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Impact of Different Solar Trackers on Hydrogen Production: A Case Study in Iran 不同太阳能跟踪器对氢气生产的影响:以伊朗为例
IF 3.2 4区 工程技术 Q3 CHEMISTRY, PHYSICAL Pub Date : 2022-10-18 DOI: 10.1155/2022/3186287
A. Mostafaeipour, M. Jahangiri, H. Saghaei, Afsaneh Raiesi Goojani, Md. Shahariar Chowdhury, K. Techato
Currently, solar energy is considered one of the most suitable options for overcoming the problems of fossil fuel depletion, and global warming. Also, the high costs associated to photovoltaic systems, renders the maximum utilization of solar cells, a fundamental and undeniable necessity. Technical-economic-environmental analysis, using HOMER software, was performed under four different scenarios: without the tracker, with the horizontal axis tracker, with the vertical axis tracker, and with the dual-axis tracker. Consequently, the best configuration was chosen for each scenario. The optimal system for all four scenarios, in the circumstance of disconnection from the grid, only involves the solar cells, while in the circumstance of connection to the grid; both the solar cells and the wind turbine are included. The results demonstrate that in the off grid situation, the scenario involving the use of a vertical axis tracker would be the most cost-effective, with the price of 0.812 $/kWh for energy produced, while the lowest price for producing one kg of hydrogen is $77.97 is attributable to the scenario without the use of a solar tracker. In the circumstance of being connected to the power grid, the scenario involving the use of a vertical axis tracker would be most cost-effective, with the price of each kWh of energy produced equal to $ 0.223. At the price of $29.33 per kilogram, the scenario involving the use of a vertical axis tracker would also be most suitable for the production of hydrogen. Another important fact revealed through the results, is the crucial role of dump load, in the provision of the heat required in an off-grid situation. However, dump load is not associated to heat provision in a grid-connected situation.
目前,太阳能被认为是克服化石燃料消耗和全球变暖问题的最合适的选择之一。此外,与光伏系统相关的高成本使得太阳能电池的最大利用成为一种基本且不可否认的必要性。使用HOMER软件,在四种不同的情况下进行了技术经济环境分析:无跟踪器、有横轴跟踪器、有纵轴跟踪器和有双轴跟踪器。因此,为每个场景选择了最佳配置。在与电网断开的情况下,所有四种情况下的最优系统只涉及太阳能电池,而在与电网连接的情况下;包括太阳能电池和风力涡轮机。结果表明,在离网情况下,使用垂直轴跟踪器的情况将是最具成本效益的,生产的能源价格为0.812美元/千瓦时,而生产一公斤氢气的最低价格为77.97美元,这归因于不使用太阳能跟踪器的情况。在连接到电网的情况下,使用垂直轴跟踪器的场景将是最具成本效益的,每千瓦时的发电价格等于0.223美元。按照每公斤29.33美元的价格,使用垂直轴跟踪器的场景也最适合氢气的生产。研究结果揭示的另一个重要事实是,在离网情况下,甩负荷在提供所需热量方面发挥着至关重要的作用。然而,在并网情况下,甩负荷与供热无关。
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引用次数: 2
Machine Learning Strategy to Achieve Maximum Energy Harvesting and Monitoring Method for Solar Photovoltaic Panel Applications 实现太阳能光伏板应用最大能量采集的机器学习策略和监测方法
IF 3.2 4区 工程技术 Q3 CHEMISTRY, PHYSICAL Pub Date : 2022-10-14 DOI: 10.1155/2022/4493116
B. Ganthia, Sudheer Hanumanthakari, Hemachandra Gudimindla, Harishchander Anandaram, M. Ramkumar, M. Mohanty, S. Gopal, Atul Sarojwal, Kibrom Menasbo Hadish
The choice of the optimal orientation of the solar panels is by far one of the most important issues in the practical application of solar installations. The use of phase changing materials (PCMs) is an efficient approach of storing solar thermal energy. Because PCMs are isothermal in nature, they provide better density energy storage and the capacity to function across a wide temperature range. Unfortunately, this feature is very rare on various solar power panels; however, ignoring it can reduce the performance of the panels to unacceptable levels. The fact is that the angle of incidence of rays on the surface greatly affects the reflection coefficient and, consequently, the role of unacceptable solar energy. In this paper, a smart energy harvesting model was proposed. In the case of glass, when the angle of incidence varies vertically from its surface to 30, the reflection coefficient is practically unchanged and slightly less than 5%, i.e., more than 95% of the radiation goes inwards. Furthermore, the reflection increase is noticeable, and the area of the reflected radiation by 60 doubles to almost 10%. At an angle of incidence of 70, it reflects 20% of the radiation, and at 80, 40%. For most other objects, the dependence of the reflection magnitude on the angle of incidence is approximately the same.
在太阳能装置的实际应用中,选择太阳能板的最佳朝向是迄今为止最重要的问题之一。相变材料(PCMs)的使用是一种有效的太阳能存储方法。由于pcm本质上是等温的,它们提供了更好的密度能量存储和在宽温度范围内工作的能力。不幸的是,这种特性在各种太阳能电池板上非常罕见;然而,忽略它可能会降低面板的性能到不可接受的水平。事实是,光线在表面上的入射角极大地影响了反射系数,从而影响了不可接受的太阳能的作用。本文提出了一种智能能量收集模型。在玻璃的情况下,当入射角从其表面垂直变化到30时,反射系数几乎不变,略小于5%,即95%以上的辐射向内射入。此外,反射增加明显,反射辐射面积增加了60倍,接近10%。当入射角为70时,反射20%的辐射,当入射角为80时,反射40%的辐射。对于大多数其他物体,反射幅度对入射角的依赖关系大致相同。
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引用次数: 3
Application of Machine Learning in Multi-Directional Model to Follow Solar Energy Using Photo Sensor Matrix 机器学习在光电传感器矩阵跟踪太阳能多向模型中的应用
IF 3.2 4区 工程技术 Q3 CHEMISTRY, PHYSICAL Pub Date : 2022-10-14 DOI: 10.1155/2022/5756610
P. Dhanalakshmi, V. Venkatesh, P. Ranjit, N. Hemalatha, S. Divyapriya, Raman Sandhiya, Sumit Kushwaha, Asmita Marathe, Mekete Asmare Huluka
In this paper, we introduce a deep neural network (DNN) for forecasting the intra-day solar irradiance, photovoltaic PV plants, regardless of whether or not they have energy storage, can benefit from the work being done here. The proposed DNN utilises a number of different methodologies, two of which are cloud motion analysis and machine learning, in order to make forecasts regarding the climatological conditions of the future. In addition to this, the accuracy of the model was evaluated in light of the data sources that were easily accessible. In general, four different cases have been investigated. According to the findings, the DNN is capable of making more accurate and reliable predictions of the incoming solar irradiance than the persistent algorithm. This is the case across the board. Even without any actual data, the proposed model is considered to be state-of-the-art because it outperforms the current NWP forecasts for the same time horizon as those forecasts. When making predictions for the short term, using actual data to reduce the margin of error can be helpful. When making predictions for the long term, however, weather information can be beneficial.
在本文中,我们引入了一种深度神经网络(DNN)来预测白天的太阳辐照度,无论光伏电站是否有储能,都可以从这里所做的工作中受益。提出的深度神经网络利用了许多不同的方法,其中两种是云运动分析和机器学习,以便对未来的气候条件进行预测。除此之外,还根据容易获得的数据源对模型的准确性进行了评估。总的来说,调查了四种不同的病例。根据研究结果,深度神经网络能够比持久算法对入射太阳辐照度做出更准确和可靠的预测。这是普遍的情况。即使没有任何实际数据,所提出的模型也被认为是最先进的,因为它在相同的时间范围内优于当前的NWP预测。在进行短期预测时,使用实际数据来减少误差范围可能会有所帮助。然而,在进行长期预测时,天气信息可能是有益的。
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引用次数: 2
An IOT Innovation of Smart Solar Energy Consumption Analysis and Control in Micro Grid 微电网智能太阳能消纳分析与控制的物联网创新
IF 3.2 4区 工程技术 Q3 CHEMISTRY, PHYSICAL Pub Date : 2022-10-12 DOI: 10.1155/2022/7506237
V. Anantha Krishnan, A. Jeba Sheela, B. Muthuraj, U. Senthil Kumaran, T. V. Muni, Tirukoti Sudha Rani, Ramesh N. S. V. S. C. Sripada, Manzoor Hiu Siddique, Raja Raju
Solar energy consumption is a systematic study used to review the design of facilities, services, and equipment in an organization against specifications of solar panel. The solar panel energy consumption analysis is a work that should be done at the beginning of a solar energy. This way, potential changes can be highlighted before they affect the solar energy budget and schedule. The proposed model provides the IOT-based smart solar energy consumption analysis and control model by using solar photovoltaic micro grid. The proposed IOT design must meet product and process requirements. The solar panel energy should properly address important aspects of production processes. This should include risks related to product quality and safety. Finally, unacceptable risks must be minimized by design. In the solar energy consumption analysis process, the deliverables should be evaluated; customers should precheck the proposed design and identify problematic areas, if any. Solar energy consumption analysis reveals whether user requirements and features are sufficient to achieve the desired outcome. Likewise, there should be corrective actions for discrepancies found in design reviews.
太阳能消耗是一项系统研究,用于根据太阳能电池板的规范审查组织中的设施、服务和设备的设计。太阳能电池板能耗分析是一项在太阳能开发初期就应该做的工作。这样,在潜在的变化影响太阳能预算和时间表之前,可以突出显示这些变化。该模型利用太阳能光伏微电网提供了基于物联网的智能太阳能消耗分析与控制模型。提议的物联网设计必须满足产品和工艺要求。太阳能电池板能源应适当解决生产过程的重要方面。这应包括与产品质量和安全相关的风险。最后,必须通过设计将不可接受的风险降至最低。在太阳能消耗分析过程中,应评估可交付成果;客户应该预先检查提议的设计,并确定有问题的地方(如果有的话)。太阳能消耗分析揭示了用户需求和功能是否足以达到预期结果。同样,对于设计审查中发现的差异,也应采取纠正措施。
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引用次数: 2
Performance of Multilayered Nanocoated Cutting Tools in High-Speed Machining: A Review 多层纳米涂层刀具在高速加工中的性能研究进展
IF 3.2 4区 工程技术 Q3 CHEMISTRY, PHYSICAL Pub Date : 2022-10-11 DOI: 10.1155/2022/5996061
S. Ganeshkumar, S. Venkatesh, P. Paranthaman, R. Arulmurugan, J. Arunprakash, M. Manickam, S. Venkatesh, G. Rajendiran
In machining processes, cutting tools play a dominant role in producing quality products. The quality of finished goods is directly related to the cutting tool condition. Several types of research have been carried out in cutting tool condition monitoring. On the other hand, the manufacturing industries should be aware of the cutting tool selection, operating conditions, and performance of cutting tools. This article emphasizes the performance of coated cutting tools and tool materials for various machining operations. Nowadays, the nanocoating of CNC tool inserts increases the wear resistance, vibration emissions, metal removal rate, etc. These coating techniques influence the manufacturing industry to increase the productivity and quality of the finished goods and reduce the machining cost. The performance of thin film multilayered coatings such as TiN, TiAlN, AlTiN, Ti, and TiCN on plain silicon carbide tool inserts is revealed by the researchers to guide the manufacturing industry for proper tool selection and standard machining inputs for metal removal operation. The influence of coating material such as TiBN, TiN, TiAlN, and CrAlSiN in cutting tools leads to increase the life time of the cutting tools, which decreases the material sticking and cutting forces. Titanium carbo nitride is wear-resistant and corrosion-resistant. Compared to TiCN, TiAlN is harder due to the higher hardness of 32 GPa. This article concludes the material selection based on the work piece material which yields good metal removal with less cutting forces. The article concludes the cutting material selection based on the work piece for machining operations.
在机械加工过程中,刀具对生产高质量产品起着主导作用。成品的质量直接关系到刀具的状态。在刀具状态监测方面进行了多种类型的研究。另一方面,制造业应了解刀具的选择、操作条件和刀具的性能。本文着重介绍了涂层刀具和刀具材料在各种加工操作中的性能。目前,数控刀具刀具的纳米涂层提高了刀具的耐磨性、振动排放、金属去除率等。这些涂层技术影响着制造业,提高了成品的生产率和质量,降低了加工成本。研究人员揭示了薄膜多层涂层(如TiN, TiAlN, AlTiN, Ti和TiCN)在普通碳化硅刀具刀片上的性能,以指导制造业正确选择刀具和标准加工输入以进行金属去除操作。TiBN、TiN、TiAlN、CrAlSiN等涂层材料对刀具的影响,增加了刀具的使用寿命,减少了材料粘着和切削力。氮化碳钛耐磨、耐腐蚀。与TiCN相比,TiAlN硬度更高,达到32gpa。本文总结了以工件材料为基础,以较小的切削力获得良好的金属切削效果的材料选择。本文根据工件的实际情况,总结了加工过程中切削材料的选择。
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引用次数: 3
Multicluster Analysis and Design of Hybrid Wireless Sensor Networks Using Solar Energy 太阳能混合无线传感器网络的多集群分析与设计
IF 3.2 4区 工程技术 Q3 CHEMISTRY, PHYSICAL Pub Date : 2022-10-11 DOI: 10.1155/2022/1164613
T. Vino, S. S. Sivaraju, R. Krishna, T. Karthikeyan, Yogesh Kumar Sharma, K. Venkatesan, G. Manikandan, R. Selvameena, Mebratu Markos
A wireless touch network is a distributed, self-organizing network of multiple sensors and actuators in combination with multiple sensors and a radio channel. Also, the security area of such a network can be several meters to several meters. The main difference between wireless sensor networks from traditional computer and telephone networks is the lack of a fixed infrastructure owned by a specific operator or provider. Each user terminal in a touch network is capable of acting as a terminal device only. Despite the long history of sensor networks, the concept of building a sensor network is not finally imposed and expressed in some software and hardware (platform) solutions. In this paper, the design and analysis of multicluster model of the sensor nodes in wireless sensor network with the help of solar energy. This proposed model provides the required energy to transmit the information between two end nodes in different cluster. The communication between the end to end clusters was increased based on this design. The implementation of sensory networks at the current stage depends largely on the specific needs of the industrial problem. The architecture, software, and hardware implementation technology is at an intensive development stage, attracting the attention of developers looking for a technological niche of future makers.
无线触摸网络是多个传感器和执行器与多个传感器和无线电信道相结合的分布式、自组织网络。另外,这种网络的安全区域可以是几米到几米。无线传感器网络与传统计算机和电话网络的主要区别在于,无线传感器网络没有固定的基础设施,由特定的运营商或提供商拥有。触摸网络中的每个用户终端只能作为终端设备。尽管传感器网络有着悠久的历史,但构建传感器网络的概念最终并没有在一些软件和硬件(平台)解决方案中被强加和表达。本文对太阳能无线传感器网络中传感器节点的多簇模型进行了设计和分析。该模型提供了在不同集群的两个端节点之间传输信息所需的能量。基于这种设计,增加了端到端集群之间的通信。现阶段感官网络的实施在很大程度上取决于工业问题的具体需要。架构、软件和硬件实现技术正处于密集发展阶段,吸引了寻找未来创客技术利基的开发人员的关注。
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引用次数: 9
Experimental Study on Gas-Solid Heat Transfer Characteristics for the Vertical Waste Heat Recovery Using the Inverse Problem Method 利用反问题法研究垂直余热回收的气固传热特性
IF 3.2 4区 工程技术 Q3 CHEMISTRY, PHYSICAL Pub Date : 2022-10-10 DOI: 10.1155/2022/4053105
Sizong Zhang, Z. Wen, Yi-ding Xing, X. Liu, Hui Zhang, Yaxuan Xiong
To establish an accurate model to optimize the vertical cooling process of the sinter, the inverse problem method is used to calculate the gas-solid heat transfer coefficient based on the gas outlet temperature, which is fitted into the correlation. The research indicates that the increase in the gas velocity is beneficial to the enhancement of the gas-solid heat transfer. With the gas velocity u g increasing from 0.8 m·s-1 to 1.6 m·s-1, the heat transfer coefficient h v increases by about twice. But this effect will weaken with the increase in the particle size. Besides, the reduction of the particle size is conducive to improving the convective heat transfer intensity between the gas and solid. With the particle size decreasing, this enhancement effect is progressively evident. At u g of 0.8 m·s-1, the increasing extent of h v is 1142.25 W·m-3·K-1 with the particle size decreasing from 20~25 mm to 15~20 mm, while that is 3152.65 W·m-3·K-1 with the particle size decreasing from 15~20 mm to 10~15 mm. In addition, the variation of the measured value of the Nusselt number with the Reynolds number has the same trend as predicted values obtained by other works. However, there is a considerable deviation in the value. Among them, the minimum value of the mean relative error is 26.81%. It is proved that the previous empirical correlations are no longer applicable, while the predicted value of this work is in good agreement with the measured value with the mean deviation of only 7.61%. Therefore, the modified correlation can accurately predict the gas-solid heat transfer characteristics in the sinter bed, which lays a foundation for the numerical design and optimization of the new process.
为了建立精确的模型来优化烧结矿垂直冷却过程,采用反问题法计算基于出口温度的气固换热系数,并将其拟合到关联关系中。研究表明,气速的增大有利于气固换热的增强。当气速u g由0.8 m·s-1增加到1.6 m·s-1时,换热系数h v增加了约2倍。但这种效应会随着粒径的增大而减弱。此外,颗粒尺寸的减小有利于提高气固之间的对流换热强度。随着粒径的减小,这种增强效应逐渐明显。当u = 0.8 m·s-1时,当粒径从20~25 mm减小到15~20 mm时,h v增大幅度为1142.25 W·m-3·K-1;当粒径从15~20 mm减小到10~15 mm时,h v增大幅度为3152.65 W·m-3·K-1。此外,努塞尔数的实测值随雷诺数的变化趋势与其他著作的预测值相同。然而,在数值上有相当大的偏差。其中,平均相对误差最小值为26.81%。结果表明,以往的经验相关性不再适用,而本工作的预测值与实测值吻合较好,平均偏差仅为7.61%。因此,修正后的关联关系可以准确预测烧结床内的气固换热特性,为新工艺的数值设计和优化奠定了基础。
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引用次数: 1
Comprehensive Review on Modelling, Estimation, and Types of Faults in Solar Photovoltaic System 太阳能光伏系统故障的建模、估计和类型综述
IF 3.2 4区 工程技术 Q3 CHEMISTRY, PHYSICAL Pub Date : 2022-10-08 DOI: 10.1155/2022/3053317
R. Prasanna, C. Karthik, Subrata Chowdhury, B. Khan
Solar photovoltaic (SPV) system fault diagnostics is vital in advanced supervision because it can alert users to catastrophic failure or greater risks. To provide green and clean energy using solar, it is mandatory to analyse various faults associated with photovoltaic system which can result in energy deficit and system breakdown and may lead to fire hazards which are often difficult to avoid. Hence, as an endeavour to improve the efficiency level, more study beginning with modelling of SPV system with its parameter estimation and types of SPV faults is aimed in this work.
太阳能光伏(SPV)系统故障诊断在高级监管中至关重要,因为它可以提醒用户灾难性故障或更大的风险。为了使用太阳能提供绿色清洁能源,必须分析与光伏系统相关的各种故障,这些故障可能导致能源短缺和系统故障,并可能导致通常难以避免的火灾隐患。因此,为了提高效率水平,本工作旨在从SPV系统建模及其参数估计和SPV故障类型开始进行更多的研究。
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引用次数: 1
Performance Enhancement of Hybrid Energy Devices Using Cooling Patches 使用冷却片增强混合能源设备的性能
IF 3.2 4区 工程技术 Q3 CHEMISTRY, PHYSICAL Pub Date : 2022-10-06 DOI: 10.1155/2022/3604240
Jaehwan Lee, Kyoungah Cho, Yoon-Tae Park, Sungeun Park, Hee‐eun Song, Sangsig Kim
In this study, we demonstrated the enhancement of the output power of a hybrid energy device (HED) using a cooling patch that does not consume any external electric power. The HED consisted of a photovoltaic cell (PVC) and a thermoelectric generator (TEG); the cooling patch was attached to the TEG. When the PVC was exposed to solar irradiance, the cooling patch lowered the temperature of the PVC and increased the thermal gradient across the TEG, thereby increasing the output power. For an HED with a cooling patch at an irradiance of 1000 W/m2, the output power increased to 24.2 mW, as compared to the output power of 19.9 mW for an HED without any cooling patch.
在这项研究中,我们展示了使用不消耗任何外部电力的冷却片来增强混合能源装置(HED)的输出功率。HED由一个光伏电池(PVC)和一个热电发电机(TEG)组成;冷却贴片附着在TEG上。当聚氯乙烯暴露在太阳辐照下时,冷却片降低了聚氯乙烯的温度,增加了TEG上的热梯度,从而增加了输出功率。当辐照度为1000 W/m2时,有散热片的发光二极管输出功率增加到24.2 mW,而没有散热片的发光二极管输出功率为19.9 mW。
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引用次数: 0
IoT-Based Solar Energy Measurement and Monitoring Model 基于物联网的太阳能测量与监测模型
IF 3.2 4区 工程技术 Q3 CHEMISTRY, PHYSICAL Pub Date : 2022-10-04 DOI: 10.1155/2022/5767696
L. Chitra, N. Gowri, M. Maheswari, Dipesh Uike, N. Medikondu, E. Al-Ammar, A. M. Metwally, Ataul Islam, Abdi Diriba
In the early days, greenhouse energy did not pay much attention to coating inspections and new applications, spending more attention on repair solar energy projects instead. However, these attitudes have recently changed. Energy producers realize that preventing corrosion and deterioration is less expensive than solving the greenhouse problems when they occur. The proposed model also provides coating, paint control, and error analysis services within the scope of solar machinery and equipment-related services while the greenhouse equipment reached a low energy level. The greenhouse monitoring services ensure that a solar plant is economical, reliable, and of high quality, meets legal requirements, conforms to standards published by domestic and foreign organizations, and determines conditions that cause short circuits or power outages. In this context, with the help of cloud computing-based Internet of things (IOT), the industrial power stations, high-voltage substations, low-voltage networks, power stations that comply with legal regulations on safety from electricity, electrical installations for machinery, alarm systems, fire alarm systems, cathodic corrosion protection mechanisms in oil tanks and pipelines, emergency power supply installations, electrical installations in buildings, and gas alarm systems are inspected and documented.
早期,温室能源并不太关注涂层检查和新应用,而是将更多注意力放在修复太阳能项目上。然而,这些态度最近发生了变化。能源生产商意识到,防止腐蚀和恶化的成本比解决温室问题要低。当温室设备达到低能耗水平时,所提出的模型还提供太阳能机械和设备相关服务范围内的涂层、油漆控制和误差分析服务。温室监测服务确保太阳能发电厂经济、可靠、高质量,符合法律要求,符合国内外组织发布的标准,并确定导致短路或停电的条件。在这种情况下,在基于云计算的物联网(IOT)的帮助下,工业发电站、高压变电站、低压网络、符合电力安全法律法规的发电站、机械电气装置、报警系统、火灾报警系统、油罐和管道中的阴极腐蚀保护机制,检查并记录应急电源装置、建筑物内的电气装置和气体报警系统。
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引用次数: 2
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International Journal of Photoenergy
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