich
This The authors identified the current issue of developing entrepreneurial and economic skills from an early age and proposed further research that will affirm or refute this topic. Being university teachers, they observed that the promotion of economic, financial and monetary values can be initiated from school and continued in high school for perfection. A financially educated society is much easier to convince in the case of the state to form fiscal policies, to form monetary strategies, to accept loans, to form financial support programs for both individuals and legal entities. As a result of the widespread research on financial literacy in European countries and China, it is established that the highest level of financial literacy is held by men, as well as students from full-fledged families and parents with a high level, sector level, and literacy through the need to discuss these issues regarding the risks of sakh.com transactions. We conducted a survey of Kazan University students that established the need for and importance of introducing a special financial literacy course into the school process. Competent use of own financial resources to those identified, investment implementation relationship, educational projects, research competitions, financial literacy events among schoolchildren, students and the volume of deposits in banking structures. The higher the level of financial literacy, the more people invest, even in the banking sector
作者指出了从小培养创业和经济技能的当前问题,并提出了进一步的研究,以肯定或反驳这一主题。作为大学教师,他们观察到经济、金融和货币价值观的促进可以从学校开始,并在高中继续完善。一个受过金融教育的社会更容易说服国家制定财政政策,制定货币战略,接受贷款,为个人和法人实体制定财政支持计划。由于对欧洲国家和中国金融素养的广泛研究,通过讨论有关sakh.com交易风险的这些问题,可以确定,拥有最高水平金融素养的是男性,以及来自成熟家庭的学生和具有高水平,部门水平和素养的父母。我们对喀山大学的学生进行了一项调查,确定了在学校过程中引入特殊的金融知识课程的必要性和重要性。将自己的财政资源恰当地用于那些确定的项目、投资执行关系、教育项目、研究竞赛、学童和学生之间的金融知识活动以及银行结构中的存款数量。金融知识水平越高,投资的人就越多,甚至在银行业也是如此
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引用次数: 0
Analysis of a PV Installation with a Battery Storage and BMS at a Residential Building 某住宅楼光伏电池储能系统及BMS系统分析
K. Simeonov, N. Mihailov, N. Valov, K. Gabrovska-Evstatieva
This study presents some results and analysis from the exploitation of a grid-connected PV installation with battery storage, operated in a residential building. The installation is made of a 4810 Wp photovoltaic system, an inverter and a 12 kWh Li-Ion battery storage. Furthermore, a battery management system (BMS) is used to provide passive balancing of the cells, as well as for monitoring different energy parameters of the system. The inverter determines the operation mode of the system as either bypass or battery mode, depending on the available and consumed power. The study also presents some results for typical sunny and cloudy days and analyzes the system’s exploitation efficiency.
本研究提出了一些结果和分析,从开发与电池存储并网的光伏装置,在一个住宅建筑运行。该装置由一个4810 Wp光伏系统、一个逆变器和一个12 kWh锂离子电池储能系统组成。此外,电池管理系统(BMS)用于提供电池的无源平衡,以及监测系统的不同能量参数。逆变器根据可用功率和消耗功率确定系统的运行模式为旁路模式或电池模式。给出了典型晴天和阴天的一些结果,并分析了系统的开发效率。
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引用次数: 2
Outdoor air measurements with mobile laboratory in Bucharest 布加勒斯特移动实验室的室外空气测量
R. Popescu, L. Popescu
In this paper outdoor air pollution measurements are presented, from the Technical University of Construction campus located in Bucharest, Romania. A modern mobile laboratory is used to measure outdoor concentration levels of pollutants. Rainy and sunny days are compared, as well as cold and hot sunny days. Continuous measurements concern the following air components: CO, particulates (PM10 and PM2,5), O3, SO2, NO, NO2, NOx, BTEX (benzene, toluene, o,m,p-xylene and ethylbenzene), as well as meteorological conditions as: wind speed/direction, solar radiation, temperature and RH. All these measurements are very important because Bucharest city has a one of the highest levels of pollution in Europe, so there is a great concern of introducing quick measures to decrease pollution levels outdoors.
本文介绍了位于罗马尼亚布加勒斯特的建筑技术大学校园的室外空气污染测量。一个现代化的移动实验室被用来测量室外污染物的浓度水平。雨天和晴天的比较,以及冷和热的晴天。连续测量涉及以下空气成分:CO,颗粒物(PM10和PM2,5), O3, SO2, NO, NO2, NOx, BTEX(苯,甲苯,o,m,对二甲苯和乙苯),以及气象条件:风速/方向,太阳辐射,温度和相对湿度。所有这些措施都非常重要,因为布加勒斯特市是欧洲污染水平最高的城市之一,因此非常关注引入快速措施来减少室外污染水平。
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引用次数: 1
Neural Network a Way to Forecast the Generation of Electricity From a Wind Turbine 神经网络预测风力发电的方法
I. Metodieva, Stoyan Hristov Bozhkov
This report reviews the main factors influencing the performance and productivity of wind energy sources. These sources function mainly as mains-connected, which affects both the quality of the voltage and the reliability of the electrical networks to which they are connected. It is essential for the realization of uninterrupted power supply to perform an accurate forecast analysis of the electricity produced by these sources. For the purposes of forecasting, an artificial intelligence device is presented. The purpose of the report is defined, namely to create a neural network through which to forecast the electricity produced by a wind generator. The operability of the developed model was assessed. To achieve this goal, an interactive system for numerical calculations, analysis and graphs - MATLAB / Toolbox / NNtool was used. The article is structured as follows: The first and second parts of the report present the problem related to forecasting the production of electricity from wind sources. A modern, possible solution to the problem by using a neural network is presented. In the third part of the report, a neural network for predicting the production of electricity from a wind turbine has been set up. The main steps in creating the network are described, the accuracy of its work is assessed. In the last part, based on the research, conclusions are drawn.
本报告综述了影响风能性能和生产力的主要因素。这些电源的功能主要是作为电源连接,这既影响电压的质量,也影响它们所连接的电网的可靠性。对这些电源产生的电力进行准确的预测分析是实现不间断供电的关键。为了达到预测的目的,提出了一种人工智能设备。报告的目的是明确的,即创建一个神经网络,通过它来预测风力发电机产生的电力。评估了所开发模型的可操作性。为了实现这一目标,使用了一个用于数值计算、分析和图形的交互式系统- MATLAB / Toolbox / NNtool。本文的结构如下:报告的第一和第二部分提出了与预测风力发电有关的问题。本文提出了一种现代可行的神经网络解决方案。在报告的第三部分,建立了一个用于预测风力涡轮机发电量的神经网络。描述了创建网络的主要步骤,并对其工作的准确性进行了评估。最后,在研究的基础上,得出结论。
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引用次数: 1
Influence of Non-traditional Organic Fertilizers on Spring Wheat Harvest and Carbon Dioxide Emission from Soil 非传统有机肥对春小麦收成及土壤二氧化碳排放的影响
V. M. Lapushkin, A. A. Lapushkina, Stepan Y. Smirnov, Y. Enakiev
The influence of non-traditional organic fertilizers on the yield and quality of spring wheat of the Lyubava variety was determined. During the research, the following nontraditional organic fertilizers were used: biohumus, Golden Fairy biofertilizer (biosludge from biogas production) and manure. The studies were carried out under the conditions of a microfield experiment, in nitrogen-equivalent doses. The influence of the use of manure, mineral fertilizers in an equivalent dose and their combination on the main indicator of grain quality - the content of crude protein was studied. The amount of carbon dioxide emissions from the soil from the application of vermicompost and residues from biogas production was determined in com-parison with the application of manure.
研究了非传统有机肥对柳巴娃品种春小麦产量和品质的影响。在研究过程中,使用了以下几种非传统有机肥:生物腐殖质、金仙女有机肥(沼气生产产生的生物污泥)和粪肥。这些研究是在微场实验条件下进行的,以氮当量剂量进行。研究了等量施用有机肥、矿物肥及其组合对粮食品质主要指标粗蛋白质含量的影响。与施用粪肥相比,测定了施用蚯蚓堆肥和沼气生产残留物从土壤中排放的二氧化碳量。
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引用次数: 0
A new method for testing Peltier modules 一种测试Peltier模块的新方法
Radostin Kasarov
This paper presents the results of the application of a new approach to the study of thermoelectric components. Six single-stage Peltier modules, models TEC1-12706 and TEC1-12706SR, were measured. A pulse-echo contact ultrasonic technique and 10 MHz frequency dual transducer was used to determine thicknesses of ceramic plates at many points of their surfaces. Variation of the results for different modules and plates were obtained. Additional reliability factor was introduced to estimate the temperature deviations as a function of thickness. Comparative results of studied modules can be used for quality selection in the design of electronic components and devices. The proposed ultrasonic method for measuring the thickness of ceramic plates is effective enough to be part of the control and testing procedure.
本文介绍了一种新方法在热电元件研究中的应用结果。测量了6个单级Peltier模块,型号TEC1-12706和TEC1-12706SR。采用脉冲回波接触超声技术和10mhz频率双换能器对陶瓷板表面多个点的厚度进行了测量。得到了不同模块和板的结果差异。引入额外的可靠性因子来估计温度偏差作为厚度的函数。所研究模块的比较结果可用于电子元件和器件设计的质量选择。所提出的测量陶瓷板厚度的超声方法是有效的,足以成为控制和测试程序的一部分。
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引用次数: 0
Harmonic Compensation in Ship Power System Using p-q Theory Control Based Shunt Active Power Filter 基于p-q理论控制的船舶电力系统谐波补偿并联有源滤波器
Dimitar Tsvetanov, N. Djagarov, Z. Grozdev, J. Djagarova
Nowadays, with the increased proliferation of nonlinear loads used in the ship's power systems, the issue of improving and maintaining the power quality is rising as well. The caused deterioration can lead to disturbance in the operation of the electrical equipment and overall disruption of the system stability. To avoid these consequences, different approaches, such as the application of passive, active filters, or other devices, can be used. The present paper describes the implementation of a shunt active power filter (SAPF) with a p-q theory-based control system in a ship's electrical power system, aiming to reduce the total harmonic distortion (THD) at the point of common coupling (PCC) of nonlinear loads. By proposition of an accurate mathematical model of a ship's power system and simulation of different case studies, the disturbance in the system with and without SAPF connected is observed and analyzed.
随着船舶电力系统中非线性负荷的增加,提高和保持电力质量的问题也日益突出。这种劣化会导致电气设备的运行受到干扰,从而破坏整个系统的稳定性。为了避免这些后果,可以使用不同的方法,例如应用无源、有源滤波器或其他设备。本文介绍了一种基于p-q理论的并联有源电力滤波器(SAPF)控制系统在船舶电力系统中的实现,旨在降低非线性负载共耦合点的总谐波失真(THD)。通过提出船舶动力系统的精确数学模型,并对不同的实例进行仿真,观察和分析了有和没有SAPF连接的系统中的扰动。
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引用次数: 4
Tolerance Analysis of SEPIC DC-DC Converter SEPIC DC-DC变换器公差分析
N. Hinov, T. Hranov, B. Gilev
The paper presents tolerance analysis of SEPIC DC-DC converter. Based on a verified model, the influence of the accuracy of the magnetic components and the capacitors on the output indicators of the selected power electronic device is determined. In the study, the variation of the values of the elements was chosen to be performed in pairs, and due to the peculiarities of the power scheme the change of the inductors L1 and L2 is performed jointly, although a variant without magnetic coupling between them was chosen. Accurate quantitative assessment of this impact on the operating mode is presented in tabular form and through 3D graphs. In this way, the optimal selection of circuit elements is made at the design stage. The presented results are also useful for studying the stability and synthesis of optimal control of SEPIC DC/DC converter.
本文介绍了SEPIC DC-DC变换器的容差分析。在验证模型的基础上,确定了磁性元件和电容器的精度对所选电力电子器件输出指标的影响。在研究中,元件的值的变化选择成对进行,并且由于功率方案的特殊性,电感器L1和L2的变化是共同进行的,尽管它们之间选择了一个没有磁耦合的变体。这种对运行模式的影响的准确定量评估以表格形式和三维图形呈现。这样,在设计阶段就对电路元件进行了优化选择。本文的研究结果对SEPIC DC/DC变换器的稳定性和最优控制的综合研究也有一定的参考价值。
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引用次数: 0
Identification of Lighting Clouds Presented by Electric Dipole 电偶极子呈现的闪电云识别
A. Chervenkov
Identification of a moving lightning cloud is being carried out. The lightning cloud is seen as an electric dipole. The electromagnetic field distribution in moving environments is considered. For determination of the electromagnetic field, electromagnetic model and relativistic approach are used. A four-dimensional potential is applied. The magnetic vector potential and the scalar electric potential are the elements of four-dimensional potential. The Maxwell tensor is used to determine the vectors of the electromagnetic field. The electric field vector components of the electric dipole are obtained. The quality of dipole charge, its coordinates and velocity are determined by solving the inverse problem. To solve the inverse problem, the obtained analytical expressions for the components of the electric field, created by a moving electric dipole, are used.
正在对移动的闪电云进行识别。闪电云被看作是电偶极子。考虑了运动环境下的电磁场分布。电磁场的确定采用了电磁学模型和相对论方法。应用四维势。磁矢量势和标量势是四维势的组成部分。麦克斯韦张量用来确定电磁场的矢量。得到了电偶极子的电场矢量分量。通过求解反问题,确定了偶极电荷的性质、坐标和速度。为了解决反问题,使用了得到的由移动电偶极子产生的电场分量的解析表达式。
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引用次数: 0
期刊
2022 8th International Conference on Energy Efficiency and Agricultural Engineering (EE&AE)
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