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An initial evaluation of humidified discharge cycle for liquid air energy storage 用于液态空气储能的加湿放电循环初步评估
Pub Date : 2024-07-31 DOI: 10.1088/1755-1315/1380/1/012004
Ana Borissova, Kaloyan Hristov and Dimityr Popov
The research community is becoming more interested in liquid air energy storage among the leading innovative technologies for long duration and grid-scale energy storage. Practical Uses of liquid air energy storage are currently somewhat limited, though, mostly due to the intricate design of LAES plants and the poor “roundtrip efficiency” that is the ratio of the energy recovered from the LAES system during the discharge cycle to the total energy input. With so many components already present in the LAES plant, nearly every research project underway adds even more complexity to the mix. The objective of the work that is being presented aims to increase the use of the heat of compression that has been stored during the charging without adding additional complexity. A mixture of water vapour and air, or humidified air, serves as the working fluid in the presented concept. Thermodynamic performance of the proposed discharge configuration is evaluated and compared on a consistent basis with the stand alone LAES system. The results demonstrate significant increase in the roundtrip efficiency.
液态空气储能是用于长时间和电网规模储能的领先创新技术,研究界对液态空气储能越来越感兴趣。不过,液态空气储能的实际用途目前还比较有限,这主要是由于液态空气储能设备设计复杂,"往返效率 "较低,而 "往返效率 "是指在放电循环期间从液态空气储能系统回收的能量与总输入能量之比。由于 LAES 发电站中已有如此多的组件,几乎所有正在进行的研究项目都会增加其复杂性。目前正在进行的工作旨在提高充注过程中存储的压缩热的利用率,而不会增加额外的复杂性。水蒸气和空气或加湿空气的混合物是该概念中的工作流体。对所提出的排放配置的热力学性能进行了评估,并与独立的 LAES 系统进行了比较。结果表明,往返效率显著提高。
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引用次数: 0
Modelling of hydrocarbon synthesis process using barrier discharge 利用阻挡放电模拟碳氢化合物合成过程
Pub Date : 2024-07-31 DOI: 10.1088/1755-1315/1380/1/012008
I.K. Iliev, A. R. Gizzatullin, A. A. Filimonova, N. D. Chichirova, V.E. Malanichev and Plamen G. Kangalov
A computational model for hydrocarbon synthesis by natural gas decomposition using barrier discharge is presented. The model describes the kinetics of the main reactions occurring in the plasma and accounts for the following processes: excitation/relaxation by direct electron impact, decomposition and ionization by electron impact, charge loss due to diffusion to the walls, and 92 chemical reactions. The rates of hydrocarbon production under various discharge parameters and changes in the composition of the starting gas have been calculated. The calculated rates of hydrocarbon production and discharge parameters were correlated with experimental data. The deviation of the calculated electrical parameters from the experiment does not exceed 7%. The model also demonstrated high accuracy in terms of product selectivity and their production rates. The calculations showed a promising result that the synthesis process efficiency depends on the signal shape while maintaining constant power input into the discharge.
介绍了利用阻挡放电分解天然气合成碳氢化合物的计算模型。该模型描述了等离子体中发生的主要反应的动力学,并考虑了以下过程:电子直接撞击产生的激发/弛豫、电子撞击产生的分解和电离、扩散到壁面造成的电荷损失以及 92 个化学反应。计算了在不同放电参数和起始气体成分变化条件下的碳氢化合物生产率。计算得出的碳氢化合物产生率和放电参数与实验数据相关。计算得出的电参数与实验数据的偏差不超过 7%。该模型在产品选择性及其生产率方面也表现出很高的准确性。计算结果表明,合成过程的效率取决于信号的形状,同时保持恒定的放电功率输入。
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引用次数: 0
Simulation of winter heat fluxes through a clay wall with added wheat straw using the finite element method 利用有限元法模拟冬季通过添加了小麦秸秆的粘土墙的热通量
Pub Date : 2024-07-31 DOI: 10.1088/1755-1315/1380/1/012007
L Tashkov and P Zlateva
This study focuses on the simulation of heat transfer through a brick wall using an experimental model of unfired ceramic bricks with different additions of wheat straw. A digital model of the wall was created using computer software. Using the finite element method, the behavior of the external brick wall of a residential building is analyzed under changing external temperatures and constant internal temperature. The analysis process is divided into two main parts. The first part covers the stationary problem, which determines the temperature distribution in the wall. In the second part, this solution serves as an initial condition for dynamic analysis. This approach allows investigating how the wall responds to heat by analyzing the dynamic temperature distribution, heat flow and stored energy in the wall. The analyzes will serve to improve the energy efficiency and comfort of residential buildings.
本研究的重点是利用一个未烧制陶瓷砖的实验模型,通过不同的小麦秸秆添加量,模拟砖墙的传热情况。使用计算机软件创建了砖墙的数字模型。使用有限元方法分析了住宅楼外砖墙在外部温度变化和内部温度恒定的情况下的行为。分析过程分为两个主要部分。第一部分涉及静态问题,即确定墙内的温度分布。在第二部分中,该解决方案可作为动态分析的初始条件。这种方法可以通过分析动态温度分布、热流和墙体中的储能来研究墙体如何对热量做出反应。分析结果将有助于提高住宅建筑的能效和舒适度。
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引用次数: 0
Peer Review Statement 同行评审声明
Pub Date : 2024-07-31 DOI: 10.1088/1755-1315/1379/1/011002
All papers published in this volume have been reviewed through processes administered by the Editors. Reviews were conducted by expert referees to the professional and scientific standards expected of a proceedings journal published by IOP Publishing. 1. Type of peer review: Single anonymous 2. Conference submission management system: Morressier 3. Number of submissions received: 46 4. Number of submissions sent for review: 46 5. Number of submissions accepted: 39 6. Acceptance Rate (Submissions Accepted / Submissions Received × 100): 84,78 % 7. Average number of reviews per paper: 1.00 8. Total number of reviewers involved: 15 9. Contact person for queries: Name: Ulfa Adzkia Affiliation: IPB University Email: ulfaadzkia@apps.ipb.ac.id
本卷中发表的所有论文均已通过编辑部的审核。审稿专家按照 IOP 出版社出版的论文集期刊应有的专业和科学标准进行审稿。1.同行评审类型:单一匿名 2.会议投稿管理系统:Morressier 3.收到的提交材料数量: 46 4:送审材料数量:46 5:46 5. 接受的提交材料数量:39 6:39 6. Acceptance Rate (Submissions Accepted / Submissions Received × 100):84,78 % 7.每篇论文的平均评审次数:1.00 8:1.00 8.参与评审的总人数: 15 9:15 9. 联系人姓名:Ulfa Adzkia Affiliation:IPB University Email: ulfaadzkia@apps.ipb.ac.id
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引用次数: 0
Detection of new oil palm fruit bunches based on deep learning 基于深度学习的新油棕果穗检测
Pub Date : 2024-07-31 DOI: 10.1088/1755-1315/1379/1/012003
Harmiansyah, E P Sembiring, E T Oviana and Supriyanto
The Indonesian oil palm plantation experiences a production rate of fresh fruit bunches and crude palm oil (CPO) influenced by the quality of fruits with excellent and uniform maturity accepted by the palm oil processing factory. The uniformity of fruit quality produced from the harvesting process through fruit maturity criteria, namely fractions 00, fraction 1, fraction 3, and fraction 4, necessitates the need for maturity detection based on deep learning with a pre-trained YOLOv5 model capable of detecting the maturity of new oil palm fruit bunches. The aim is to develop a deep learning-based maturity detection model based on visual images and analyse the deep learning algorithm’s performance by classifying the maturity level of new oil palm fruit bunches. The method collects a dataset of new oil palm fruit bunches with 4180 images. The collected dataset will be annotated with Roboflow, so the annotation results will undergo training, validation, and testing processes using the deep learning script. The result obtained for the data found to detect the ripeness levels of Fresh Fruit Bunches (FFB), shows that the YOLOv5 model demonstrates strong performance with an accuracy reaching 72.5% in testing, which falls into the category of fair annotation. These results indicate that the system created and used is functioning well.
印度尼西亚油棕种植园的鲜果串和毛棕榈油(CPO)生产率受到棕榈油加工厂所接受的成熟度优良且均匀的果实质量的影响。通过果实成熟度标准(即馏分 00、馏分 1、馏分 3 和馏分 4),采收过程中产生的果实质量具有一致性,因此需要基于深度学习的成熟度检测,预先训练的 YOLOv5 模型能够检测新油棕果穗的成熟度。目的是开发基于视觉图像的深度学习成熟度检测模型,并通过对新油棕果穗的成熟度进行分类来分析深度学习算法的性能。该方法收集了一个包含 4180 幅图像的新油棕果穗数据集。收集到的数据集将使用 Roboflow 进行标注,因此标注结果将使用深度学习脚本进行训练、验证和测试。针对检测新鲜果穗(FFB)成熟度的数据所获得的结果显示,YOLOv5 模型表现出强劲的性能,测试准确率达到 72.5%,属于公平注释类别。这些结果表明,所创建和使用的系统运行良好。
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引用次数: 0
Potential for developing an intercropping system on oil palm fields in peatlands 在泥炭地油棕田发展间作系统的潜力
Pub Date : 2024-07-31 DOI: 10.1088/1755-1315/1379/1/012004
Y F Arifin, I Noor, A Budiman and A D Wibowo
Planting using a monoculture method is believed to impact the diversity of plant species on oil palm plantations, especially on peatlands, so the discourse on cultivating oil palm plantations using a polyculture system is to enrich species and avoid fears of environmental damage. It is necessary to conduct a study to determine the potential impact of an intercropping system between oil palm and other crops on the Land Equivalent Ratio (LER) value, intra and interspecific competition between plants, and reducing soil fertility. Data was obtained through a literature review and Forum Group Discussion (FGD) in a quadruple helix system comprising academia, farmer groups, district plantation services, and companies. Various literature studies showed that polyculture planting with an intercropping system reduces or inhibits palm oil production in peatland, but it can increase LER > 1.5. This is in line with the results of the FGD, which shows that planting using an intercropping system causes delays in palm oil production; consequently, the farmers and palm oil companies prefer monoculture planting. However, from the results of the FGD, a solution was obtained to overcome the above problems by arranging the planting distance when planting was planned, namely with a broader distance of 10 x 10 m or with a population of 100-110 plants per hectare, so that there is enough space to carry out intercropping and reduce competition. The results showed that polyculture planting with an intercropping system could also enrich plant species, apart from having the potential to increase LER > 1.5.
人们认为,采用单一种植方法会影响油棕种植园植物物种的多样性,尤其是在泥炭地上,因此,关于采用多元种植系统种植油棕种植园的讨论是为了丰富物种,避免对环境造成破坏的担忧。有必要开展一项研究,以确定油棕与其他作物间作系统对土地等值比(LER)值、植物种内和种间竞争以及土壤肥力下降的潜在影响。数据是通过文献综述和论坛小组讨论(FGD)获得的,论坛小组是由学术界、农民团体、地区种植服务机构和公司组成的四重螺旋系统。各种文献研究表明,采用间作系统进行多品种种植会降低或抑制泥炭地的棕榈油产量,但却能提高 LER > 1.5。这与 FGD 的结果一致,即采用间作系统种植会导致棕榈油生产延迟;因此,农民和棕榈油公司更倾向于单作种植。不过,从专题小组讨论的结果中得出了克服上述问题的解决方案,即在规划种植时安排好种植距离,即种植距离为 10 x 10 米或每公顷种植 100-110 株,这样就有足够的空间进行间作套种,减少竞争。结果表明,采用间作系统进行多茬种植,除了有可能使 LER > 1.5 增加外,还能丰富植物种类。
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引用次数: 0
The effect of mycorrhiza on the growth of Ylang-Ylang seedlings 菌根对依兰树苗生长的影响
Pub Date : 2024-07-31 DOI: 10.1088/1755-1315/1379/1/012005
Y M M Anita Nugraheni, Irdika Mansur and Erina Sulistiani
Ylang-ylang (Cananga odorata forma genuina Steenis) is a plant with high economic value and many benefits. Mycorrhizal application is necessary to obtain a quality mother plant. Therefore, a study on the mycorrhiza effect on ylang-ylang growth was needed, especially in the seedling stage. This study aimed to analyse the impact of mycorrhiza infection on the development of ylang-ylang seedlings. The method used in this study was the isolation of Claroideoglomus etunicatum spores. Ten of each spore was inoculated onto the sterilised roots (using 5% Natrium hypochlorite) of the three-month-old ylang-ylang seedlings and then planted on zeolite media and soil in a 6 x 10 cm pottery, which was then transferred to each pot 13 cm in diameter and 16 cm in height. For comparison, zeolite and soil media were used without the addition of mycorrhiza. The result of this study showed that the application of mycorrhizae using soil media had the highest increase in height (4.19 cm), diameter (0.72 mm), number of leaves (2.6 strands), and number of buds (0.8 leaf buds) compared to other treatments.
依兰(Cananga odorata forma genuina Steenis)是一种具有很高经济价值和许多益处的植物。要获得优质的母株,就必须施用菌根。因此,有必要研究菌根对依兰生长的影响,尤其是在幼苗阶段。本研究旨在分析菌根感染对依兰幼苗生长的影响。本研究采用的方法是分离 Claroideoglomus etunicatum 孢子。每种孢子 10 个,接种到三个月大的依兰幼苗已消毒的根部(使用 5%次氯酸纳),然后种植在沸石培养基和土壤上,陶器为 6 x 10 厘米,然后转移到每个直径 13 厘米、高 16 厘米的花盆中。作为对比,沸石和土壤介质均未添加菌根。研究结果表明,与其他处理相比,使用土壤介质施加菌根的处理在高度(4.19 厘米)、直径(0.72 毫米)、叶片数(2.6 股)和芽数(0.8 个叶芽)方面的增幅最大。
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引用次数: 0
Basics of the advanced calculating method the fire resistance of the section of an eccentrically compressed reinforced concrete element 偏心受压钢筋混凝土构件截面耐火性能先进计算方法的基础知识
Pub Date : 2024-07-01 DOI: 10.1088/1755-1315/1376/1/012009
S V Butenko, M V Iakymenko, S M Koliesnikov
The paper considers the issue of some special features in fire resistance calculations of an eccentrically compressed reinforced concrete element and propose new approach for calculating the fire resistance, based on the advanced formula of the stress-strain diagram for concrete depending on temperature. It has been shown that due to the change of the temperature field during a fire a change in the strength and deformation characteristics of concrete and reinforcing steel occurs as well, which, accordingly, leads to a change in eccentricity over time, that is, the eccentricity value is variable and depends both on the internal characteristics of the element (class of concrete, reinforcement) and from external factors (type of fire, time, loading). Formulas for calculating the eccentricity of an eccentrically compressed rod reinforced concrete element for a specific fixed moment of time are presented. There are also given the coordinates of the cross-section core and the center of central compression. It is possible to obtain the dynamics of changes in the eccentricity of a compressed rod reinforced concrete element during the time of the fire by doing such calculations for certain moments of time.
本文探讨了偏心受压钢筋混凝土构件耐火计算中的一些特殊特征,并根据混凝土应力-应变图的高级公式(取决于温度),提出了计算耐火性的新方法。研究表明,由于火灾期间温度场的变化,混凝土和钢筋的强度和变形特性也会发生变化,从而导致偏心率随时间变化,也就是说,偏心率值是可变的,既取决于构件的内部特性(混凝土等级、钢筋),也取决于外部因素(火灾类型、时间、荷载)。文中给出了计算偏心受压杆件钢筋混凝土构件在特定固定时刻的偏心率的公式。此外,还给出了截面核心和中心压缩中心的坐标。通过对特定时刻的计算,可以获得火灾期间受压杆件钢筋混凝土构件偏心率的动态变化。
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引用次数: 0
Methods and Models of Urban Planning for Sustainable Development Processes in Agglomerations 促进城市群可持续发展进程的城市规划方法和模式
Pub Date : 2024-07-01 DOI: 10.1088/1755-1315/1376/1/012045
Uhodnikova Olena, Kostiantyn Viatkin, Kolodezny Andrii
In the context of continuous population density growth in urban agglomerations and escalating challenges in ensuring sustainable development, there is a need to enhance methods and models of urban planning management to ensure the sustainable development of territories. One of the key issues is the effective management of sustainable development processes in agglomerations, taking into account population growth dynamics, environmental issues, social challenges, and infrastructure needs. The aim of this research is the development and analysis of methods and models of urban planning management aimed at supporting the sustainable development of agglomerations. The research focuses on urban agglomerations as the object of study and methods and models of urban planning management as the subject of study. The study utilizes the analysis and synthesis of existing models of managing urban agglomerations, statistical analysis of population dynamics and infrastructure data, as well as surveys of stakeholders. The author has conducted an analysis of existing methods of managing urban planning processes and developed new models aimed at achieving the sustainable development of agglomerations. The research takes into account various aspects, including housing provision, transportation solutions, environmental impact, and socio-cultural sphere. The study indicates the necessity of an integrated approach to urban planning management that considers the multifaceted nature of sustainable development in agglomerations. The research recommendations include the implementation of innovative technologies, strengthening social partnerships, and ensuring effective infrastructure to secure a sustainable future for urban agglomerations.
在城市群人口密度持续增长和确保可持续发展的挑战不断升级的背景下,有必要加强城市规划管理的方法和模式,以确保领土的可持续发展。考虑到人口增长动态、环境问题、社会挑战和基础设施需求,有效管理城市群的可持续发展进程是关键问题之一。这项研究的目的是开发和分析旨在支持城市群可持续发展的城市规划管理方法和模式。研究以城市群为研究对象,以城市规划管理的方法和模式为研究课题。研究利用了对现有城市群管理模式的分析和综合、对人口动态和基础设施数据的统计分析以及对利益相关者的调查。作者对现有的城市规划过程管理方法进行了分析,并开发了旨在实现城市群可持续发展的新模式。研究考虑到了各个方面,包括住房供给、交通解决方案、环境影响和社会文化领域。研究表明,必须采用综合方法进行城市规划管理,考虑到城市群可持续发展的多面性。研究建议包括实施创新技术、加强社会伙伴关系和确保有效的基础设施,以确保城市群的可持续未来。
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引用次数: 0
Peer Review Statement 同行评审声明
Pub Date : 2024-07-01 DOI: 10.1088/1755-1315/1376/1/011002
Proceedings: International Conference on Urban Infrastructure Sustainable Development and Renovation (MistoBud-2023)January 25-27, 2024 - Kharkiv, UkraineAll papers published in this volume have been reviewed through processes administered by the Editors. Reviews were conducted by expert referees to the professional and scientific standards expected of a proceedings journal published by IOP Publishing.1. Type of peer review: Double anonymous2. Conference submission management system: Morressier3. Number of submissions received: 784. Number of submissions sent for review: 785. Number of submissions accepted: 486. Acceptance Rate (Submissions Accepted / Submissions Received × 100): 61.5 %7. Average number of reviews per paper: 28. Total number of reviewers involved: 189. Contact person for queries:Name: Glib VatuliaAffiliation: O.M.Beketov National University of Urban Economy in KharkivEmail: glib.vatulia@kname.edu.ua
论文集:城市基础设施可持续发展与翻新国际会议(MistoBud-2023)2024 年 1 月 25-27 日--乌克兰哈尔科夫本卷中发表的所有论文均已通过由编辑管理的程序进行审核。专家审稿人按照 IOP 出版社出版的论文集期刊应有的专业和科学标准进行审稿。 1. 同行评审类型:双匿名2。会议投稿管理系统:Morressier3.收到的投稿数量:784.送审材料数量: 785:785.接受的投稿数量486.录用率(录用稿件/收到稿件 × 100):61.5 %7.每篇论文的平均审阅次数28.审稿人总数189.联系人: 姓名:Glib VatuliaAffiliation:哈尔科夫 O.M.Beketov 国立城市经济大学电子邮件: glib.vatulia@kname.edu.ua
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引用次数: 0
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IOP Conference Series: Earth and Environmental Science
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