Energy Conversion and Management最新文献

Geothermal energy-assisted pumped thermal energy storage: Configuration mapping

IF 9.9 1区工程技术

Energy Conversion and Management Pub Date : 2025-02-20 DOI: 10.1016/j.enconman.2025.119660

Suzhen Yin, Chuangang Bai, Kaiyue Zheng, Yilun Zhang, Xingpeng Yan, Zhan Liu

{"title":"Geothermal energy-assisted pumped thermal energy storage: Configuration mapping","authors":"Suzhen Yin, Chuangang Bai, Kaiyue Zheng, Yilun Zhang, Xingpeng Yan, Zhan Liu","doi":"10.1016/j.enconman.2025.119660","DOIUrl":"10.1016/j.enconman.2025.119660","url":null,"abstract":"<div><div>Unstable renewable energy sources, including wind and photovoltaic power generation with the inherent characteristics of intermittency and randomness, pose an extremely significant challenges to the safety and stability of electrical grids. Considered a viable solution, energy storage technology increases the flexibility and regulatory capacity of power grids by storing and releasing excess electricity at different times. Pump thermal energy storage technology offers an efficient large-scale electricity storage solution that is completely free from geographical location limitations. Skillfully integrating pumped thermal energy storage technology with low-grade heat can effectively improve its thermodynamic and economic performance. To significantly enhance the utilization rate of geothermal energy and effectively achieve a more optimal performance of pumped thermal energy storage systems, the in-depth and comprehensive study conducted a thermo-economic evaluation of 15 types of geothermal-assisted transcritical pumped thermal energy storage systems. This study provides configuration selection maps for the round trip efficiency and the levelized cost of storage, thereby enabling an extremely effective and swift evaluation of the performance of these various configuration systems. When the geothermal temperature changes within the range from 50 °C to 90 °C, the efficiency of the systems that are considered to be the most suitable under these conditions varies from 66.2 % to 105.6 %. This variation in efficiency occurs when the compressor outlet pressure is optimized within the range from 5 MPa to 8 MPa. The system levelized cost of storage declines as geothermal temperature rises and its minimum value is 0.472 CNY/kWh when the geothermal temperature is 90 °C.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"329 ","pages":"Article 119660"},"PeriodicalIF":9.9,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143444837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Towards intelligent management of regional building energy systems: A framework combined with deep reinforcement learning for hybrid energy storage

IF 9.9 1区工程技术

Energy Conversion and Management Pub Date : 2025-02-20 DOI: 10.1016/j.enconman.2025.119656

Rendong Shen , Ruifan Zheng , Dongfang Yang , Jun Zhao

{"title":"Towards intelligent management of regional building energy systems: A framework combined with deep reinforcement learning for hybrid energy storage","authors":"Rendong Shen , Ruifan Zheng , Dongfang Yang , Jun Zhao","doi":"10.1016/j.enconman.2025.119656","DOIUrl":"10.1016/j.enconman.2025.119656","url":null,"abstract":"<div><div>The adoption of renewable energy has been increasingly recognized as a viable solution to the rapid growth in building energy consumption. Integrating energy storage units into building energy systems can effectively mitigate uncertainties associated with renewable energy and enhance the balance between energy supply and demand. Compared to single energy storage systems, hybrid energy storage offers greater regulation potential and flexibility. However, the increased complexity of control strategies due to additional regulation variables presents a significant challenge. Furthermore, existing research often neglects the interactive effects between heat pumps and heat storage units. Addressing these issues, this study examines a regional energy system in Tianjin that integrates renewable energy generation, ground source heat pumps, and hybrid energy storage. The operational characteristics of ground source heat pumps are incorporated to optimize the charging and discharging processes of hybrid energy storage systems. Using a multi-agent deep reinforcement learning algorithm, the study adaptively optimizes the coordinated control of hybrid energy storage with the objectives of enhancing system operational benefits and increasing renewable energy utilization. Compared to a benchmark model, the proposed approach improves net system income by 23.64% and reduces underutilized renewable energy by 27.96%.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"329 ","pages":"Article 119656"},"PeriodicalIF":9.9,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143444836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Seasonal assessment of a hybrid CCHP-photovoltaic system coupled with CAES for a residential building in Rio de Janeiro: Energetic, exergetic, exergoeconomic and environmental analysis

IF 9.9 1区工程技术

Energy Conversion and Management Pub Date : 2025-02-20 DOI: 10.1016/j.enconman.2025.119637

José Eduardo Sanson Portella Carvalho , Florian Pradelle , Romuald Rullière , Rémi Revellin

{"title":"Seasonal assessment of a hybrid CCHP-photovoltaic system coupled with CAES for a residential building in Rio de Janeiro: Energetic, exergetic, exergoeconomic and environmental analysis","authors":"José Eduardo Sanson Portella Carvalho , Florian Pradelle , Romuald Rullière , Rémi Revellin","doi":"10.1016/j.enconman.2025.119637","DOIUrl":"10.1016/j.enconman.2025.119637","url":null,"abstract":"<div><div>Addressing the issues of energy transition requires good practices for better energy management and increase of efficiency, alongside a widespread utilization of renewable energy sources and energy storage, optimized to the consumers’ demands. In this context, a numerical simulation is developed to investigates a trigeneration (electricity, heating, and cooling) scenario applied to a typical on-grid residential building in Rio de Janeiro, Brazil. The studied configuration for the hybrid combined cooling, heat, and power system is mainly composed of photovoltaic panels; a small-scale compressed air storage system with compressors and turbines with intercoolers and preheaters and two air storage tanks; and water tanks functioning as thermal energy storages. The system undergoes an evaluation through an energetic, exergetic, exergoeconomic and environmental (4E) analysis in a quasi-steady state regime. The yearly investigation allows to assess the seasonality effect on the system, and its impacts of different parameters. The results indicate that the proposed system can sustain 94.3 % of the building electric demand. Considering one year of operation, the system has an electric, cogeneration and trigeneration efficiencies of 37.6 %, 41.1 % and 44.3 %, respectively Regarding the exergy performance, the charging process is responsible for most of the exergy destruction of the system due to the low exergy efficiency of the photovoltaic panels. The discharge operation registered a low exergoeconomic factor compared to the charging one. The system operation was able to abate 20.34 tCO<sub>2eq</sub> emissions.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"329 ","pages":"Article 119637"},"PeriodicalIF":9.9,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143453892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Thermo-economic performance analysis of two novel isobaric liquid carbon dioxide energy storage systems coupled with pumped hydro storage

IF 9.9 1区工程技术

Energy Conversion and Management Pub Date : 2025-02-20 DOI: 10.1016/j.enconman.2025.119657

Kun Hou , Boshen Wang , Jiali Guo , Xiangyang Liu , Maogang He

{"title":"Thermo-economic performance analysis of two novel isobaric liquid carbon dioxide energy storage systems coupled with pumped hydro storage","authors":"Kun Hou , Boshen Wang , Jiali Guo , Xiangyang Liu , Maogang He","doi":"10.1016/j.enconman.2025.119657","DOIUrl":"10.1016/j.enconman.2025.119657","url":null,"abstract":"<div><div>Liquid carbon dioxide energy storage is a promising technology for stabilizing renewable power output; however, the inefficiency and diseconomy caused by non-isobaric storage are generally overlooked. In response, this study proposes two novel isobaric liquid carbon dioxide energy storage systems coupled with pumped hydro storage, the pumped hydro storage-assisted and high backpressure pumped hydro storage-assisted systems. These systems achieve isobaric storage by incorporating hydraulically designed carbon dioxide-water co-storage tanks. The study begins with a dynamic behavior analysis of the basic system, followed by a thermo-economic performance comparison, parametric analysis, and an economic uncertainty analysis based on multi-objective optimization. Results show that neglecting non-isobaric storage in the basic system leads to a 26.44 % discrepancy in total exergy efficiency, a 59.67 % relative deviation in energy storage density and an economic overestimation. By avoiding unsteady-state operation, the high backpressure pumped hydro storage-assisted system outperforms the other two, achieving a total exergy efficiency, levelized cost of storage and net present value of 52.95 %, 0.131 $/kWh and 32.24 M$, respectively, while the pumped hydro storage-assisted system achieves the highest energy storage density at 3.85 kWh/m<sup>3</sup>. To further enhance thermo-economic performance, attention can be paid to key components such as compressor, turbine, condenser and tanks. Additionally, the high backpressure pumped hydro storage-assisted system exhibits the most favorable and stable economic performance, with a levelized cost of storage of 0.154 ± 0.022 $/kWh and a net present value of 22.11 ± 9.05 M$. The system economic viability can be further improved by expanding discharge capacity and operating durations, particularly in regions with favorable electricity price structures.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"329 ","pages":"Article 119657"},"PeriodicalIF":9.9,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143453413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

A location-centric transformer framework for multi-location short-term wind speed forecasting

IF 9.9 1区工程技术

Energy Conversion and Management Pub Date : 2025-02-19 DOI: 10.1016/j.enconman.2025.119627

Luyang Zhao , Changliang Liu , Chaojie Yang , Shaokang Liu , Yu Zhang , Yang Li

{"title":"A location-centric transformer framework for multi-location short-term wind speed forecasting","authors":"Luyang Zhao , Changliang Liu , Chaojie Yang , Shaokang Liu , Yu Zhang , Yang Li","doi":"10.1016/j.enconman.2025.119627","DOIUrl":"10.1016/j.enconman.2025.119627","url":null,"abstract":"<div><div>Accurate spatiotemporal wind speed forecasting plays a vital role in power system optimization and renewable energy efficiency. However, conventional models often combine historical wind speed data from multiple locations into uniform feature channels, which compromises their ability to capture spatial correlations and impairs forecasting accuracy. This study proposes that maintaining location-specific distinctions while modeling spatiotemporal relationships can enhance forecasting performance. Based on this premise, this study develops a novel Transformer-based framework with a location-centric architecture that introduces several key innovations: (1) a spatiotemporal gated fusion unit that dynamically integrates geographical coordinates with temporal wind speed data while preserving location-specific information, (2) a restructured Transformer that employs self-attention for modeling spatial correlations across locations while using feedforward networks to capture temporal dependencies, and (3) a dual-enhancement mechanism combining reversible instance normalization to address concept drift and a frequency channel attention mechanism to leverage frequency-domain characteristics. Experimental results show significant improvements in multi-location, multi-step wind speed forecasting accuracy. This enhanced precision directly supports more efficient renewable energy management and grid integration.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"328 ","pages":"Article 119627"},"PeriodicalIF":9.9,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143437148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Enabling low-carbon/low-cost electrified ammonia decomposition reaction for hydrogen supply applications: A multi-step assessment approach

IF 9.9 1区工程技术

Energy Conversion and Management Pub Date : 2025-02-18 DOI: 10.1016/j.enconman.2025.119550

Ali Cherif , Tesfalem Aregawi Atsbha , Ha-Jun Yoon , Chul-Jin Lee

{"title":"Enabling low-carbon/low-cost electrified ammonia decomposition reaction for hydrogen supply applications: A multi-step assessment approach","authors":"Ali Cherif , Tesfalem Aregawi Atsbha , Ha-Jun Yoon , Chul-Jin Lee","doi":"10.1016/j.enconman.2025.119550","DOIUrl":"10.1016/j.enconman.2025.119550","url":null,"abstract":"<div><div>Process electrification is a viable solution for reducing reliance on non-renewable fuels, with green ammonia considered as a promising hydrogen carrier with a gravimetric storage capacity of 17.6 wt%. The incorporation of these two direct CO<sub>X</sub>-free energy systems inevitably facilitates enhanced environmental performance; however, extensive improvements are required to achieve cost-effectiveness. Therefore, this study proposed and optimized the concept of electrified ammonia decomposition (AD) and evaluated it in terms of the technological, environmental, and economic feasibilities. To mitigate indirect CO<sub>2</sub> emissions, a novel electrification process was proposed wherein a multi-concentric porous heater (MCPHs-AD) configuration was developed and compared to the natural gas heated (NGH-AD) process and the conventional electrically heated wall-adjacent heated reaction (WAH-AD.) A multi-step analysis approach was implemented, involving various scenarios of electricity sources (gray, blue, and green energy), to thoroughly assess the economic and environmental feasibility of the heat supply routes for the hydrogen refueling station. The non-feasibility of electrification was highlighted when using gray electricity owing to increased cost and CO<sub>2</sub> emissions of 12.8 USD/kg-H<sub>2</sub> and 10.5 kg-CO<sub>2</sub>/kg-H<sub>2</sub>, respectively. The application of CCS-integrated electricity reduced the carbon intensity by 14.3 % and 11.6 % for WAH-AD and MCPHs-AD, respectively, compared to NGH-AD with up to 14.7 % increase in cost. For the 2050 scenario, green electricity implementation reduced the carbon emissions and cost to 10.7 USD/kg-H<sub>2</sub> and 3.5 kg-CO<sub>2</sub>/kg-H<sub>2</sub> when using MCPHs-AD with up to 8.2 % decrease in carbon intensity compared to WAH-AD. This achievement is attributable to the high energy efficiency because of the high surface area of the MCPHs-AD.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"328 ","pages":"Article 119550"},"PeriodicalIF":9.9,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143430307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Production of carbon-negative syngas through CO2-driven thermochemical conversion of acacia sawdust

IF 9.9 1区工程技术

Energy Conversion and Management Pub Date : 2025-02-18 DOI: 10.1016/j.enconman.2025.119659

Dongho Choi , Hyungtae Cho , Jonghun Lim , Eilhann E. Kwon

{"title":"Production of carbon-negative syngas through CO2-driven thermochemical conversion of acacia sawdust","authors":"Dongho Choi , Hyungtae Cho , Jonghun Lim , Eilhann E. Kwon","doi":"10.1016/j.enconman.2025.119659","DOIUrl":"10.1016/j.enconman.2025.119659","url":null,"abstract":"<div><div>This paper proposes a strategic approach for producing carbon-negative syngas through the thermochemical conversion of biomass using acacia sawdust as a model compound. CO<sub>2</sub> was employed as the reactive medium during the pyrolysis of acacia sawdust to increase the conversion of carbon in biocrude into syngas. In the single-stage pyrolysis, more production of CO under CO<sub>2</sub> than N<sub>2</sub> condition was observed above 580 ˚C. This observation demonstrated that the reaction in gaseous medium between the CO<sub>2</sub> and volatile matter released from the thermolysis of acacia sawdust did occur. However, the kinetics of the reaction in gaseous medium driven by CO<sub>2</sub> were slow. As such, a Ni-based catalyst was introduced to promote the kinetics of reaction in gaseous medium driven by CO<sub>2</sub>. Introducing CO<sub>2</sub> in the catalytic pyrolysis further increased the yield of syngas, reaching 22.8 mmol g<sub>sample</sub><sup>-1</sup>, which was higher than that under N<sub>2</sub> conditions (18.6 mmol g<sub>sample</sub><sup>-1</sup>). The proposed process (CO<sub>2</sub>-driven catalytic pyrolysis of acacia sawdust) achieved a net CO<sub>2</sub> emission of −151.0 mg g<sub>sample</sub><sup>-1</sup>. All the experimental findings show that the CO<sub>2</sub>-drvien catalytic pyrolysis system may serve as an effective strategy for carbon-negative syngas production, contributing to greenhouse gas (CO<sub>2</sub>) mitigation.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"329 ","pages":"Article 119659"},"PeriodicalIF":9.9,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143437856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Marine alternative fuels for shipping decarbonization: Technologies, applications and challenges

IF 9.9 1区工程技术

Energy Conversion and Management Pub Date : 2025-02-18 DOI: 10.1016/j.enconman.2025.119641

Zhongwei Li , Kai Wang , Hongzhi Liang , Yapeng Wang , Ranqi Ma , Jianlin Cao , Lianzhong Huang

{"title":"Marine alternative fuels for shipping decarbonization: Technologies, applications and challenges","authors":"Zhongwei Li , Kai Wang , Hongzhi Liang , Yapeng Wang , Ranqi Ma , Jianlin Cao , Lianzhong Huang","doi":"10.1016/j.enconman.2025.119641","DOIUrl":"10.1016/j.enconman.2025.119641","url":null,"abstract":"<div><div>Under the background of increasingly stringent emission regulations and the urgent necessity for decarbonization of the shipping industry, the application of marine alternative fuel technologies is crucial for reducing CO<sub>2</sub> emissions from vessels and achieving the mid-term and long-term carbon reduction targets in the shipping industry. This research focuses on the application technologies of the typical marine alternative fuels, including the LNG (liquefied natural gas), methanol, hydrogen and ammonia. The current research and application status of marine alternative fuels for shipping decarbonization are systematically examined, and the comprehensive analysis and discussions of the marine alternative fuels are carried out. On these foundations, the challenges and issues in the practical implementation of these technologies are discussed, and the future research directions are proposed, with the goal of offering insights for the development and practical applications of marine alternative fuels. The comprehensive analysis reveals that the marine alternative fuel applications can effectively reduce CO<sub>2</sub> emissions of ships, and the life cycle environmental and economic analysis can provide important guidance for selecting suitable alternative fuels for different ships. In the future, the key technologies considering the impact of various influence factors should be further studied to promote the practical applications of the marine alternative fuels, and thus contributing to the energy transitions and carbon reduction of the shipping industry.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"329 ","pages":"Article 119641"},"PeriodicalIF":9.9,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143437855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 efficient thermal water pump for electricity-free recovery of industrial waste heat

IF 9.9 1区工程技术

Energy Conversion and Management Pub Date : 2025-02-17 DOI: 10.1016/j.enconman.2025.119640

Deepak Sharma , Durga Prasad Ghosh , Sandra Jean Dennis , Xiang Zhang , Bahman Abbasi

{"title":"An efficient thermal water pump for electricity-free recovery of industrial waste heat","authors":"Deepak Sharma , Durga Prasad Ghosh , Sandra Jean Dennis , Xiang Zhang , Bahman Abbasi","doi":"10.1016/j.enconman.2025.119640","DOIUrl":"10.1016/j.enconman.2025.119640","url":null,"abstract":"<div><div>Industrial waste heat (IWH) below 200 ℃ forms an immense source of free and clean energy, which contributes directly to global warming if not recovered. This paper presents a novel use of thermal water pump (TWP) to efficiently recover low-grade IWH without using electricity. TWPs use phase-change of working fluid for discharge and suction of pumped fluid. Existing TWPs have low pumping efficiency and discontinuous discharge, which is uneconomical and impractical for industrial processes. This paper optimizes TWP design for industrial purposes: first, by identifying parameters controlling TWP pumping performance and optimizing system design. Particularly, vapor flow path is optimized to increase efficiencies by 10 folds. Additionally, heat rejected from the condenser is recycled to heat discharge water. The energy recovery efficiency (ERP) is achieved comparable to forced and natural circulation solar water heaters (30–60 %). Second, continuous discharge is produced by suppressing fluctuation by 80 % using an inline accumulator. The highest ERP of 39 % is achieved for 16 L/h discharge at 48 ℃ over 70 ℃ temperature difference. A payback period of 4.2 years is estimated for 5 kW system. Our TWP can enable an annual recovery of 4087 kWh equivalent to $940 USD. A levelized energy cost of 0.23 USD/kWh is achieved equivalent to photovoltaic (PV) system (0.21–0.26 USD/kWh). Our TWP is intended to supply hot saline to our patented desalination system without electric pumps. This study highlights the potential of TWPs to efficiently and economically recover the untapped low-grade IWH, and paves path for a sustainable future.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"329 ","pages":"Article 119640"},"PeriodicalIF":9.9,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143428847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Numerical study on coupled heave-pitch motions of multi-body Salter’s duck-WEC with a floating platform in regular and irregular waves

IF 9.9 1区工程技术

Energy Conversion and Management Pub Date : 2025-02-17 DOI: 10.1016/j.enconman.2025.119639

Mostafa Jafarzadeh Khatibani , Hassan Ghassemi , Mahmoud Ghiasi

{"title":"Numerical study on coupled heave-pitch motions of multi-body Salter’s duck-WEC with a floating platform in regular and irregular waves","authors":"Mostafa Jafarzadeh Khatibani , Hassan Ghassemi , Mahmoud Ghiasi","doi":"10.1016/j.enconman.2025.119639","DOIUrl":"10.1016/j.enconman.2025.119639","url":null,"abstract":"<div><div>The hybrid concept of multi-body Salter’s duck wave energy converter (WEC) provides viable solutions to improve power absorption and reduce the cost of energy. In this paper, the coupled heave-pitch motions of the Salter’s duck combining a floating platform in regular and irregular waves are numerically investigated. The Computational Fluid Dynamics (CFD) based on the Reynolds-averaged Navier-Stokes (RANS) and shear-stress transport <span><math><mrow><mi>k</mi><mo>-</mo><mi>ω</mi></mrow></math></span> turbulence model is employed to simulate the whole system under regular and irregular waves generated using the Joint North Sea Wave Project (JONSWAP) wave spectrum, utilizing data gathered from Astara port in the Caspian Sea. We conducted analyses for three distinct scenarios (without platform, fixed platform, and heaving platform) to examine the variations in motion response, power absorption, and performance efficiency. Several significant factors were analyzed, such as differences in wave height, wave period, and angles of incident waves for both fixed and heaving devices. The heaving platform captures maximum power at the wave period of five seconds, while peak performance efficiency is achieved at four seconds. The optimum power take-off (PTO) damping of the single duck under the irregular wave spectrum is found to be 22.5 kN.m.s/rad. The research findings indicate that the heaving platform has a marginally lower wave power capture efficiency than the fixed platform. However, it maintains a consistent pattern in energy absorption from waves and shows reduced sensitivity to fluctuations in wave period, thereby improving its performance reliability.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"329 ","pages":"Article 119639"},"PeriodicalIF":9.9,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143418945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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