International Journal of Photoenergy最新文献_第10页

Optimization of Oil Yield from the Macro Algae Spirogyra by Solvent Extraction Process Using RSM and ANN 应用RSM和ANN优化溶剂萃取法从大型海藻Spirogyra中提取油脂

IF 3.2 4区工程技术

International Journal of Photoenergy Pub Date : 2022-09-19 DOI: 10.1155/2022/3690635

S. Aravind, Debabrata Barik, Nagaraj Ashok

{"title":"Optimization of Oil Yield from the Macro Algae Spirogyra by Solvent Extraction Process Using RSM and ANN","authors":"S. Aravind, Debabrata Barik, Nagaraj Ashok","doi":"10.1155/2022/3690635","DOIUrl":"https://doi.org/10.1155/2022/3690635","url":null,"abstract":"The present work was done to optimize the process parameters of the oil extraction from the algae species spirogyra by using n-hexane as the solvent using the Soxhlet apparatus. The response surface methodology (RSM) and artificial neural network (ANN) were employed to optimize the particle size of the algae powder, dryness level of the algae powder, solid to solvent ratio, reaction time, and extraction temperature of the oil extraction process. Also, the physiochemical properties of the extracted oil were investigated. The comparative evaluation was done between the RSM and ANN models to select the more precise and accurate model. The coefficient of determination, \u0000 \u0000 \u0000 \u0000 R\u0000 \u0000 \u0000 2\u0000 \u0000 \u0000 \u0000 of 98.92%, and the mean absolute percentage deviation (MAPD) of 0.492% for ANN revealed that the current model created with a network topology of 3 : 11 : 1 with tansig (hyperbolic tangent sigmoid) transfer function in the input layer and purelin (pure linear) transfer function in the output layer trained with trainlm (Levenberg–Marquardt) algorithm found to provide the optimal solution with better accuracy in prediction of the output. The physicochemical properties investigated, such as heating value, flashpoint, density, viscosity, iodine number, acid value, saponification value, and cetane index, showed that the extracted oil from the algae spirogyra species can be used as an alternative fuel.","PeriodicalId":14195,"journal":{"name":"International Journal of Photoenergy","volume":" ","pages":""},"PeriodicalIF":3.2,"publicationDate":"2022-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47541177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Demonstrating and Investigating the Mechanical Strength of Solar Cells 展示和研究太阳能电池的机械强度

IF 3.2 4区工程技术

International Journal of Photoenergy Pub Date : 2022-09-19 DOI: 10.1155/2022/4713869

V. Raj, R. K. Priya, K. V. Bindu, N. Prabhu, S. Madhavarao, G. Ramkumar, A. Seikh, M. H. Siddique, Endalkachew Mergia Anbese

引用次数: 3

Artificial Intelligence-Based Deep Learning Model for the Performance Enhancement of Photovoltaic Panels in Solar Energy Systems 基于人工智能的太阳能系统光伏板性能增强深度学习模型

IF 3.2 4区工程技术

International Journal of Photoenergy Pub Date : 2022-09-17 DOI: 10.1155/2022/3437364

R. Meena, Ashutosh Kumar Singh, Shilpa Urhekar, RohitBhakar, N. K. Garg, Mohammad Israr, D. Kothari, C. Chiranjeevi, Prasath Srinivasan

引用次数: 0

Numerical Study on the Optimization Design of Photovoltaic/Thermal (PV/T) Collector with Internal Corrugated Channels 内波纹通道光伏/热（PV/T）集热器优化设计的数值研究

IF 3.2 4区工程技术

International Journal of Photoenergy Pub Date : 2022-09-17 DOI: 10.1155/2022/8632826

Xiangrui Kong, Yuhan Zhang, Jinshun Wu, S. Pan

{"title":"Numerical Study on the Optimization Design of Photovoltaic/Thermal (PV/T) Collector with Internal Corrugated Channels","authors":"Xiangrui Kong, Yuhan Zhang, Jinshun Wu, S. Pan","doi":"10.1155/2022/8632826","DOIUrl":"https://doi.org/10.1155/2022/8632826","url":null,"abstract":"This study presents a theoretical study on the super thin and conductive thermal absorber with built-in corrugated channels on the basis of previous field experiments. The flow and heat transfer characteristics of the corrugated channels are simulated to identify the factors affecting photovoltaic/thermal (PV/T) system efficiency. The influences of the structural parameters such as the corrugation number, the corrugation area, and the flow channel width on the water outlet temperature and heat collection are discussed in order to support the structural optimization design of the hybrid PV/T system. The simulation results were validated to be in good agreement with experimental results. The results indicate that increasing inlet water velocity leads to a decrease in the outlet temperature. It was found that the corrugation area and the flow channel width have impacts on the outlet temperature of the hybrid PV/T collector panel. When the flow channel width of the absorber plate is reduced from 4 mm to 3 mm, the outlet temperature attained is between 298 and 302 K, and the heat collection is in the range of 16.2–51.4 MJ/h. This led to an increase in the amount of heat collected by 18.6%.","PeriodicalId":14195,"journal":{"name":"International Journal of Photoenergy","volume":" ","pages":""},"PeriodicalIF":3.2,"publicationDate":"2022-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44671367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Insights into the Enhancement Mechanisms of Molten Salt Nanofluids 熔盐纳米流体增强机理的研究

IF 3.2 4区工程技术

International Journal of Photoenergy Pub Date : 2022-09-13 DOI: 10.1155/2022/4912922

Xiong Yaxuan, W. Huixiang, Wang Zhenyu, W. Yuting, X. Qian, Wang Gang, Li Chuan, Ding Yulong, Ma Chongfang

{"title":"Insights into the Enhancement Mechanisms of Molten Salt Nanofluids","authors":"Xiong Yaxuan, W. Huixiang, Wang Zhenyu, W. Yuting, X. Qian, Wang Gang, Li Chuan, Ding Yulong, Ma Chongfang","doi":"10.1155/2022/4912922","DOIUrl":"https://doi.org/10.1155/2022/4912922","url":null,"abstract":"The addition of nanomaterials to molten salts can significantly improve their thermal performance. To explore the enhancement mechanisms, this work prepared carbonate salt nanofluids with binary carbonate as base salt and 20 nm SiO2 and 20 nm MgO nanoparticles as additives by the commonly used aqueous solution method. Then, the key performance and micromorphology of the carbonate salt nanofluids are characterized by differential scanning calorimetry, thermal gravimetric analysis, laser flash analysis, and micromorphology analysis. Results showed that the 20 nm SiO2 nanomaterials instead of the 20 nm MgO nanomaterials exerted higher effects on latent heat while the 20 nm MgO nanomaterials instead of the 20 nm SiO2 nanomaterials exerted higher effects on the sensible heat, thermal conductivity, and high-temperature stability of carbonated salt. In addition, different nanostructures were observed in SiO2-based and MgO-based molten salt nanofluids, respectively. Innovatively, formation mechanisms of molten salt nanofluids were proposed based on cloud nuclei to explain the different enhancements in this work.","PeriodicalId":14195,"journal":{"name":"International Journal of Photoenergy","volume":" ","pages":""},"PeriodicalIF":3.2,"publicationDate":"2022-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49011301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Current-Sensorless Control Strategy for the MPPT of a PV Cell: An Energy-Based Approach 光伏电池MPPT无电流传感器控制策略:基于能量的方法

IF 3.2 4区工程技术

International Journal of Photoenergy Pub Date : 2022-09-10 DOI: 10.1155/2022/1747533

Hayden Phillips-Brenes, Roberto Pereira-Arroyo, R. Rímolo-Donadío, M. Muñoz-Arias

{"title":"Current-Sensorless Control Strategy for the MPPT of a PV Cell: An Energy-Based Approach","authors":"Hayden Phillips-Brenes, Roberto Pereira-Arroyo, R. Rímolo-Donadío, M. Muñoz-Arias","doi":"10.1155/2022/1747533","DOIUrl":"https://doi.org/10.1155/2022/1747533","url":null,"abstract":"A novel energy-based modelling and control strategy is developed and implemented to solve the maximum power point tracking problem when a photovoltaic cell array is connected to consumption loads. A mathematical model that contains key characteristic parameters of an energy converter stage connected to a photovoltaic cell array is proposed and recast using the port-Hamiltonian framework. The system consists of input-output power port pairs and storage and dissipating elements. Then, a current-sensorless control loop for a maximum power point tracking is designed, acting over the energy converter stage and following an interconnection and damping assignment passivity-based strategy. The performance of the proposed strategy is compared to a (classical) sliding mode control law. Our energy-based strategy is implemented in a hardware platform with a sampling rate of 122 Hz, resulting in lower dynamic power consumption compared to other maximum power point tracking control strategies. Numerical simulations and experimental results validate the performance of the proposed energy-based modelling and the novel control law approach.","PeriodicalId":14195,"journal":{"name":"International Journal of Photoenergy","volume":" ","pages":""},"PeriodicalIF":3.2,"publicationDate":"2022-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42237685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal Performance of a Dimpled Tube Parabolic Trough Solar Collector (PTSC) with SiO2 Nanofluid 含SiO2纳米流体的波纹管抛物槽太阳能集热器(PTSC)的热性能

IF 3.2 4区工程技术

International Journal of Photoenergy Pub Date : 2022-08-28 DOI: 10.1155/2022/8595591

M. Arun, Debabrata Barik, K. P. Sridhar, M. Dennison

{"title":"Thermal Performance of a Dimpled Tube Parabolic Trough Solar Collector (PTSC) with SiO2 Nanofluid","authors":"M. Arun, Debabrata Barik, K. P. Sridhar, M. Dennison","doi":"10.1155/2022/8595591","DOIUrl":"https://doi.org/10.1155/2022/8595591","url":null,"abstract":"In this research work, dimple texture tubes and silicon dioxide (SiO2) nanofluid were used to analyze the performance parameters of a solar water heater. For this purpose, SiO2 was mixed with deionized (DI) water using an ultrasonic dispersion device to prepare the nanofluids (SiO2/DI-H2O). The size of the nanoparticle was in the range of 10-15 nm. Different volume concentrations of the nanoparticles in the range of 0.1% to 0.5%, in steps of 0.1%, were chosen to prepare the nanofluids to carry out the experiments. Apart from this, computational fluid dynamics (CFD) tool was used to numerically analyze the parameters affecting the performance of the solar water heater, as well as the fluid flow pattern in the dimple texture tube. During the experiment, the mass flow rate of the base fluid (water) varied in the range of 0.5 kg/min to 3.0 kg/min in steps of 0.5 kg/min. The added advantage of the dimple texture tube design led to an increase in turbulence in the flow pattern, resulting 34.2% increase in the convective heat transfer efficiency compared with the plain tube. Among all experimental modules, SiO2/DI-H2O with a mass flow rate of 2.5 kg/min and 0.3% volume concentration gives overall optimized results in absolute energy absorption, gradient temperature, and efficiency of the solar water heater. The efficiency metrics of the experimental results were compared with the simulation results, and it was in the acceptable range with an overall deviation of ±7.42%.","PeriodicalId":14195,"journal":{"name":"International Journal of Photoenergy","volume":" ","pages":""},"PeriodicalIF":3.2,"publicationDate":"2022-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43459595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Spectral Factor of Colored Solar Cells: A Case Study on the Main Urban Areas in Romania 彩色太阳能电池的光谱因子:罗马尼亚主要城市地区的案例研究

IF 3.2 4区工程技术

International Journal of Photoenergy Pub Date : 2022-08-27 DOI: 10.1155/2022/8494818

Sergiu Hațegan, M. Paulescu

{"title":"Spectral Factor of Colored Solar Cells: A Case Study on the Main Urban Areas in Romania","authors":"Sergiu Hațegan, M. Paulescu","doi":"10.1155/2022/8494818","DOIUrl":"https://doi.org/10.1155/2022/8494818","url":null,"abstract":"PV modules for Building-Integrated Photovoltaic (BIPV) applications are made of different colors aimed at raising the visual aesthetic of the building. But a colored coating applied to the surface of a basic PV module is inherently associated to a decrease in conversion efficiency. From a different perspective, the efficiency of a PV module is evaluated under the industry standard test conditions (STC). Due to spectral mismatch, the efficiency of a PV module operating in outdoor conditions may substantially differ from the standard value evaluated at STC. In this study, the influence of spectral solar irradiance distribution on the colored PV module efficiency is evaluated in terms of spectral factor (SF). SF quantifies the relative power gain or loss caused by the spectral difference from STC. The theory is illustrated with a case study on the main four urban areas in Romania. The actual solar radiation spectrum is estimated with the simple Leckner spectral solar irradiance model, based on atmospheric parameters retrieved from the Aerosol Robotic Network (AERONET). The results emphasize that the aesthetic of BIPV comes at a high energy cost: depending on the color, a coating applied on the surface of a crystalline silicon PV module may reduce its conversion efficiency even by half.","PeriodicalId":14195,"journal":{"name":"International Journal of Photoenergy","volume":" ","pages":""},"PeriodicalIF":3.2,"publicationDate":"2022-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49272056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Optimal Algorithm for Renewable Energy Generation Based on Neural Network 基于神经网络的可再生能源发电优化算法

IF 3.2 4区工程技术

International Journal of Photoenergy Pub Date : 2022-08-27 DOI: 10.1155/2022/8072269

Weihua Zhao, Imran Khan, Shelily F. Akhtar, Mujahed Al-Dhaifallah

{"title":"An Optimal Algorithm for Renewable Energy Generation Based on Neural Network","authors":"Weihua Zhao, Imran Khan, Shelily F. Akhtar, Mujahed Al-Dhaifallah","doi":"10.1155/2022/8072269","DOIUrl":"https://doi.org/10.1155/2022/8072269","url":null,"abstract":"Solar energy is a costless and readily available form of energy that has shown to be one of the cleanest and most plentiful renewable energy sources. Various large-scale solar photovoltaic (PV) facilities are being utilized to minimize pollution and carbon emissions generated by fossil energy in many nations across the world. The power sequence of PV is influenced by a variety of diverse variables, and it is very unpredictable and volatile. Unlike the distributed PVs, the centralized PVs have the same intensity and location. The obstruction of clouds causes minor variations in the output power of the PV, making the power forecasting more difficult. To solve the aforementioned difficulties, this article provides a new neural network-based technique for PV power optimization and forecasting. The first stage is to create a cloud trajectory tracking system based on cloud photos taken from the ground. Second, a cloud trajectory tracking-based irradiance coefficient prediction model was built. Then, to increase forecast accuracy, build an error correcting model. For verification, data from a centralized solar power station was used. The results show that the proposed algorithm has technological applications and may greatly improve prediction accuracy.","PeriodicalId":14195,"journal":{"name":"International Journal of Photoenergy","volume":" ","pages":""},"PeriodicalIF":3.2,"publicationDate":"2022-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47690549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Smart Integrated Decentralization Strategies of Solar Power System in Buildings 建筑太阳能系统的智能集成分散策略

IF 3.2 4区工程技术

International Journal of Photoenergy Pub Date : 2022-08-25 DOI: 10.1155/2022/9311686

Syed Muhammad Kashif Shah, Tanzeel Ur Rasheed, H. M. Ali

{"title":"Smart Integrated Decentralization Strategies of Solar Power System in Buildings","authors":"Syed Muhammad Kashif Shah, Tanzeel Ur Rasheed, H. M. Ali","doi":"10.1155/2022/9311686","DOIUrl":"https://doi.org/10.1155/2022/9311686","url":null,"abstract":"This study signifies the need for a smart integrated decentralized solar energy system in Pakistan. Since the outlook of energy is highly dominated by its power sector, policy measures must be adopted to ensure its penetration in the system of any country. After the industrial, the housing sector is the major energy-consuming sector. The goal of this study is to assess energy generation through a smart integrated decentralized solar energy system in the power hub of a commercial area in Taxila, Pakistan. Model development involves a hypothetical model built on LabVIEW which allows the user interface a way to intermingle with the source code. It permits the user to the transformation of the values sent to the source code and sees the information that the source code calculates. The proposed system is a collaborative sharing integrated decentralized solar system that credits sunlight-based energy framework proprietors for the power they add to different buildings due to the collaborative sharing mechanism at Rs.10 per kWh. This low-cost electricity is available at your doorstep that you can share according to the collaborative sharing basis that will not range any certain variable. Results from the literature describe that 30% of the cost associated with the commercial price of electricity amounts to distribution cost. This system of the utilization of energy would be applied at a local level to achieve the maximum power generation from solar panels through blockchain use of solar systems, especially in regions that have no entrance to traditional power with little odds of getting associated in the next 5-10 years.","PeriodicalId":14195,"journal":{"name":"International Journal of Photoenergy","volume":" ","pages":""},"PeriodicalIF":3.2,"publicationDate":"2022-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42121794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8