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Optimization of Combined Photovoltaic with Hydrogen Production System by Electrolysis - Comparison Between Floating and Rooftop PV in Java Island 光伏与电解制氢联合系统的优化——爪哇岛漂浮式与屋顶式光伏的比较
Heri Dwi Dwi Sulistyo, Arzil Harsya, Abeth Novria Sonjaya, B. Priyono
The most prominent element contained in this universe is Hydrogen. The energy density of nearly three times that the gasoline will become alternative energy for the future, especially for large-scale needs. Indonesia is an archipelago country where 2/3 of it is water. Water can separate the H2 and O2 elements through an electrolysis process with a purity level above 99%. Indonesia is also awarded as a tropical country where the sun shines all year round. And the electrolysis process can use this free energy to separate the Hydrogen and Oxygen. This paper will inform the results of a combination model research between photovoltaic and Hydrogen production systems to produce Hydrogen gas in a pressure cylinder every 10 m3 with the pressure is 30 bar. Simulate each model in certain areas on Java Island. Then calculate the photovoltaic models based on the hourly irradiation rate throughout 2019. The average electricity consumption required for the calculation of H2/kg production is 49 kWh. While the measures for the LCOH sensitivity analysis use 4.1-4.75 kWh/Nm3 or 46.3-52.8 kWh/kg. The Hydrogen economy is the ultimate goal from this research that the optimal model design selection with a discount rate of 10% and a lifetime of 25 years is the primary consideration. The modeling results show that the fourth model (RPV 10 MW Banjaratma) is the most optimal in producing Hydrogen in terms of CAPEX/kW, Opex/kW/year, Power Consumption, LCOH, Income, and Residual Value/kW after 25 years running.
这个宇宙中最重要的元素是氢。能量密度接近汽油的三倍,将成为未来的替代能源,尤其适合大规模需求。印度尼西亚是一个群岛国家,三分之二的面积是水。水可以通过电解分离H2和O2元素,纯度在99%以上。印度尼西亚也被授予热带国家,那里全年阳光明媚。电解过程可以利用这种自由能来分离氢和氧。本文将介绍光伏和制氢系统之间的组合模型研究结果,该系统在压力为30 bar的压力瓶中每10 m3生产氢气。在爪哇岛的某些地区模拟每个模型。然后根据2019年全年的每小时辐照率计算光伏模型。计算H2/kg产量所需的平均用电量为49kwh。而LCOH敏感性分析的测量值为4.1-4.75 kWh/Nm3或46.3-52.8 kWh/kg。氢经济是本研究的最终目标,以折现率为10%、使用寿命为25年的最优车型设计选择为主要考虑因素。建模结果表明,第四个模型(RPV 10 MW Banjaratma)在运行25年后的CAPEX/kW, Opex/kW/年,功耗,LCOH,收入和残值/kW方面最优。
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引用次数: 0
Piping Circuit Development using K-Prototype Clustering 基于k -原型聚类的管道回路开发
Shinta Herlina Puspitasari, Arian Dhini
The oil and gas industry is one of Indonesia's vital industries, and it contributes the most to the country's foreign exchange. Piping is an important piece of equipment in the oil and gas production facilities; therefore, the piping inspection plan should be well prepared. An integral part of inspection plan development is a piping circuit; it allows an inspector to manage the necessary inspections, calculations, and better recordkeeping. A problem faced in piping circuit development is the need for relatively many working hours and variability results. Although this problem is often encountered, piping circuit development generated by manual work is still common in practice. To overcome the issues in the piping circuit development, therefore a k-prototype algorithm was introduced. A k-prototype algorithm was used to accommodate the shortcomings in grouping objects with features comprised of mixed categorical and numerical data. This study concludes that the k-prototype algorithm is a promising clustering technique that can reduce the time spent developing the piping circuit and eliminating the resulting variability.
石油和天然气行业是印尼的重要产业之一,对该国外汇的贡献最大。管道是油气生产设施中的重要设备;因此,应编制好管道检验方案。检查计划制定的一个组成部分是管道回路;它允许检查员管理必要的检查、计算和更好的记录保存。管道回路开发面临的一个问题是需要较长的工作时间和变异性结果。虽然这个问题经常遇到,但在实践中,手工生成的管道回路开发仍然很常见。因此,为了克服管道电路开发中的问题,引入了k-原型算法。采用k-prototype算法,克服了分类数据和数值数据混合特征对目标进行分组的缺点。本研究的结论是,k-prototype算法是一种很有前途的聚类技术,它可以减少开发管道回路所花费的时间,并消除由此产生的可变性。
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引用次数: 0
A Conceptual Model of CO2 Emission Reduction Using Carbon Capture Storage in West Java 西爪哇利用碳捕集储存减少二氧化碳排放的概念模型
Annis Nuraini, Andri D. Setiawan
By 2019, total Indonesia's greenhouse gas emission (GHG) amounted to 674 MtCO2e, with the energy sector as the largest contributor. Carbon capture and storage (CCS) technology is a promising alternative to reduce CO2 emission by capturing and storing the CO2 underground. However, the carbon market has undergone insignificant development as the CCS development level remains low. Acceleration of CCS development through better policies and regulation is critical to help achieving Indonesia's target to reduce GHG emission by 29% in 2030. Enhancing CCS development becomes one of the government goals. However, this goal is still arduous to achieve due to the complexity that arises in CCS development. CCS development is a complex system; uncovering such complexity could provide insights into factors that play significant roles and shed light on the possible policy options for better CCS development. Nevertheless, it is still less studied holistically from a systems perspective. This paper aims to analyze CCS development's complexity by developing a conceptual system dynamics model of CCS development in West Java as a case study. The conceptual model developed in this study has captured essential aspects of CCS development and identified three possible policy interventions to enhance the CCS development in terms of incentive, local site regulation, and environmental regulation.
到2019年,印尼的温室气体排放总量达到6.74亿吨二氧化碳当量,其中能源部门是最大的贡献者。碳捕获与储存(CCS)技术是一种很有前途的替代方案,通过捕获和储存二氧化碳在地下来减少二氧化碳的排放。然而,由于CCS发展水平较低,碳市场的发展并不显著。通过更好的政策和法规来加速CCS的发展,对于帮助印度尼西亚实现到2030年将温室气体排放量减少29%的目标至关重要。加强CCS的发展成为政府的目标之一。然而,由于CCS发展的复杂性,这一目标仍然很难实现。CCS的发展是一个复杂的系统;揭示这种复杂性可以让我们深入了解起重要作用的因素,并为更好地发展CCS提供可能的政策选择。然而,从系统的角度对其进行整体研究的仍然较少。本文以西爪哇地区CCS发展的概念系统动力学模型为例,分析了CCS发展的复杂性。本研究开发的概念模型抓住了CCS发展的重要方面,并确定了三种可能的政策干预措施,以促进CCS的发展,包括激励、地方选址监管和环境监管。
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引用次数: 0
A Conceptual Model for Contractor Assessment System in the Electricity Project with Tender 电力招标项目承包商评价体系的概念模型
Alprianto Zainuddin, Andri D. Setiawan, A. Hidayatno
The selection of an EPC Contractor in Procurement for Indonesia's electricity system faces several challenges, especially for strategic projects such as transmission and substations. The procurement of goods/services in the electricity sector considers several evaluation criteria such as technical experience, administrative requirements, prices, and how the provider has met the applicable provisions in Indonesia. This research aimed to design a conceptual model to determine the EPC Tender Process Criteria for Electricity Construction by using an experimental design approach to measure the value of the 4 (four) main criteria used in the evaluation and actual implementation of EPC contractors. This conceptual model included stakeholders involved as executors of tenders or policy-makers directly related to achieving organizational goals. The data processing method used the Multicriteria decision-making method (MCDM) such as the Analytic Network Process (ANP) and the Promethee Method.
在印尼电力系统采购中选择EPC承包商面临着几个挑战,特别是在输变电等战略项目中。电力部门的货物/服务采购考虑几个评估标准,如技术经验、行政要求、价格以及供应商如何满足印度尼西亚的适用规定。本研究旨在设计一个概念模型,通过使用实验设计方法来衡量EPC承包商评估和实际实施中使用的4(4)个主要标准的价值,从而确定EPC电力建设招标过程标准。这个概念模型包括作为投标执行者或与实现组织目标直接相关的政策制定者的利益相关者。数据处理方法采用多准则决策方法(MCDM),如分析网络过程(ANP)和Promethee方法。
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引用次数: 0
Improvement of Production Performance Using WAM & VALSAT Method in Liquid Soap Line 用WAM和VALSAT方法改进液皂生产线的生产性能
Andang Rikky Pradana, D. Ishak
Overall Equipment Effectiveness performance in liquid soap line was 47.7% in 2020 where the OEE target in liquid soap line was 60%. This research will focus on eliminating waste to improve liquid soap line's OEE performance by analyzing waste using lean manufacturing tools. The methodology that used to solve this problem is by using WAM and VALSAT method combined with Six Sigma with DMAIC concept. In define phase, Value Stream Mapping was carried out to analyze the current condition in liquid soap line. Hereinafter, in measure and analyze phase, WAM and VALSAT was carried out to obtain the identification of waste and analyze the waste which causes low OEE in liquid soap line. This happens because of frequency of change over. Frequently changeover can lead low OEE due to production without output. The queuing of materials at the freight elevator is also the cause of low productivity. In the improvement phase, the author implement remapping product and production process redesign. After implementation, OEE increased from 47.7% to 55.5% and productivity increased from 96.7% to 97.9%. In control phase, the author suggests new total productive maintenance (TPM) as the control phase. EEM pillar was added to TPM to maintain performance monitoring process in liquid soap line.
2020年液皂线整体设备效率绩效为47.7%,其中液皂线OEE目标为60%。本研究将侧重于通过使用精益制造工具分析浪费来消除浪费以提高液体肥皂生产线的OEE性能。用于解决该问题的方法是使用WAM和VALSAT方法结合六西格玛与DMAIC概念。在确定阶段,运用价值流图对液皂生产线现状进行了分析。接下来,在测量与分析阶段,采用WAM和VALSAT对液皂生产线进行废弃物识别,并对造成OEE低的废弃物进行分析。这种情况的发生是因为更换的频率。频繁的转换会导致低OEE,因为生产没有产出。物料在货梯处排队也是造成生产率低下的原因。在改进阶段,作者实施了产品重新映射和生产工艺重新设计。实施后,OEE从47.7%提高到55.5%,生产率从96.7%提高到97.9%。在控制阶段,笔者建议采用新的全面生产维护(TPM)作为控制阶段。在TPM中增加EEM支柱,以维持液皂生产线的性能监控过程。
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引用次数: 0
Optimization of Integrated Production and Distribution Planning In the Cement Industry with Multi-Site Plants Model 基于多厂模型的水泥行业产销一体化规划优化
Fuadi Sejahtera, T. Zagloel, Z. Zulkarnain
Each stage of the supply chain must be able to maximize value to achieve supply chain profitability. Handling production planning and distribution planning as a part of the supply chain are carried out to obtain optimal strategies that increase efficiency and reduce the risk of supply chain network failure. Distribution cost problems in the fulfillment of raw materials affect the total production costs as a whole. This paper proposes an integrated production and distribution planning in a multi-site plants model, in order to obtain optimal profit from production in each plant in a different location. This model uses a raw material fulfillment multi-suppliers scheme through a mixture of internal and external sources. Mixed-integer linear programming method is used for model optimization by considering production capacity constraints, demand constraints, supply constraints, production costs, logistics costs, and product revenue. Analysis of various demand conditions was applied in the multi-suppliers scheme to see the sensitivity of the parameters.
供应链的每个阶段都必须能够实现价值最大化,以实现供应链盈利。将生产计划和配送计划作为供应链的一部分进行处理,以获得提高效率和降低供应链网络故障风险的最优策略。原材料配送成本问题影响着整个生产成本。本文提出了一种多地点工厂模型下的生产与分配一体化规划,以使不同地点的每个工厂都能从生产中获得最优利润。该模型通过内部和外部来源的混合使用原材料实现多供应商方案。考虑产能约束、需求约束、供给约束、生产成本、物流成本、产品收益等因素,采用混合整数线性规划方法进行模型优化。通过对多供应商方案中各种需求条件的分析,考察了参数的敏感性。
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引用次数: 0
Modeling for Services Evaluation of Trans Bus at Surabaya Based on User's Perspective 基于用户视角的泗水公交服务评价模型
Muhammad Zulfikar Emir Zanggi, N. Arvitrida
Transportation is one of the problems faced by many countries with a high population with limited urban areas and road capacity. Another problem with the transportation system is the poor quality of services. Surabaya is one of several most populated cities in Indonesia. According to data from the Central Statistics Agency in 2018, the population in Surabaya reached 2.89 million with a population density of 8,844 people per KM2. The Government already took action about this issue. They would like to build an urban transportation system which is the trans bus, namely Suroboyo Bus. This is a pilot project from the Government to reduce congestion in Surabaya by using plastic waste as innovation payment. To build a good urban transportation system, good services of quality is a must to be implemented. Therefore, it is necessary to evaluate service quality in a measured, structured, and comprehensive way. SEM (Structural Equation Modeling) will be suited to this problem because it can accommodate the complexity of evaluation models with many constructs and indicators. Besides, SEM can provide results to the core of the research, so that researchers can determine the weight of each indicator. In the end, the researcher can provide accurate recommendations for improving the quality of services. There will be 350 respondents which are then processed through AMOS. A model is built using 28 indicators with 8 independent variables and 1 dependent variable (user satisfaction). Based on the calculation results, it shows that the model has met the assumptions and fit after the first modification was made. The output obtained is that 3 independent variables already had a positive influence on user satisfaction. Meanwhile, 5 other independent variables become input and suggestions for improvement to service providers. The five variables are connectivity, information, time, friendliness, and security.
交通是许多人口众多但城市面积和道路容量有限的国家面临的问题之一。交通系统的另一个问题是服务质量差。泗水是印度尼西亚几个人口最多的城市之一。根据中央统计局2018年的数据,泗水人口达到289万,人口密度为每平方公里8844人。政府已经就这个问题采取了行动。他们想建立一个城市交通系统,这是公交,即Suroboyo公交。这是政府的一个试点项目,旨在通过使用塑料废物作为创新付款来减少泗水的拥堵。建设良好的城市交通体系,必须落实优质的服务。因此,有必要对服务质量进行测量、结构化和全面的评价。SEM(结构方程模型)将适合于这个问题,因为它可以适应具有许多结构和指标的评估模型的复杂性。此外,SEM可以为研究的核心提供结果,以便研究人员确定各个指标的权重。最后,研究者可以为提高服务质量提供准确的建议。将有350名答复者,然后通过AMOS进行处理。模型采用28个指标,8个自变量,1个因变量(用户满意度)。计算结果表明,经过第一次修正后,模型满足假设条件,符合拟合要求。得到的输出是3个自变量已经对用户满意度产生正向影响。同时,其他5个自变量成为服务提供者的输入和改进建议。这五个变量分别是连通性、信息、时间、友好性和安全性。
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引用次数: 0
Managing the Biofuel Industry in Indonesia: A Conceptual Model of the Water-Energy-Food Nexus 管理印尼的生物燃料产业:水-能源-食物关系的概念模型
Dyah Rusty Indriani, Andri D. Setiawan, A. Hidayatno
In an attempt to increase domestic palm oil consumption, Indonesia has enforced the mandatory use of 20 per cent blended biofuel (B20). This policy is a part of the government's efforts to reduce oil dependency in energy use and greenhouse gas emissions. Nevertheless, the policy implementation is prone to affect water and food availability as the demand for biofuel crops is expected to grow significantly in the coming years. Correspondingly, a sufficient quantity of water, energy, and food resources is considered essential to achieve the sustainable development agenda. The increasing demand for all three resources undeniably places a great strain on its preservation management. On the other hand, the planning and management of these resources are under dissonant sectoral systems. This issue, which can make the balance between the three resources arduous to realize, needs to be scrutinized. The complex relationship between the three resources reflects a complex dynamic system, needing a holistic approach that considers the integration of Water-Energy-Food (WEF) nexus to understand the system better. Therefore, this study aims to understand the trade-offs between the WEF nexus on the production and utilization of biofuel. For this purpose, a conceptual system dynamics model in the form of Causal Loop Diagram is developed to analyze the complex structure of biofuel development in Indonesia from the WEF nexus perspective. The conceptual model shows that many underlying factors affecting biofuel development should be considered when formulating policy for attaining a sustainable balance between water and food resources.
为了增加国内棕榈油消费,印尼已强制要求使用20%的混合生物燃料(B20)。这项政策是政府减少能源使用和温室气体排放对石油依赖的努力的一部分。然而,由于未来几年对生物燃料作物的需求预计将大幅增长,政策的实施容易影响水和粮食的供应。相应地,充足的水、能源和粮食资源被认为是实现可持续发展议程的必要条件。不可否认,对这三种资源日益增长的需求给其保护管理带来了巨大压力。另一方面,这些资源的规划和管理是在不协调的部门制度下进行的。这一问题使三种资源之间的平衡难以实现,需要仔细研究。这三种资源之间的复杂关系反映了一个复杂的动态系统,需要一种考虑水-能源-粮食(WEF)关系整合的整体方法来更好地理解这个系统。因此,本研究旨在了解世界经济论坛关系对生物燃料生产和利用之间的权衡。为此,本文建立了因果循环图形式的概念系统动力学模型,从世界经济论坛关系的角度分析印度尼西亚生物燃料发展的复杂结构。概念模型表明,在制定政策以实现水和粮食资源之间的可持续平衡时,应考虑影响生物燃料发展的许多潜在因素。
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引用次数: 0
Improvement Put Away Process with Class-Based and Dedicated-Based Storage in Spare Part Warehouse PT. Tire Indonesia 在印尼PT轮胎公司的备品备件仓库中采用分类存储和专用存储改进备品备件流程
Ali Firmansyah, A. Pratama, T. D. Sofianti
The routine spare parts with vital criticality had 4899 items stock in the spare parts warehouse, consisting of 3778 items on the 1st floor, 1060 items on the 2nd floor, and 61 items non-location. Non-location and un-located spare parts into the rack caused by the poor put away process. It impacted on additional time of pick-up order process to search and pick-up the spare part, and possibly missing spare parts, and also it already became finding by the internal audit of PT. Tire Indonesia. This research was to identify and analyze the poor put away process then improves with class-based and dedicated-based storage. Adopting the haphazard storage in the put away process to allocate the item by considering the empty rack, might cause the poor put away process. The poor put away process impact to pick-up order process that takes time to search and non-location spare part occurred. Change the method to Class-based and dedicated-based storage provides information to allocate the spare part and create the alternative layout. The result is total throughput of the pick-up order process on the alternative layout was increased by 25 % on the 1st floor and by 56 % on the 2nd floor spare part warehouse.
日常至关重要的备件库存4899件,其中1层3778件,2层1060件,非库存61件。未入库和未入库的备件放入机架过程中摆放不当造成的。这影响了提货订单流程的额外时间来查找和提货备件,并且可能会遗漏备件,并且已经成为PT. Tire Indonesia内部审计发现的问题。这项研究是为了识别和分析糟糕的存放过程,然后通过基于类和专用的存储进行改进。在收纳过程中采用随机存储的方式,考虑空架来分配物品,可能会导致收纳过程不佳。不良的收货过程影响到取货过程,导致需要时间查找和未定位备件的情况发生。将方法更改为基于类和基于专用的存储将提供分配备件和创建替代布局的信息。结果是,在备选布局上,取货订单流程的总吞吐量在一楼增加了25%,在二楼备件仓库增加了56%。
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引用次数: 0
Proposed Site Selection Criteria for Eco-Industrial Park in Indonesia 印尼生态工业园区选址标准建议
Cindy Malinda Uscha, Rahmat Nur Cahyo, F. Farizal
The industrial sector has a vital role in the economy. A large amount of industrial activity also affected environmental pollution significantly. An eco-industrial park (EIP) is an industrial strategy to reduce environmental pollution due to industrial processes. The development of eco-industrial parks aims to obtain a sustainable industry in achieving efficiency and effectiveness in using natural resources to adapt industrial development with the sustainability and preservation of environmental function and provide benefits to the community. To build an eco-industrial park, various criteria are needed to determine a suitable site to become an EIP. This paper proposes several site selection criteria that have been identify through literature and expert assessments that consist of distance, infrastructure conditions, economic, environmental and legal. Experts assessed the research through semi-structured interviews and questionnaires. This study's results could be valuable decision-makers and practitioners as a reference in the site selection of an EIP.
工业部门在经济中起着至关重要的作用。大量的工业活动也严重影响了环境污染。生态工业园(EIP)是一种工业战略,旨在减少工业过程对环境的污染。生态工业园区的发展旨在获得可持续发展的产业,实现高效和有效地利用自然资源,使工业发展与环境功能的可持续性和保护相适应,并为社区提供利益。要建立一个生态工业园区,需要各种标准来确定一个合适的地点,成为一个生态工业园区。本文提出了几个通过文献和专家评估确定的选址标准,包括距离、基础设施条件、经济、环境和法律。专家们通过半结构化访谈和问卷调查来评估这项研究。本研究的结果可为决策者和实践者在生态园区选址时提供参考。
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引用次数: 1
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Proceedings of the 4th Asia Pacific Conference on Research in Industrial and Systems Engineering
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