International Journal of Energy Research最新文献

{"title":"Atomically Dispersed Platinum Supported on Crumpled Graphene Supports for Highly Efficient Hydrogen Evolution Reaction","authors":"Wonyoung Lee,&nbsp;Taeyoung Jeong,&nbsp;Kiwon Kim,&nbsp;Jeeyoung Yoo,&nbsp;Joonhee Kang,&nbsp;Byeongyong Lee,&nbsp;Myeongjin Kim","doi":"10.1155/2024/8700573","DOIUrl":"https://doi.org/10.1155/2024/8700573","url":null,"abstract":"<div>\u0000 <p>Platinum (Pt) single-atom catalysts (SACs) are a promising alternative to commercial Pt/carbon (C) catalysts because of their tunable catalytic activity with maximum atomic efficiency for the hydrogen evolution reaction (HER). Herein, we report a nitrogen (N)-doped three-dimensional (3D) crumpled graphene-supported Pt SAC (NCG/Pt) that efficiently catalyzes HER under acidic media. The NCG/Pt demonstrates an overpotential of 0.11 V at a current density of 10 mA cm⁻² with a mass activity of 2852.9 A g⁻¹_Pt, highlighting its superior 3.6 times greater hydrogen (H) production capacity compared to Pt/C. Systematically controlled electrochemical characterization together with synchrotron-based X-ray absorption spectroscopy (XAS) and N₂ adsorption–desorption isotherm experiment successfully established the structure–activity relationship, and the enhanced catalytic performance was mainly attributed to the synergistic effect between the Pt-pyridinic N₄ moiety and the crumpled graphene (CG) support. Our work presents a rational approach to designing a highly effective, robust, and efficient electrocatalyst for acidic HER.</p>\u0000 </div>","PeriodicalId":14051,"journal":{"name":"International Journal of Energy Research","volume":"2024 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/8700573","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistic Impacts of Wheat Straw on Coal Bio-Methanation: Insights Into Microbial Community Dynamics Toward Nontargeted Metabolomics","authors":"Sohail Khan,&nbsp;Ze Deng,&nbsp;Irfan Ali Phulpoto,&nbsp;Anam Jalil,&nbsp;Bobo Wang,&nbsp;Zhisheng Yu","doi":"10.1155/2024/4676624","DOIUrl":"https://doi.org/10.1155/2024/4676624","url":null,"abstract":"<div>\u0000 <p>Biogenic methane (BM) production from coal is quite limited due to its complex chemical nature, which makes the responsible microbes sensitive to its denaturation. In the current investigation, wheat straw (WS) at different concentrations as a cosubstrate were used with coal to augment methane generation from coal. Results revealed that the codigestion approach significantly enhanced the cumulative methane generation in CS1 (17.25 mmol) (coal:straw, 75:25), which was 59.52%–256.47% higher than the CS2 (coal:straw, 85:15), and WS single digestion, respectively. Moreover, the lowest methane yield (0.295 mmol/g) was achieved from single coal digestion. Particularly, the highest methane content, 68.37% in the collected biogas, was observed in CS1, followed by CS2 (49.53%), WS (44.92%), and coal (3.53%). Microbial community analysis illustrates that <i>Methanobacteriaceae</i> (51.33%) and <i>Methanosarcinaceae</i> (48.66%) were the leading archaeal communities at the peak methanogenic stage in CS1. While the abundant bacteria at this stage were <i>Hungateiclostridiaceae</i> (40.18%), <i>Rhodobacteriaceae</i> (21.40%), and <i>Lentimicrobiaceae</i> (19.20%) in CS1. According to scanning electron microscopy (SEM) analysis, several microbes were seen to be attached to the coal surface in CS1 and CS2. Moreover, the nontargeted metabolomic results showed that aromatics, aliphatic, long-chain fatty acids, and alkane (C19–C36) compounds were found to be highly expressed in only coal, CS1, and CS2 reactors compared to WS. In addition, volatile fatty acids (VFAs) analysis showed that acetic acids were abundantly present in CS1 (2,190,175 ng/ml), followed by WS (1,543,492.88 ng/ml), CS2 (1,159,050 ng/ml), and coal (50,998.31 ng/ml). These results promote the significance of using WS as a cosubstrate with coal to enhance methane production, which can be used as a fuel in power plants. Further studies are required to investigate the potential cosubstrate with coal to enhance methane production and identify the specific metabolic pathways involved.</p>\u0000 </div>","PeriodicalId":14051,"journal":{"name":"International Journal of Energy Research","volume":"2024 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/4676624","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142641685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Current Status, Challenges, and Opportunities of Evaporative Cooling for Building Indoor Thermal Comfort Using Water as a Refrigerant: A Review","authors":"Tom Fred Ishugah,&nbsp;Jeremiah Kiplagat,&nbsp;June Madete,&nbsp;Jones Musango","doi":"10.1155/2024/1026136","DOIUrl":"https://doi.org/10.1155/2024/1026136","url":null,"abstract":"<div>\u0000 <p>This study presents a review of advances made in evaporative cooling technologies, emphasizing their application in indoor thermal comfort. It highlights that the rising demand for cooling has primarily been met by conventional mechanical vapor compression systems. However, these systems face two significant issues: high electrical energy requirements and the use of refrigerants like chlorofluorocarbons (CFCs) and hydrofluorocarbons (HFCs), which contribute to ozone layer depletion and global warming. The findings indicate that evaporative cooling technology is a promising alternative due to its low energy demand and potential to integrate renewable energy, therefore enhancing its environmental benefits. The study also details various evaporative cooling technologies, recent improvements in their performance, practical applications, challenges, and opportunities for providing indoor thermal comfort.</p>\u0000 </div>","PeriodicalId":14051,"journal":{"name":"International Journal of Energy Research","volume":"2024 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/1026136","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142641716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Inlet Flow Rate on the Electrolytic Performance of a Water Electrolytic Cell Under Microgravity Conditions","authors":"Hongzhe Zhang,&nbsp;Yuanhang Wu,&nbsp;Tiankun Huang,&nbsp;Ningfei Wang,&nbsp;Zhiwen Wu","doi":"10.1155/2024/2049904","DOIUrl":"https://doi.org/10.1155/2024/2049904","url":null,"abstract":"<div>\u0000 <p>The study developed a two-dimensional nonisothermal two-phase flow model and investigated the gas–liquid phase distribution and temperature variations in a proton exchange membrane (PEM) electrolytic cell under microgravity conditions at different inlet flow rates. The impact of microgravity and terrestrial conditions on water electrolytic cells was directly compared. The results indicate that the water electrolytic cell demonstrates effective operation only when the voltage exceeds 1.7 V in a microgravity environment. Furthermore, an increase in inlet flow rate is conducive to electrochemical reactions, resulting in higher average hydrogen concentration, average hydrogen flow rate, and average current density. Under microgravity conditions, the absence of gravity results in lower average hydrogen concentration, flow rate, and current density compared to terrestrial conditions. Furthermore, an increase in inlet flow rate leads to a greater disparity in the performance of the electrolytic cell between microgravity and terrestrial conditions.</p>\u0000 </div>","PeriodicalId":14051,"journal":{"name":"International Journal of Energy Research","volume":"2024 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/2049904","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142641684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Early Impacts of COVID-19 Pandemic on the Crude Oil Prices and Demand in Sub-Saharan Africa: A Review","authors":"Mwewa Chikonkolo Mwape,&nbsp;Nonsikelelo Sheron Mpofu,&nbsp;Clement Hastings Malanda,&nbsp;Isaiah K. Kimutai","doi":"10.1155/2024/5548311","DOIUrl":"https://doi.org/10.1155/2024/5548311","url":null,"abstract":"<div>\u0000 <p>In March 2020, the World Health Organization (WHO) proclaimed the novel coronavirus 2019 (COVID-19) a global pandemic with no therapy/vaccination or universally accepted therapeutic modalities. This resulted in the implementation of containment measures such as lockdowns, which hindered economic activities and, as a result, hampered global demand, consumption, and product transportation. The global crude oil supply chain was one of the most affected. As a result, this study was done to examine the effects of COVID-19 on global crude oil markets and its consequences in sub-Saharan Africa (SSA), using Kenya and Tanzania as case studies. Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA)-based content analysis approaches were utilized to analyze data from multiple sources, and the COVID-19-induced oil price crisis was compared to previous global crude oil gluts from 1970 to 2020. It has been determined that global crude oil prices dropped by 65.96% from around $69.25/barrel in January 2020 to $23.57/barrel in June 2020, with West Texas Intermediate (WTI) reaching −$36.98/barrel in March 2020 (one of the highest in recent times). As a result, petroleum prices in Kenya and Tanzania fell by 30%. This, however, did not result in long-term energy price stability in the SSA due to a lack of logistical and storage capabilities. More research on energy storage, consumption, analysis, modeling, and preparedness for COVID-19-like disasters are suggested.</p>\u0000 </div>","PeriodicalId":14051,"journal":{"name":"International Journal of Energy Research","volume":"2024 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/5548311","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142641785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Determination of Minimum Miscible Pressure and Phase Behavior of CO2–Shale Oil in Nanopores","authors":"Yuhan Wang,&nbsp;Zhengdong Lei,&nbsp;Yishan Liu,&nbsp;Zhenhua Xu,&nbsp;Zhewei Chen,&nbsp;Xiuxiu Pan,&nbsp;Pengcheng Liu","doi":"10.1155/er/5581586","DOIUrl":"https://doi.org/10.1155/er/5581586","url":null,"abstract":"<div>\u0000 <p>CO₂ injection into shale oil reservoirs has gained widespread attention as it not only enhances oil recovery but also facilitates the geological storage of CO₂. Shale oil reservoirs are characterized by numerous nanopores, and the resident fluid exhibits unique phase behavior due to nanoconfinement effects, resulting in the failure of the traditional theoretical model and microfluidic experiment in depicting the minimum miscible pressure (MMP) of CO₂–shale oil in nanopores. This study proposes a method for calculating the MMP of CO₂–shale oil in nanopores. It combines the three-phase equilibrium calculation method of gas phase–liquid phase–adsorbed phase with the multiple mixing cell (MMC) method. The method considers capillary pressure and corrects the critical properties influenced by the nano-limited domain effect. Using this approach, the phase behavior of CO₂–shale oil in nanopores and the MMP are investigated. It is found that as the pore radius decreases, the area of the two-phase region surrounded by the phase envelope of multicomponent fluids gradually shrinks. The smaller the pore radius, the more significant the shrinkage of the two-phase region. The entire phase envelope and the critical point shift to the left and down on the coordinates, and this phenomenon is more pronounced for pore radii less than 20 nm. The presence of CO₂ increases the system’s critical condensation pressure and decreases the critical condensation temperature. The MMP of the 6-component system of CO₂–shale oil for a pore radius of 5 nm in this paper is 63.7 bar at 101°C.</p>\u0000 </div>","PeriodicalId":14051,"journal":{"name":"International Journal of Energy Research","volume":"2024 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/er/5581586","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142641788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Knacks of Evolutionary Mating Heuristics for Renewable Energy Source–Based Power Systems Signal Harmonics Estimation","authors":"Khalid Mehmood Cheema,&nbsp;Khizer Mehmood,&nbsp;Naveed Ishtiaq Chaudhary,&nbsp;Zeshan Aslam Khan,&nbsp;Muhammad Asif Zahoor Raja,&nbsp;Ahmed Nadeem","doi":"10.1155/2024/8871266","DOIUrl":"https://doi.org/10.1155/2024/8871266","url":null,"abstract":"<div>\u0000 <p>Renewable energy sources–based power systems are increasing rapidly every year with higher chances of destabilization and low power quality due to harmonics, subharmonics, and interharmonics. The elimination of the root causes of these harmonics is difficult because harmonics are generated at different levels due to various electronic components. However, the accurate estimation of power signal harmonic can be done and eliminated with a counter signal. Therefore, in this paper, the evolutionary mating heuristic is implied to accurately estimate the parameters of power signal harmonics. The proposed heuristic was tested under multiple scenarios to accurately estimate the phase and amplitude parameters of power signal harmonics at various noise levels. The tuning of the evolutionary mating heuristic is carried out for encountering predator probability and crossover probability <i>E</i>_pp &lt;0.8, <i>C</i>_p &lt;0.9. The simulation analysis depicts that the best fitness achieved by the proposed heuristic for noise levels (<i>n</i>_o) 104, 78, 52, 26, and 13 dB are 2.8169e−11, 9.6969e−09, 3.7703e−06, 1.3501e−03, and 2.8624e−02, respectively, for iteration <i>I</i> = 1249. The comparative analysis shows that the proposed heuristic performance is significantly better than other heuristics.</p>\u0000 </div>","PeriodicalId":14051,"journal":{"name":"International Journal of Energy Research","volume":"2024 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/8871266","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142642164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Energy and Exergy Analyses of Supercritical Coal-Fired Power Plant With Single Reheat and Regenerative","authors":"Aaqib Hussain Khawaja,&nbsp;Nasir Uddin Shaikh,&nbsp;Laveet Kumar,&nbsp;Ahmad K. Sleiti","doi":"10.1155/2024/8850236","DOIUrl":"https://doi.org/10.1155/2024/8850236","url":null,"abstract":"<div>\u0000 <p>This paper investigates energy and exergy analyses of 660 MW capacity supercritical coal power plant with single reheat and regenerative. The fuel utilized in the plant is a combination of sub-bituminous and lignite coal. It is found that the turbine section of the system exhibits the highest energy efficiency (around 94.17%) and exergy efficiency (around 90.73%). Also, 82.07% of the total exergy destruction is found for the boiler, and the remaining 17.93% of the irreversibility is determined for the turbine, condenser, and other components. The overall cycle energy efficiency at maximum load is computed as 40.77%, while the overall cycle exergy efficiency at maximum load is found to be 39.69%. These findings provide valuable insights into the performance of the power plant and suggest the improvements needed in performance enhancement of the boiler.</p>\u0000 </div>","PeriodicalId":14051,"journal":{"name":"International Journal of Energy Research","volume":"2024 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/8850236","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142641629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Kinetic and Thermodynamic Study of Cationic Thiazine Dye Removal From Aqueous Solution by Date Stones Variety Ghars","authors":"Abdelali Gherbia,&nbsp;Djamel Sahel,&nbsp;Abdallah Bouabidi,&nbsp;Abdelmalek Chergui","doi":"10.1155/2024/4644094","DOIUrl":"https://doi.org/10.1155/2024/4644094","url":null,"abstract":"<div>\u0000 <p>Date stones represent an unused resource that is often incinerated or disposed of directly as waste. Therefore, great attention has been paid to transforming it into useful products. This study was conducted to evaluate the ability of activated carbon prepared from the stones of one of the date varieties, called “Ghars,” as an agricultural waste to remove a basic dye, methylene blue (MB), from aqueous solutions. The surface characteristics of prepared activated carbon Ghars stones (ACGS) were characterized using scanning electron microscope (SEM) and Fourier transform infrared (FTIR) spectroscopy. Physical and chemical factors affecting MB adsorption, such as contact time, the mass of adsorbent, potential of hydrogen (pH) value, and initial concentration of the solution, were studied in a batch system. Isotherm equilibrium data are well described by the Freundlich model (<i>R</i>² = 0.98), and the experimental adsorption capacity was found to be (<i>q</i>_<i>e</i>.exp = 130.3 mg/g) at 298 K. The kinetic study indicates that the adsorption process of MB follows the pseudo-second-order (PSO) model. <i>ΔH</i>° (19.94 J/mol) and Δ<i>G</i>° (−1.101, −1.127, −1.430, and −1.546 kJ/mol) values revealed that the adsorption of MB on ACGS was endothermic nature, feasible, and spontaneous. The positive value of ∆<i>S°</i> (15.67 kJ/mol) confirmed the increased in the randomness at the solid-solution interface during the adsorption process of MB on ACGS. MB adsorption/desorption experiments demonstrated the reusability of ACGS for five consecutive cycles. The results showed that ACGS developed from agricultural waste could be successfully used to remove cationic organic pollutants from wastewater.</p>\u0000 </div>","PeriodicalId":14051,"journal":{"name":"International Journal of Energy Research","volume":"2024 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/4644094","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142641628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Novel Thermoelectric Generation Array Reconfiguration to Reduce Mismatch Power Loss Under Nonuniform Temperature Distribution","authors":"Mingfeng Tang,&nbsp;Jun Wang,&nbsp;Yangqi Ou,&nbsp;Ziqiao Tang","doi":"10.1155/2024/7820395","DOIUrl":"https://doi.org/10.1155/2024/7820395","url":null,"abstract":"<div>\u0000 <p>In practice, industrial exhaust emissions as well as emissions from automobiles, ships, biomass combustion, etc., can be potential application areas for thermoelectric generation (TEG). However, the structural design of heat exchange equipment is usually limited by the internal flow field, resulting in uneven temperature distribution on the heat exchange equipment’s surface. The resulting mismatch power loss is a major challenge for thermoelectric power generation. In this study, based on the characteristics of the surface temperature distribution of heat exchange equipment in the context of gas emissions, a static reconfiguration scheme is proposed for reconfiguring honeycomb (HC) arrays using the symmetric interval crossing (SIC) method. Based on a fixed interconnect array configuration, the solution requires only a change in the location of the modules and no change in the electrical connections, thus reducing mismatch losses while lowering manufacturing costs. Test experiments are conducted for 6 × 6 TEG arrays, mismatch losses are evaluated for four nonuniform temperature distribution cases, and the performance of seven different TEG array configurations is compared. The findings demonstrate that, in nonuniform temperature distribution scenarios, the SIC method can effectively reduce mismatch losses and has a greater output power than alternative array configurations.</p>\u0000 </div>","PeriodicalId":14051,"journal":{"name":"International Journal of Energy Research","volume":"2024 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/7820395","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142641659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}