International Journal of Energy Studies最新文献_第4页

Performance Analysis of Dual-Evaporator Ejector Refrigeration System in Different Configurations: Experimental Investigation 不同配置双蒸发器喷射制冷系统的性能分析:实验研究

International Journal of Energy Studies Pub Date : 2023-07-27 DOI: 10.58559/ijes.1291259

Batuhan Üğüdür, M. Di̇rek, Ümit Işkan

引用次数: 0

Overall review of electricity supply distribution, shortages in Gaza strip, and the current state-of-the-art of renewable power technologies 全面审查加沙地带的电力供应分配、短缺情况以及目前最先进的可再生能源技术

International Journal of Energy Studies Pub Date : 2023-07-14 DOI: 10.58559/ijes.1317267

Sameh Youni̇s, Güven Tunç

{"title":"Overall review of electricity supply distribution, shortages in Gaza strip, and the current state-of-the-art of renewable power technologies","authors":"Sameh Youni̇s, Güven Tunç","doi":"10.58559/ijes.1317267","DOIUrl":"https://doi.org/10.58559/ijes.1317267","url":null,"abstract":"This study presents a comprehensive assessment of the electricity crisis in the Gaza Strip and its impact on the health and well-being of its population. Using a sequential exploratory mixed-methods approach, both qualitative and quantitative data were collected from 350 households and key players institutions. The study reviewed the current state of renewable power technologies applicable to the region, and developed a performance matrix to identify the most suitable technology as an intervention to provide clean and affordable electricity. The findings indicate that solar energy is the most feasible solution to address the electricity shortage in the Gaza Strip. The study also highlights the negative impact of electricity shortages on essential services, such as health, water, and sanitation services, as well as on the fragile economy. The study recommends investing in solar energy as a reliable and cost-effective solution that is easily accessible to support the needs of the Gaza Strip and Palestine in general. The study provides a valuable resource for national and international NGOs to identify the strengths, weaknesses, opportunities, and threats of the electricity sector in the Gaza Strip.","PeriodicalId":159867,"journal":{"name":"International Journal of Energy Studies","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121882434","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

Travel Option-Based Environmental Comparison Between Passenger Aircraft and High-Speed Rail 基于出行选择的客机与高铁环境比较

International Journal of Energy Studies Pub Date : 2023-07-04 DOI: 10.58559/ijes.1300629

Ugur Kilic, Ö. Çam

{"title":"Travel Option-Based Environmental Comparison Between Passenger Aircraft and High-Speed Rail","authors":"Ugur Kilic, Ö. Çam","doi":"10.58559/ijes.1300629","DOIUrl":"https://doi.org/10.58559/ijes.1300629","url":null,"abstract":"The short-haul flights have higher emission values than medium or long-haul flights when emissions per distance are considered. In this study, the potential to reduce greenhouse gas emissions by replacing short-haul flights which carried out by a narrow-body commercial aircraft from/to Konya City in Turkey with regional jets or high-speed trains (HSRs) has been investigated. The flight trajectory is selected from Konya Airport to İstanbul Sabiha Gökçen Airport, and that trajectory is a frequently performed domestic flight between Konya and İstanbul. The IMPACT platform is used for the calculation of fuel burn and gas emissions. According to the results, traveling with regional jets or high-speed trains from/to Konya City which is the most 15th polluted city in Europe, provides advantages in terms of environmental impact. Traveling with HSR which is the best traveling option in this study, provides approximately 3.3 times more green travel than the currently used narrow-body passenger aircraft between Konya and İstanbul. In addition, this mode of transportation can become more environmentally friendly by using renewable energy sources to produce its electricity needs. It is expected that this study will serve as a guide for airline and high-speed rail operators and regulators to determine the most environmentally efficient travel options based on fuel burn and emission parameters.","PeriodicalId":159867,"journal":{"name":"International Journal of Energy Studies","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114434532","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

Effect of the various tritium breeding materials on the tritium breeding ratio in ARC fusion reactor 不同氚增殖材料对ARC聚变堆氚增殖比的影响

International Journal of Energy Studies Pub Date : 2023-06-23 DOI: 10.58559/ijes.1308031

Uğur Atalay, Güven Tunç

引用次数: 0

Investigation of the Thermal Performance and Environmental Impact of a Forced Circulation Solar Water Heating System During the Heating Season 采暖季强迫循环太阳能热水系统热性能及环境影响研究

International Journal of Energy Studies Pub Date : 2023-06-21 DOI: 10.58559/ijes.1306783

G. Arslan, Seda Yüksel

{"title":"Investigation of the Thermal Performance and Environmental Impact of a Forced Circulation Solar Water Heating System During the Heating Season","authors":"G. Arslan, Seda Yüksel","doi":"10.58559/ijes.1306783","DOIUrl":"https://doi.org/10.58559/ijes.1306783","url":null,"abstract":"A thermal analysis of a forced circulation solar water heating system (SWHS) was carried out. Three different models were analyzed: SWHS without an auxiliary heater, SWHS with an auxiliary heater, and electric heater only. The study was carried out for the province of Mersin-Turkiye. Flat plate collectors with different structural properties were used in simulations, the best results were obtained with the collector with black chrome absorber coating. This system met 55% of the hot water requirement on the design day without requiring any auxiliary heater. During the season, 18.7% of hot water needs were met in January, 20.42% in February, 37.6% in March, 31.2% in November, and 20.5% in December. SWHS with an auxiliary heater, consumed 1130.3 kWh of electrical energy during the heating season, resulting in 562.7 kg of CO2 emissions. 33 % reduction in greenhouse gas (GHG) emissions is achieved with this system compared to a base system powered by electricity only. The hot water use profile is an essential factor in the design of the SWHS. Since the systems using fossil fuels can meet the needs of the users, energy storage techniques must be adapted to the SWHS to be an alternative.","PeriodicalId":159867,"journal":{"name":"International Journal of Energy Studies","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128801031","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

Numerical investigation of the effect of operating conditions on the performance parameters of PEM fuel cells 工作条件对PEM燃料电池性能参数影响的数值研究

International Journal of Energy Studies Pub Date : 2023-06-14 DOI: 10.58559/ijes.1264797

K. Bilen, Batukan Cem Tarhan, Selahattin Çelik

引用次数: 0

Comparative Assessment of the Various Split Flow Supercritical CO2 Brayton Cycles for Marine Gas Turbine Waste Heat Recovery 船用燃气轮机余热回收中不同分流超临界CO2布雷顿循环的比较评价

International Journal of Energy Studies Pub Date : 2023-06-01 DOI: 10.58559/ijes.1295781

Serpil ÇELİK TOKER

{"title":"Comparative Assessment of the Various Split Flow Supercritical CO2 Brayton Cycles for Marine Gas Turbine Waste Heat Recovery","authors":"Serpil ÇELİK TOKER","doi":"10.58559/ijes.1295781","DOIUrl":"https://doi.org/10.58559/ijes.1295781","url":null,"abstract":"Supercritical CO2 Brayton cycle (sCO2 BC) can become easily utilized in marine gas turbine waste heat recovery applications due to their high efficiency, compact size, and low-cost advantages. In this study, the performance of the three different split flow sCO2 BCs, including turbine split flow-1 (TSF-1), turbine split flow-2 (TSF-2), and turbine split-3 (TSF-3), for the recovery of marine gas turbine waste heat is compared. The Engineering Equation Solver (EES) application is used to compare the three different split flow sCO2 BCs' performances. Moreover, to investigate the influence of important thermodynamic parameters on cycle performance, a parametric analysis is carried out. The effect of variable exhaust gas temperature, turbine input pressure, and compressor inlet pressure on net power, the energy efficiency of the system, system's exergy efficiency, and exergy destruction are examined. The results suggest that the energy efficiencies of the TSF-1 sCO2 BC, the TSF-2 sCO2 BC, and the TSF-3 sCO2 BC are calculated by 28.71%, 34.5%, and 29.42%, respectively. It has been determined that the cycle's net power increases with rising exhaust gas temperature and turbine input pressure and decreases with compressor input pressure.","PeriodicalId":159867,"journal":{"name":"International Journal of Energy Studies","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134027229","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

A Proposal And Its Application On The Type-2 Fuzzy Mamdani's Method For The Selection Classification Of The Private Small Hydropower Plant Investments In The Very Early Investment Stages In Turkey 土耳其民营小型水电站早期投资选择分类的二类模糊Mamdani法建议及应用

International Journal of Energy Studies Pub Date : 2023-05-30 DOI: 10.58559/ijes.1217872

Burak Omer Saracoglu

引用次数: 0

Site selection of the Antarctic Research stations in aspect of required optimum hybrid renewable system capacity 根据所需的最佳混合可再生能源系统容量对南极科考站进行选址

International Journal of Energy Studies Pub Date : 2023-05-27 DOI: 10.58559/ijes.1275463

Gül Nihal Güğül

{"title":"Site selection of the Antarctic Research stations in aspect of required optimum hybrid renewable system capacity","authors":"Gül Nihal Güğül","doi":"10.58559/ijes.1275463","DOIUrl":"https://doi.org/10.58559/ijes.1275463","url":null,"abstract":"The population of Antarctica consists of scientific research personnel. The number of residents ranges from about 1,100 in the winter to about 4,400 in the summer and up to 1,000 additional personnel in the nearby waters. Even in summer, Antarctica's sub-zero temperature increases the energy consumption of buildings for heating purposes. At the same time, the absence of a grid system necessitates the use of off-grid fossil-based or renewable energy systems. Considering the natural environment and building conditions in the studies, the multiple evaluation of the ground process for research stations is grouped into four main criteria: scientific research, environment, logistical support and topography. In these studies, the capacity of the renewable energy system requirement was not examined. For this reason, in this study, the capacities of the optimum hybrid renewable energy systems in 16 locations selected from different regions of Antarctica were compared. In the study, typical meteorological climate data of 15 locations were obtained. The daily energy demand is obtained by calculating the daily electricity consumption of the electrical devices and heating system that can be used. \u0000Results of this study shows that according to purpose of site, many locations that meets the requirements may exist with extremely different energy demands. In site selection, first the locations should be determined, than energy demands and required systems should be compared.","PeriodicalId":159867,"journal":{"name":"International Journal of Energy Studies","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133742942","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: 1

Heat transfer enhancement of a slot-confined and submerged impinging jet utilizing lamina-shaped CoFe3O2/water nanofluid 利用层流状CoFe3O2/水纳米流体增强狭缝约束水下冲击射流的传热

International Journal of Energy Studies Pub Date : 2023-05-26 DOI: 10.58559/ijes.1263940

Recep Ekiciler

{"title":"Heat transfer enhancement of a slot-confined and submerged impinging jet utilizing lamina-shaped CoFe3O2/water nanofluid","authors":"Recep Ekiciler","doi":"10.58559/ijes.1263940","DOIUrl":"https://doi.org/10.58559/ijes.1263940","url":null,"abstract":"Designing a cooling system is crucial for the thermal management of many different types of energy applications, such as fuel cells, solar panels, electronic cooling, and many more. Higher local heat transfer coefficient is attained by impinging jets, making them a viable cooling option. This study investigates a two-dimensional numerical study into the turbulent convective heat transfer in a confined slot and submerged impinging jet by using water and a nanofluid for Reynolds numbers between 6000 and 24000. The nanofluid of lamina-shaped CoFe3O2/water has been studied, with the volume percentage of nanoparticles ranging from 2.0% to 4.0%. Using a finite volume technique based on the SIMPLE algorithm, the governing momentum, continuity, and energy equations is solved. A presentation and discussion of the influence of the nanoparticle's volume fraction and the Reynolds number on the flow and thermal properties are provided. Increasing the volume fraction of nanoparticles is shown to enhance the Nusselt number and the Darcy friction factor. The optimal condition is also shown to occur at a Reynolds number of 24000 and a nanoparticle volume percentage of 4.0%.","PeriodicalId":159867,"journal":{"name":"International Journal of Energy Studies","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114693785","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: 1