Energy Conversion and Management最新文献_第8页

Refrigerants evaluation and energy performance optimization for a high-temperature carbon dioxide + hydrofluoroolefin / hydrochlorofluoroolefin cascade heat pump dryer with two air heating circuits

IF 9.9 1区工程技术

Energy Conversion and Management Pub Date : 2025-02-26 DOI: 10.1016/j.enconman.2025.119677

Yingjie Xu , Liulu Jia , Yufeng Ye , Jiameng Liu , Xi Shen , Xiaohong Han

{"title":"Refrigerants evaluation and energy performance optimization for a high-temperature carbon dioxide + hydrofluoroolefin / hydrochlorofluoroolefin cascade heat pump dryer with two air heating circuits","authors":"Yingjie Xu , Liulu Jia , Yufeng Ye , Jiameng Liu , Xi Shen , Xiaohong Han","doi":"10.1016/j.enconman.2025.119677","DOIUrl":"10.1016/j.enconman.2025.119677","url":null,"abstract":"<div><div>The carbon dioxide heat pump is promising for energy savings and emission reductions in the drying industry due to its good performance. However, the efficiency of carbon dioxide gas cooler is low under drying working condition, due to significant temperature glide of supercritical state. Moreover, for many drying materials, the drying temperature provided by current heat pumps is still lower than the optimal drying temperature. To resolve these issues, a new low-carbon refrigerant + carbon dioxide transcritical cascade heat pump drying system has been proposed. In this new system, the discharged carbon dioxide from the compressor of low-temperature stage is cooled by both fresh air and the low-carbon refrigerant through two distinct heat exchangers. System simulation and multi-objective optimization are conducted based on experimentally validated model. The results show that when R1234ze(Z) is used at high temperature stage, the system performs the best, with a maximum coefficient of performance of 1.78, heating capacity of 20.2 kW, condensing temperature of 110 ℃, and low-temperature heat source of 10 ℃. The best individual in Pareto front is selected, with 3.55 × 10<sup>4</sup> CNY/year and 3.47 × 10<sup>4</sup> kg/year. The optimal geometric parameters of components are determined as follows, 3.39 m<sup>2</sup> gas-cooler heat transfer area, 48 m<sup>2</sup> condensing heat transfer area and 9.68 MPa parameters of heat rejection pressure. Additionally, the impact of critical factors on system performance was investigated. The new system and the results of this paper are expected to provide new ideas for high-temperature heat pump drying system and system energy saving.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"330 ","pages":"Article 119677"},"PeriodicalIF":9.9,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510416","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

Advancements in biodiesel production from castor oil: A comprehensive review

IF 9.9 1区工程技术

Energy Conversion and Management Pub Date : 2025-02-22 DOI: 10.1016/j.enconman.2025.119622

Ana V. Veličković , Dragana D. Rajković , Jelena M. Avramović , Ana M. Marjanović Jeromela , Miljana S. Krstić , Vlada B. Veljković

{"title":"Advancements in biodiesel production from castor oil: A comprehensive review","authors":"Ana V. Veličković , Dragana D. Rajković , Jelena M. Avramović , Ana M. Marjanović Jeromela , Miljana S. Krstić , Vlada B. Veljković","doi":"10.1016/j.enconman.2025.119622","DOIUrl":"10.1016/j.enconman.2025.119622","url":null,"abstract":"<div><div>Castor (<em>Ricinus communis</em> L.) is a non-food industrial oleaginous crop with the potential for biofuel production. It grows in diverse regions and thrives in marginal soils without competing with food crops. This paper reviews the current state and perspectives of producing biofuels, primarily biodiesel, from castor oil. It begins with a brief introduction to the castor plant, its genetics, and breeding, as well as methods and challenges of castor oil production, extraction, and refinement. Biodiesel production technologies, optimization, kinetics, thermodynamics, and the techno-economic, environmental, and social assessment are discussed. Other castor-based biofuels are highlighted, including bio-jet fuel, biogas, and bioethanol in biorefineries. The future of biofuel production depends on cost-effective and sustainable methods, land availability, and considering various aspects. Challenges remain for large-scale production, but further research can enable castor biomass to become a sustainable and cost-effective feedstock while mitigating environmental and social impacts.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"330 ","pages":"Article 119622"},"PeriodicalIF":9.9,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143471513","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

Clustered carbon capture as a technologically and economically viable concept for industrial post-combustion CO2 capture 集群碳捕获作为工业燃烧后二氧化碳捕获技术和经济上可行的概念

IF 9.9 1区工程技术

Energy Conversion and Management Pub Date : 2025-02-21 DOI: 10.1016/j.enconman.2025.119608

Boreum Lee , Hyunjun Lee , Juli Ayu Ningtyas , Manhee Byun , Atabay Allamyradov , Boris Brigljević , Hankwon Lim

{"title":"Clustered carbon capture as a technologically and economically viable concept for industrial post-combustion CO2 capture","authors":"Boreum Lee , Hyunjun Lee , Juli Ayu Ningtyas , Manhee Byun , Atabay Allamyradov , Boris Brigljević , Hankwon Lim","doi":"10.1016/j.enconman.2025.119608","DOIUrl":"10.1016/j.enconman.2025.119608","url":null,"abstract":"<div><div>Industrial CO<sub>2</sub> emission is a primary contributor to the global warming and as such an accelerator of the climate crisis. Countries worldwide have adopted the ‘Paris Agreement’ to restrict the global temperature rise below 2 ℃, and ideally below 1.5 ℃ compared to the pre-industrial levels. Reactive absorption which utilizes aqueous alkanolamine solvents in an absorption and stripping column tandem is the current de-facto standard for a realistic, industrial-scale, post-combustion carbon capture. The solvent regeneration and high concentration CO<sub>2</sub> release in the stripping column represents the bulk of the process’s operating cost, due to high energy requirement of the reboiler unit (∼4–10 GJ / ton CO<sub>2</sub>). This fact alone makes the process prohibitively expensive in both energy and economic terms for many major CO<sub>2</sub> emitting entities such as fossil fuel power plants, cement producers, refineries, etc. To address this issue in this work we present a new process topology concept entitled Clustered Carbon Capture. A cluster of major CO<sub>2</sub> point sources in a variable radius all with CO<sub>2</sub> absorption columns of appropriate scale share a centralized stripper column appropriately sized to regenerate the solvent for all the points in the cluster. As a proof-of-concept this work has 3 sources (300–2,000 MW coal power plants) and a ∼ 35 km radius. Utilizing the economies of scale on the most expensive and energy intensive unit our expected results should quantify the amount of cost reduction for the CO<sub>2</sub> capture for each individual point of the cluster. Provided that the cost reduction is significant, clustered carbon capture might well represent an indispensable strategy for economic CO<sub>2</sub> reduction on a large-scale, utilizing an already proven technology.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"330 ","pages":"Article 119608"},"PeriodicalIF":9.9,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143471558","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

Energy, exergy, economic, and environmental analysis of waste heat source heat pump industrial steam generation system

IF 9.9 1区工程技术

Energy Conversion and Management Pub Date : 2025-02-21 DOI: 10.1016/j.enconman.2025.119662

Hang Yin, Shicheng Ying, Guangbin Liu, Qichao Yang, Yuanyang Zhao, Liansheng Li

{"title":"Energy, exergy, economic, and environmental analysis of waste heat source heat pump industrial steam generation system","authors":"Hang Yin, Shicheng Ying, Guangbin Liu, Qichao Yang, Yuanyang Zhao, Liansheng Li","doi":"10.1016/j.enconman.2025.119662","DOIUrl":"10.1016/j.enconman.2025.119662","url":null,"abstract":"<div><div>High-temperature steam is a vital energy for heating, washing, drying, and other industrial processes primarily generated by special coal-fired boilers. The heat pump coupled with the steam compressor is a promising steam generation system due to its high efficiency, high heating temperature, and low pollution. In this paper, a mathematical model of a waste heat source heat pump industrial steam generation system (WHPSG) is developed. The system performance is analyzed using energy, exergy, economy, and environment methods when R245fa, R600, and R601 are selected. The results demonstrate better overall system performance at high waste heat temperature and low condensing temperature than at low waste heat or high condensing temperature. Compared to R245fa and R600, the COP<sub>sys</sub> using R601 increased by 3.4% and 3.8%, and power consumption per unit mass flow rate of steam decreased by 3.3% and 3.7. The condensing temperature influences system performance obviously, while the heat pump compressor and steam compressor account for a large percentage of exergy destruction. The system with R601 has the largest total exergy efficiency, which is higher than R245fa and R600 by about 3.0% and 3.2% respectively. The good economic and environmental benefits showed it can be used for steam generation.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"330 ","pages":"Article 119662"},"PeriodicalIF":9.9,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143471557","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

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