Energy Storage and Saving最新文献

{"title":"Experimental investigation and optimization of the gasification parameters of macadamia nutshells in a batch-fed bubbling fluidized bed gasifier with air preheating","authors":"Fredrick Irungu Njuguna ,&nbsp;Hiram M. Ndiritu ,&nbsp;Benson B. Gathitu ,&nbsp;Meshack Hawi ,&nbsp;Jotham Muthoka Munyalo","doi":"10.1016/j.enss.2023.07.001","DOIUrl":"10.1016/j.enss.2023.07.001","url":null,"abstract":"<div><p>Gasification of biomass waste has a significant potential to reduce environmental impact and promote sustainability by producing syngas, which is considered as renewable energy. This work investigated the gasification of macadamia nutshells in air-preheated, batch-fed fluidized bed gasifier. The study conducted a parametric analysis to assess the effect of equivalence ratio (ER) and air temperature on the gasifier temperature profile and its performance based on gas composition, higher heating value (HHV), and gas yield. The research was conducted within the range of 0.15–0.35 for the equivalence ratio and 25–825 °C for the air temperature. Multi-objective numerical optimization was conducted using response surface methodology (RSM). From the parametric study, a distinct temperature profile was observed along the gasifier height, with the peak temperature near the top of the fluidized bed section and the lowest temperature at the top of the gasifier. Air preheating mostly favored gasification temperature at the lower part of the gasifier and showed rare significance at the top. No improvement in gasifier performance was observed beyond an air temperature of 620 °C, which was identified as the ideal air-preheating temperature. Analysis of variance (ANOVA) revealed that the equivalence ratio was the most influential parameter in the production of combustible gasses, syngas HHV and gas yield. Air preheating did not have a significant effect on methane production and gas yield. The most optimal values for ER and air temperature were obtained as 0.195 °C and 620 °C, respectively, producing optimal values of 9.54, 14.65%, 2.03, 4.02 MJ· Nm⁻³, and 1.82 Nm³· kg⁻¹ for hydrogen, carbon monoxide, methane, HHV, and gas yield, respectively.</p></div>","PeriodicalId":100472,"journal":{"name":"Energy Storage and Saving","volume":"2 4","pages":"Pages 559-570"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772683523000390/pdfft?md5=a942054c797ea317674c1da029131008&pid=1-s2.0-S2772683523000390-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74883962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ReaxFF-MD simulation investigation of the degradation pathway of phenol for hydrogen production by supercritical water gasification","authors":"Deming Zhang ,&nbsp;Shaoqi Wang ,&nbsp;Yu Feng ,&nbsp;Zixuan Wang ,&nbsp;Hui Jin","doi":"10.1016/j.enss.2023.05.001","DOIUrl":"10.1016/j.enss.2023.05.001","url":null,"abstract":"<div><p>Wastewater from the thermochemical conversion of coal and biomass contains a significant amount of phenolic structures compounds. The degradation of these phenolic compounds to hydrogen-rich gasses can prevent environmental pollution and save energy. Supercritical water (SCW) gasification of phenol is experimentally studied and a reactive force field molecular dynamics (ReaxFF-MD) simulation is conducted to investigate the catalytic mechanism of Ni/Al₂O₃ in the phenol degradation. The experimental results indicate that Ni/Al₂O₃ facilitates the conversion of phenol to 1-ethoxy butane via ring opening, which is a crucial step for complete gasification. The ReaxFF-MD simulation demonstrated that Ni facilitates the formation of H₃O free radicals and Ni-phenol intermediates. H₃O free radicals can be decomposed into H₂ and OH free radicals. Both the generated OH free radical and Ni-phenol intermediate promote the ring-opening reaction of phenol. Ni promotes the direct decomposition of phenol into C₁, C₂, and C₃ fragments, which is beneficial for further complete gasification.</p></div>","PeriodicalId":100472,"journal":{"name":"Energy Storage and Saving","volume":"2 4","pages":"Pages 578-585"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772683523000262/pdfft?md5=e773f07f815bbe87bad85e3ec92dafba&pid=1-s2.0-S2772683523000262-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77708574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thermal performance of a metal hydride reactor for hydrogen storage with cooling/heating by natural convection","authors":"Konstantin Borisovich Minko,&nbsp;Maksim Nashchekin","doi":"10.1016/j.enss.2023.08.006","DOIUrl":"10.1016/j.enss.2023.08.006","url":null,"abstract":"<div><p>Metal hydride (MH) systems can be used for storage in stationary facilities of hydrogen with a high volume density at temperatures and pressures close to ambient ones. Recently, the possibility of using passive heating/cooling systems or regenerative heat exchangers has been studied to improve the energy efficiency of MH systems for hydrogen storage without the need for forced circulation of a heating/cooling fluid. Natural convection of air may be used to passively remove/add heat as required for proper operation of a MH reactor. Under these conditions, the MH reactor can operate at a constant ambient air temperature and be driven by a difference in pressure between the source and the consumer of hydrogen. Since operation of MH systems with natural convective heating/cooling has not been systematically investigated as yet, a tubular MH reactor based on this principle is examined in this paper. Two-thirds of the internal volume of ø25.4 × 1 mm tube is occupied by a composition of LaNi₅ and aluminium foam (one linear metre contains 1.1 kg of LaNi₅ with a hydrogen capacity of 153 NL H₂). Annular fins are used to increase heat transfer to air. Detailed and simplified mathematical models of the systems of this class are proposed and validated. It is shown that acceptable hydrogen charging/discharging rates in such systems are achieved with proper selection of fining characteristics. Charging from a hydrogen source at a pressure of 10 atm and an ambient air temperature of 10 to 30 °C takes 15 min. A reactor with a length of 1 m can desorb almost all stored hydrogen at a minimum outlet pressure of 0.45 bar to feed 30–300 W fuel cells.</p></div>","PeriodicalId":100472,"journal":{"name":"Energy Storage and Saving","volume":"2 4","pages":"Pages 597-607"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772683523000444/pdfft?md5=64c12d82adf126d1b9de703245dcfd0a&pid=1-s2.0-S2772683523000444-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88494877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental investigation of inflow-outflow asymmetry in induced-charge electro-osmosis","authors":"Lingqi Zhao ,&nbsp;Tianwei Lai ,&nbsp;Yingke Gao ,&nbsp;Shaohang Yan ,&nbsp;Mingzhe Liu ,&nbsp;Yu Hou","doi":"10.1016/j.enss.2023.10.002","DOIUrl":"10.1016/j.enss.2023.10.002","url":null,"abstract":"<div><p>Induced-charge electro-osmosis (ICEO) is a research hotspot in bioengineering and analytical chemistry. Inflow-outflow asymmetry of ICEO was reported in the existing literatures, but systematic study on this phenomenon is insufficient. In this experimental study, we found that in strong electric fields, not only the velocity magnitude but also the vortex positions of ICEO are asymmetrical along the inflow and outflow directions because of the pronounced non-uniform surface electrokinetic transport. On the inflow and outflow directions, the amplitudes of velocities are unequal, ICEO maximum velocity positions change depending on the electric field intensity and sodium chloride (NaCl) concentration. Additionally, the distances between vortex centers are different. At NaCl solution concentration of 0.001 mol·L^–1, the outflow velocity almost vanishes. The asymmetry rises with the increasing electric field intensity. The new discoveries can direct the application of microscale devices.</p></div>","PeriodicalId":100472,"journal":{"name":"Energy Storage and Saving","volume":"3 1","pages":"Pages 16-22"},"PeriodicalIF":0.0,"publicationDate":"2023-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772683523000559/pdfft?md5=a4b45c0fc09da5dc42ec276d4ededa9d&pid=1-s2.0-S2772683523000559-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135761944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recent advances in energy storage and energy saving technologies: SDEWES special issue in 2022","authors":"Wenxiao Chu ,&nbsp;Neven Duić ,&nbsp;Qiuwang Wang","doi":"10.1016/j.enss.2023.09.001","DOIUrl":"10.1016/j.enss.2023.09.001","url":null,"abstract":"<div><p>Over the past few decades, there has been significant attention devoted to the development of advanced technologies for achieving sustainable and environmentally friendly energy production. One prominent event in this field was the 17th SDEWES Conference (Sustainable Development of Energy, Water, and Environment Systems), which took place from November 6–10, 2022, in Paphos, Cyprus. This conference served as a gathering for 496 professionals, comprising scientists, researchers, and experts specializing in sustainable development. Participants came from 52 countries spanning six continents, with 349 attending in person and 147 joining virtually. Prof. Neven Duić, the full professor in the University of Zagreb, originated the SDEWES series since 2002, and serves as the associate editor of Energy Storage and Saving (ENSS) from the journal organization in 2021. This special issue (SI) is the second-time collaboration between SDEWES and ENSS. This editorial focuses on collating the key papers presented during the conference, with a particular emphasis on the pivotal topics including review on electrification and decarbonization, geothermal power utilization, thermal energy storage in heat pump, thermo-economic analysis on thermal system of buildings, industrial policymaking for low-emission technologies and mining investment in Latin America. ENSS also has established the SI for 18th SDEWES in 2023. Manuscripts are welcomed to 18th SDEWES held in Dubrovnik, Croatia on September 24–29, 2023.</p></div>","PeriodicalId":100472,"journal":{"name":"Energy Storage and Saving","volume":"3 1","pages":"Pages 1-4"},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772683523000560/pdfft?md5=1197d5bcea6901189431d7185dfeefd0&pid=1-s2.0-S2772683523000560-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135707861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thermodynamic performance of a cryogenic energy storage system based on natural gas liquefaction","authors":"Xiaoqiao Qin ,&nbsp;Hongbo Tan ,&nbsp;Wei Shen ,&nbsp;Na Wen ,&nbsp;Yu Sun","doi":"10.1016/j.enss.2023.10.001","DOIUrl":"10.1016/j.enss.2023.10.001","url":null,"abstract":"<div><p>Cryogenic energy storage (CES) is a viable method for grid-scale electrical energy storage. Considering the high energy density and mature application of liquefied natural gas (LNG), we proposed an LNG cryogenic energy storage (LNGES) system. A steady-state process model of the LNGES system was established using Aspen HYSYS. The effects of the natural gas composition and key operating parameters such as the charging pressure, discharging pressure, throttling temperature, and liquid storage pressure on the system performance were investigated. A multi-parameter genetic algorithm model built using the MATLAB software was used to optimize the LNGES system to optimize the round-trip efficiency (RTE). Then, an exergy analysis of the optimal configuration was conducted. The results suggested that the LNGES system could achieve optimal RTE and exergy efficiency values of 60.14% and 71.64%, respectively. Exergy destruction mainly occurred during the compression, throttling, expansion, and heat exchange. The proposed LNGES system could be a promising candidate for the large-scale application of CES technology in power grids and gas networks.</p></div>","PeriodicalId":100472,"journal":{"name":"Energy Storage and Saving","volume":"3 1","pages":"Pages 23-29"},"PeriodicalIF":0.0,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772683523000547/pdfft?md5=c5b4113f63dc82483beb8bf877d00407&pid=1-s2.0-S2772683523000547-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135654720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Understanding solid phase diffusion-bonding process of Ni (000)/α-Al2O3 (0001) interface","authors":"Qicheng Chen ,&nbsp;De Qin ,&nbsp;Liang Ouyang ,&nbsp;Xupan Yang ,&nbsp;Yingjin Zhang","doi":"10.1016/j.enss.2023.02.004","DOIUrl":"https://doi.org/10.1016/j.enss.2023.02.004","url":null,"abstract":"<div><p>The dynamic processes and characteristics of solid phase diffusion-bonding of interfacial atoms at high temperatures and the effect of that on bonding strength of Ni (111)/α-Al₂O₃ (0001) interface were investigated through molecular dynamics. It is shown that atomic diffusion occurs at the Ni/Al₂O₃ interface in the temperature range from 698 K to 1,098 K, and proceeds mainly from the Ni side to the Al₂O₃ side. The interface was previously reconstructed by solid bonding below the melting temperature, leading to the amorphization of the interface. Besides, the intermetallic complexes such as Al_mNi_n (e.g., AlNi₃), metal oxide NiO and Ni-Al-O bonds were formed gradually during the diffusion process of atoms. The formation mechanisms of the Ni-Al, Ni-O, and Ni-Al-O bonds are revealed. Based on the reconstructed structure, the adhesion effort at the interface is compared. The higher the temperature, the larger the bond number and the higher the interfacial bonding strength.</p></div>","PeriodicalId":100472,"journal":{"name":"Energy Storage and Saving","volume":"2 3","pages":"Pages 495-502"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49884404","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}

{"title":"Optimal allocation method of energy storage for integrated renewable generation plants based on power market simulation","authors":"Dazheng Liu ,&nbsp;Fei Zhao ,&nbsp;Shu Wang ,&nbsp;Yongmei Cui ,&nbsp;Jun Shu","doi":"10.1016/j.enss.2023.02.007","DOIUrl":"https://doi.org/10.1016/j.enss.2023.02.007","url":null,"abstract":"<div><p>This study designs and proposes a method for evaluating the configuration of energy storage for integrated renewable generation plants in the power spot market, which adopts a two-level optimization model of “system simulation + plant optimization”. The first step is “system simulation” which is using the power market simulation model to obtain the initial nodal marginal price and curtailment of the integrated renewable generation plant. The second step is “plant optimization” which is using the operation optimization model of the integrated renewable generation plant to optimize the charge-discharge operation of energy storage. In the third step, “system simulation” is conducted again, and the combined power of renewable and energy storage inside the plant is brought into the system model and simulated again for 8,760 h of power market year-round to quantify and compare the power generation and revenue of the integrated renewable generation plant after applying energy storage. In the case analysis of the provincial power spot market, an empirical analysis of a 1 GW wind-solar-storage integrated generation plant was conducted. The results show that the economic benefit of energy storage is approximately proportional to its capacity and that there is a slowdown in the growth of economic benefits when the capacity is too large. In the case that the investment benefit of energy storage only considers the income of electric energy-related incomes and does not consider the income of capacity mechanism and auxiliary services, the income of energy storage cannot fulfill the economic requirements of energy storage investment.</p></div>","PeriodicalId":100472,"journal":{"name":"Energy Storage and Saving","volume":"2 3","pages":"Pages 540-547"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49884408","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}

{"title":"The effects of industrial policymaking on the economics of low-emission technologies: the TRANSid model","authors":"Timo Gerres,&nbsp;José Pablo Chaves,&nbsp;Pedro Linares","doi":"10.1016/j.enss.2023.03.003","DOIUrl":"https://doi.org/10.1016/j.enss.2023.03.003","url":null,"abstract":"<div><p>Basic materials such as steel, cement, aluminium, and (petro)chemicals are the building blocks of industrialised societies. However, their production is extremely energy and emission intensive, and these industries need to decarbonise their emissions over the next decades to keep global warming at least below 2 °C. Low-emission industrial-scale production processes are not commercially available for any of these basic materials and require policy support to ensure their large-scale diffusion over the upcoming decades. The novel transition to industry decarbonisation (TRANSid) model analyses the framework conditions that enable large-scale investment decisions in climate-friendly basic material options. We present a simplified case study of the cement sector to demonstrate the process by which the model optimises investment and operational costs in carbon capture technology by 2050. Furthermore, we demonstrate that extending the model to other sectors allows for the analysis of industry- and sector-specific policy options.</p></div>","PeriodicalId":100472,"journal":{"name":"Energy Storage and Saving","volume":"2 3","pages":"Pages 513-521"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49884401","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}

{"title":"Simulation and analysis of a peak regulation gas power plant with advanced energy storage and cryogenic CO2 capture","authors":"Na Wen,&nbsp;Hongbo Tan,&nbsp;Xiaoqiao Qin","doi":"10.1016/j.enss.2023.05.004","DOIUrl":"https://doi.org/10.1016/j.enss.2023.05.004","url":null,"abstract":"<div><p>Flexible gas power plants are subject to energy storage, peak regulations, and greenhouse gas emissions. This study proposes an integrated power generation system that combines liquid air energy storage (LAES), liquefied natural gas (LNG) cold energy utilization, gas power systems, and CO₂ capture and storage (CCS) technologies, named the LAES-LNG-CCS system. The off-peak electricity can be stored in liquid air. During the peak period, air and gas turbines generate supplementary electricity. Both LNG chemical energy and cold energy were considered: the former was used for gas power plants, and the latter was used for LAES regasification and CCS processes. Based on the thermodynamic analysis, we evaluated the effects of the recovery pressure, CCS pressure, and combustion temperature on the system power consumption and efficiency. The results demonstrated that the system recovery pressure, CCS pressure, and combustion temperature had the greatest effects on system power generation. Round-trip efficiency (RTE) was significantly affected by combustion temperature. The largest exergy loss occurred in the gas power plant. The optimal system operating ranges of the system recovery pressure, CCS pressure, and combustion temperature were 6−10 MPa, 0.53−0.8 MPa, and 1,503−1,773 K, where the RTEs and <span><math><msub><mi>η</mi><mrow><mtext>Ex</mtext><mo>,</mo><mspace></mspace><mrow><mi>RS</mi></mrow></mrow></msub></math></span> reached 55%−58.98% and 74.6%−76%, respectively. The proposed system can simultaneously achieve the synergistic functions of large-scale energy storage, multilevel energy utilization, peak regulation, and carbon emission reduction. It can also be widely used in advanced distributed energy storage applications in the future.</p></div>","PeriodicalId":100472,"journal":{"name":"Energy Storage and Saving","volume":"2 3","pages":"Pages 479-486"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49884406","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}