International Journal on Energy Conversion最新文献

The Experimental Study of Photovoltaic Performance Improvement Using Multiple Reflectors 利用多反射镜提高光伏性能的实验研究

International Journal on Energy Conversion Pub Date : 2023-05-31 DOI: 10.15866/irecon.v11i3.23976

Erfan Dimas Ardiyanto, Zainal Arifin, Rendy Adhi Rachmanto

{"title":"The Experimental Study of Photovoltaic Performance Improvement Using Multiple Reflectors","authors":"Erfan Dimas Ardiyanto, Zainal Arifin, Rendy Adhi Rachmanto","doi":"10.15866/irecon.v11i3.23976","DOIUrl":"https://doi.org/10.15866/irecon.v11i3.23976","url":null,"abstract":"The energy used in the world today still comes from fossil fuels. Limited fossil energy causes prices to continue to rise. One renewable energy source that is easily found is solar energy. There are various methods for harnessing solar energy. The method that is often used is to use PV panels. PV panels have the ability to create electricity by using direct sunlight. One case in the use of PV panels is low efficiency and output power. This article discusses the use of reflectors on PV panels to increase the intensity of solar radiation and the output power of PV panels. This study aims to optimize the use of reflectors made from glass mirrors and aluminum sheets on PV panels with variations in reflector angles. Various parameters are measured, such as solar radiation intensity, output power, and electrical efficiency. The use of reflectors on PV panels can increase the intensity of solar radiation received, output power and efficiency of electricity generated. Variations in reflector angles and reflective materials used affect the performance of PV panels. In this study, aluminum reflectors have provided a more significant improvement compared to glass mirror reflectors. However, at certain times, PV panels with reflectors can reduce the performance of PV panels because the reflector covers part of the panel area.","PeriodicalId":37583,"journal":{"name":"International Journal on Energy Conversion","volume":"294 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135439361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of Convergence Behavior and Derivation of Divergence Indicator in Continuation Power Flow Iterations 连续潮流迭代中的收敛行为分析及发散指标的推导

International Journal on Energy Conversion Pub Date : 2023-05-31 DOI: 10.15866/irecon.v11i3.23591

Agron Bislimi

{"title":"Analysis of Convergence Behavior and Derivation of Divergence Indicator in Continuation Power Flow Iterations","authors":"Agron Bislimi","doi":"10.15866/irecon.v11i3.23591","DOIUrl":"https://doi.org/10.15866/irecon.v11i3.23591","url":null,"abstract":"This research aims to achieve the following objectives: an analysis of the convergence behavior of the correction step within the iterations of the Continuation Power Flow (CPF), and the development of a divergence indicator. Specifically, the research delves into examining the numerical stability and convergence properties of the Continuation Power Flow Method (CPFM). Subsequently, a defined convergence area for the correction iterations is established. This definition enables an early estimation at the onset of the correction step regarding the likelihood of convergence. Additionally, it helps determine whether actions to enhance convergence (such as reducing the predictor step size) are necessary. The practical applications of the convergence area are exemplified using a few practical examples. The introduced convergence area concept proves effective in identifying potential divergence of the correction process, particularly during the critical phase of CPF analysis - even as early as the first iteration. Hence, if the corrector demonstrates a tendency to diverge, corrective actions can be implemented in advance before expending unnecessary computational time on iterations that diverge. Critical phase of CPF analysis involves the lower PV curve processing at the Lambda continuation parameter. Here, the concept of \"area of convergence\" serves as a valuable tool for stabilizing the corrector.","PeriodicalId":37583,"journal":{"name":"International Journal on Energy Conversion","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135439211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Energy Analysis of a H2O-LiBr Absorption Cooling System Under the Climatic Conditions of Senegal 塞内加尔气候条件下H2O-LiBr吸收式冷却系统的能量分析

International Journal on Energy Conversion Pub Date : 2023-05-31 DOI: 10.15866/irecon.v11i3.23167

Serigne Thiao, Mamadou Sow, Awa Mar, Diouma Kobor, Issakha Youm

{"title":"Energy Analysis of a H2O-LiBr Absorption Cooling System Under the Climatic Conditions of Senegal","authors":"Serigne Thiao, Mamadou Sow, Awa Mar, Diouma Kobor, Issakha Youm","doi":"10.15866/irecon.v11i3.23167","DOIUrl":"https://doi.org/10.15866/irecon.v11i3.23167","url":null,"abstract":"This work is an energy analysis of a simple effect absorption cooling system operating with H2O-LiBr pair in the climatic conditions of Senegal. To achieve this, the energy balance at the level of the various components of the system will be established in order to show the behavior of each component of the system according to the climatic conditions of the study site. To find out if this cooling absorption system is suitable for the Senegalese climate, the effects of the temperature of the absorber and the generator have respectively been seen on the mass flow rates and on the circulation factor. The behavior of the cooling absorption system in the weather conditions of Senegal was predicted using a mathematical model developed with Engineering Equation Solver (EES) software. The simulation results of this present work were compared with those found in the literature. The thermodynamic parameters such as temperature, entropy, enthalpy, mass fraction found at the level of the various components of the system are in agreement with those found by other authors. Similarly, the results obtained show that for better performance of the system, the operating parameters must be optimized taking into account the crystallization limits of lithium bromide. Similarly, modifications must be made to the design of some devices such as the absorber and the generator to better adapt them to local climatic conditions. Beyond the design and modification of the components of the system, it is also necessary to play on the operating conditions for a better functioning of the absorption cooling system in Senegal.","PeriodicalId":37583,"journal":{"name":"International Journal on Energy Conversion","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135439359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of the Economic, Environmental and Energy Performance of Generation Technologies for Use as Backup Sources 作为备用电源的发电技术的经济、环境和能源性能评价

International Journal on Energy Conversion Pub Date : 2023-05-31 DOI: 10.15866/irecon.v11i3.23657

Cesar Peralta, Cristian Perilla, Johan Jose Castañeda, Alvaro Zambrano, Javier Rosero Garcia

引用次数: 0

Impact of the Solar Ventilation System on the Fuel Savings and CO2 Reductions for Gasoline Vehicle Engine Parked Under the Sun 太阳能通风系统对停在阳光下的汽油车发动机节约燃料和减少二氧化碳的影响

International Journal on Energy Conversion Pub Date : 2023-03-31 DOI: 10.15866/irecon.v11i2.23410

H. A. Al-Shakhanbeh, M. Z. Abdullah, Hani Al-Rawashdeh, J. Sakdapipanich

引用次数: 0

Inter-Turn Fault Resilient Controls of a PMSM-Based Tidal Stream Turbine 基于永磁同步电机的潮流涡轮机匝间故障恢复控制

International Journal on Energy Conversion Pub Date : 2023-03-31 DOI: 10.15866/irecon.v11i2.23541

S. Toumi, Y. Amirat, M. Benbouzid, E. Elbouchikhi, Zhibin Zhou

引用次数: 0

Instrumental Research on the Voltage Harmonic Distortion Coefficient in the Modern 110 kV Urban Electric Network 现代110千伏城市电网电压谐波失真系数的仪器研究

International Journal on Energy Conversion Pub Date : 2023-03-31 DOI: 10.15866/irecon.v11i2.22979

Assemgul Zhantlessova, S. Zhumazhanov, T. Akimzhanov, B. Issabekova, Zhanat B. Issabekov, A. Mekhtiyev, Y. Neshina

引用次数: 0

Distribution System Reconfiguration and Capacitor Placement for Loss Reduction by Ant Colony Algorithm 基于蚁群算法的配电系统重构与电容布置

International Journal on Energy Conversion Pub Date : 2023-03-31 DOI: 10.15866/irecon.v11i2.23877

M. J. Kasaei, H. Norouzi

引用次数: 0

Effect of Cylinder Injection Signal Override on Power Losses and Fuel Economy in Internal Combustion Engines 汽缸喷射信号覆盖对内燃机功率损失和燃油经济性的影响

International Journal on Energy Conversion Pub Date : 2023-01-31 DOI: 10.15866/irecon.v11i1.22747

Carlos Pardo García, J. Pabón, Marlen Fonseca Vigoya

引用次数: 0

Improving the Performance of Steam Power Plant by Applying Energy and Exergy Analysis at Altering Operating Parameters 应用能量和火用分析提高蒸汽发电厂运行性能

International Journal on Energy Conversion Pub Date : 2023-01-31 DOI: 10.15866/irecon.v11i1.23452

Hayder Rafeeq Shaheed, R. Radhi, H. N. Mohammed

引用次数: 0