Energy Conversion and Management-X最新文献_第2页

Collaborative optimal scheduling of coal mine integrated energy system based on ventilation air methane blending strategy and adjustable thermoelectric ratio 基于通风-甲烷混合策略和可调热电比的煤矿综合能源系统协同优化调度

IF 7.6

Energy Conversion and Management-X Pub Date : 2025-10-01 DOI: 10.1016/j.ecmx.2025.101285

Ming Lu, Shangyang Zhu, Ying Zou, Pei Li

{"title":"Collaborative optimal scheduling of coal mine integrated energy system based on ventilation air methane blending strategy and adjustable thermoelectric ratio","authors":"Ming Lu, Shangyang Zhu, Ying Zou, Pei Li","doi":"10.1016/j.ecmx.2025.101285","DOIUrl":"10.1016/j.ecmx.2025.101285","url":null,"abstract":"<div><div>The inefficient use of ventilation air methane (VAM) and the excessive operating cost of this type of system pose challenges to the optimal scheduling of coal mine integrated energy systems (CMIESs). In this paper, a collaborative optimal scheduling method is proposed to address these challenges. First, a VAM blending strategy is proposed based on the variable conditions characteristics of a regenerative thermal oxidizer. The strategy enables the efficient use of VAM. Second, to improve the economic efficiency and flexibility of the system, a scheduling model is constructed for a CMIES with consideration of the adjustable thermoelectric ratio. On this basis, an optimal scheduling method with synergistic effects is developed. The VAM blending strategy reduces energy supply costs but requires additional thermal power output space, which can be provided by adjusting the thermoelectric ratio of the CHP unit. A real case for a coal mine is demonstrated to validate the effectiveness of the proposed method. The result illustrates the fact that the proposed method reduces the operational cost of the CMIES and enhances the utilization efficiency of the VAM.</div></div>","PeriodicalId":37131,"journal":{"name":"Energy Conversion and Management-X","volume":"28 ","pages":"Article 101285"},"PeriodicalIF":7.6,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145220563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Energy and cost savings in sustainable building walls: transient heat transfer simulation with PCM and TIM optimization 可持续建筑墙体的能源和成本节约：利用PCM和TIM优化的瞬态传热模拟

IF 7.6

Energy Conversion and Management-X Pub Date : 2025-10-01 DOI: 10.1016/j.ecmx.2025.101227

Humam Kareem Jalghaf , Endre Kovács

{"title":"Energy and cost savings in sustainable building walls: transient heat transfer simulation with PCM and TIM optimization","authors":"Humam Kareem Jalghaf , Endre Kovács","doi":"10.1016/j.ecmx.2025.101227","DOIUrl":"10.1016/j.ecmx.2025.101227","url":null,"abstract":"<div><div>This research provides a deep assessment of the heat transfer in environmentally sustainable building structure fabric, with a particular emphasis on the placement and thickness optimization of both phase change materials (PCMs) and thermal insulation materials (TIM) to improve the thermal performance of the building walls. The analysis utilizes an efficient numerical approach to conduct precise and efficient thermal simulations. Dirichlet boundary conditions, applied to the wall’s exterior surface, are based on recorded year-round weather data and consider the heat transfer convection and radiation effects. Various configurations of PCM and insulation thicknesses are explored to determine the ideal dimensions that maximize thermal comfort in the indoor space. Results are provided in the forms of annual energy load (AEL) , total energy saving (TES), annual energy cost (AEC), annual energy cost saving (AECS), net life cost saving (NLCS), and annual energy saving percentage (AESP). The optimum configurations selected depended on maximizing both the maximum AESP and NLCS. For brick-based wall solutions, the most effective configuration yielded an AESP of 96.6 %, with NLCS up to 288.63 USD/m<sup>2</sup>. In concrete-based solutions, the optimal setup achieved a 98.6 % AESP, equating to a NLCS of 709.77 USD/m<sup>2</sup>. These findings offer valuable guidance for designing sustainable buildings with enhanced thermal performance of the walls, highlighting the effective of the PCMs and insulation integration for achieving peak energy efficiency.</div></div>","PeriodicalId":37131,"journal":{"name":"Energy Conversion and Management-X","volume":"28 ","pages":"Article 101227"},"PeriodicalIF":7.6,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145220566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Coupling of the planning and power system analysis software for high-level penetration of renewable energy sources 可再生能源高水平渗透规划与电力系统分析软件的耦合

IF 7.6

Energy Conversion and Management-X Pub Date : 2025-10-01 DOI: 10.1016/j.ecmx.2025.101298

Nikola Rajakovic , Bojan Ivanović , Ilija Batas Bjelic , Tomislav Rajić

{"title":"Coupling of the planning and power system analysis software for high-level penetration of renewable energy sources","authors":"Nikola Rajakovic , Bojan Ivanović , Ilija Batas Bjelic , Tomislav Rajić","doi":"10.1016/j.ecmx.2025.101298","DOIUrl":"10.1016/j.ecmx.2025.101298","url":null,"abstract":"<div><div>The ambitious electricity production investments might have a degree of uncertainty if current or planned power grid is not analyzed. Strategic planning of the national energy system using only EnergyPLAN annual simulations could be inaccurate resulting in wrong planning decisions because EnergyPLAN does not take power grid into account. Therefore, there is a need to analyze power grid using power system solver in order to complete evaluation of electricity production investments. To address this need, EnergyPLAN and the power system solver CASE are coupled by upgrading CASE to import output files generated by EnergyPLAN. Once the data is imported, CASE allocates the total electricity production across individual power plants based on predefined distribution coefficients, and distributes total consumption to system nodes proportionally to the existing connected loads. Thus, a power system model for load flow calculation is automatically created and calculations are performed for each hour of the year. The goal of this paper is to present original implementation of the coupling of two software tools in the first place, which has not been realized until now, as well as the presentation of the calculation results in the second place. The presented results were selected for being the most interesting among the numerous hours of the year using simulation model of real power system of Republic of Serbia upgraded with planned large renewable electricity production. The result of the work is the coupling of two software tools with a goal of more accurate power system planning. The coupling provides a way to investigate if various scenarios of planned electricity production could be realized regarding transmission grid load flows.</div></div>","PeriodicalId":37131,"journal":{"name":"Energy Conversion and Management-X","volume":"28 ","pages":"Article 101298"},"PeriodicalIF":7.6,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145220569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Energy output assessment and tilt angle optimization of north/south configured bifacial PV module using single diode model in mountainous region 山区单二极管模式南北双面光伏组件发电量评价及倾角优化

IF 7.6

Energy Conversion and Management-X Pub Date : 2025-10-01 DOI: 10.1016/j.ecmx.2025.101302

Elias M. Salilih , Walter D. Leon-Salas , Luis Gerardo Ruiz Gonzalez , Pedro Flores Larico , Miguel Vizcardo Cornejo , Mauricio Postigo-Málaga , Miguel Ocharán Pichu , Juan Manuel Jara Gonzales

{"title":"Energy output assessment and tilt angle optimization of north/south configured bifacial PV module using single diode model in mountainous region","authors":"Elias M. Salilih , Walter D. Leon-Salas , Luis Gerardo Ruiz Gonzalez , Pedro Flores Larico , Miguel Vizcardo Cornejo , Mauricio Postigo-Málaga , Miguel Ocharán Pichu , Juan Manuel Jara Gonzales","doi":"10.1016/j.ecmx.2025.101302","DOIUrl":"10.1016/j.ecmx.2025.101302","url":null,"abstract":"<div><div>This study presents a comprehensive electrical modeling and performance analysis of a bifacial photovoltaic (PV) module using the widely adopted single-diode model traditionally applied to monofacial panels. The model enables detailed characterization of the PV module’s electrical behavior on both the I-V and P-V planes. Hourly solar irradiance data, computed for a 45° north/south tilt, are used to estimate the irradiance levels on both the front and rear surfaces of the bifacial panel. Corresponding cell temperatures are calculated based on these irradiance inputs. An algorithm derived from the single-diode model is employed to determine the hourly power output from each face of the panel. Results indicate that the front face dominates energy generation due to higher irradiance exposure. The study also investigates the influence of tilt angle on annual energy yield, revealing that the optimal tilt angle for the selected location (Arequipa, Peru) is about 26°, approximately 10° higher than the local latitude (15.97°S). However, the mean annual power output at the tilt angle equal to the local altitude is around 179.0 W, which is only 1.2 % lower than the optimum value. This finding supports the applicability of the conventional rule of thumb—tilting panels at the local latitude facing the equator—for rough estimation of the optimum tilt angle in bifacial PV systems, particularly when front-face contribution is dominant.</div></div>","PeriodicalId":37131,"journal":{"name":"Energy Conversion and Management-X","volume":"28 ","pages":"Article 101302"},"PeriodicalIF":7.6,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145220571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The cost of ancillary services in high PV penetration scenarios: the case of Spain 高光伏渗透率情景下的辅助服务成本：以西班牙为例

IF 7.6

Energy Conversion and Management-X Pub Date : 2025-10-01 DOI: 10.1016/j.ecmx.2025.101308

J Alonso-Perez, A Arcos-Vargas, JL Martinez-Ramos

{"title":"The cost of ancillary services in high PV penetration scenarios: the case of Spain","authors":"J Alonso-Perez, A Arcos-Vargas, JL Martinez-Ramos","doi":"10.1016/j.ecmx.2025.101308","DOIUrl":"10.1016/j.ecmx.2025.101308","url":null,"abstract":"<div><div>Renewables should reach a 42.5 % share of total energy consumption by 2030 to meet the EU agenda, which translates to 75–80 % of the electricity generation mix for intermittent renewable resources (wind, solar…). In this context, running out-of-merit thermal power plants just to provide ancillary services (AS) has undesirable side effects, namely: increased supply cost and CO2 emissions, and reduced renewables share in the mix.</div><div>This article proposes a methodology to compare the impact of AS provision in future scenarios with high renewables penetration, mainly photovoltaics (PV), under two different alternatives: 1) AS fully provided by conventional power plants, as is done today; and 2) AS provided by renewable sources, according to marginal market criteria. The future scenarios are built considering the current generation portfolio plus additional wind, PV and battery storage facilities, all of them competing with the marginal thermal technology (combined cycles). The methodology is applied to the Spanish case, keeping in mind the revised National Energy and Climate Plan for 2030. In conclusion, a series of recommendations are made regarding ancillary service provision and storage deployment.</div></div>","PeriodicalId":37131,"journal":{"name":"Energy Conversion and Management-X","volume":"28 ","pages":"Article 101308"},"PeriodicalIF":7.6,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145265611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparative evaluation of metal oxide nanoparticles (Mn3O4, NiO, Mn-doped NiO, and SnO2) on biogas and methane production from cow dung 金属氧化物纳米颗粒（Mn3O4, NiO， mn掺杂NiO和SnO2）对牛粪沼气和甲烷生产的比较评价

IF 7.6

Energy Conversion and Management-X Pub Date : 2025-10-01 DOI: 10.1016/j.ecmx.2025.101317

Jasim Uddin , Rahim Abdur , M. Shahinuzzaman , Md. Nuruzzaman Khan , Mustafizur Rahman Naim , Mohammad Shah Jamal , Mosharof Hossain

{"title":"Comparative evaluation of metal oxide nanoparticles (Mn3O4, NiO, Mn-doped NiO, and SnO2) on biogas and methane production from cow dung","authors":"Jasim Uddin , Rahim Abdur , M. Shahinuzzaman , Md. Nuruzzaman Khan , Mustafizur Rahman Naim , Mohammad Shah Jamal , Mosharof Hossain","doi":"10.1016/j.ecmx.2025.101317","DOIUrl":"10.1016/j.ecmx.2025.101317","url":null,"abstract":"<div><div>The impacts of metal oxide nanoparticles (NPs) on biogas and methane (CH<sub>4</sub>) production were investigated by anaerobic digestion (AD) experiments using cow dung as the raw material. This study aims to enhance the biogas production using metal oxide NPs and a comparative analysis of their effects on it. Spherical Mn<sub>3</sub>O<sub>4</sub>, NiO, Mn-doped NiO, and SnO<sub>2</sub> NPs, with sizes of 58, 27, 26, and 8 nm, respectively, were synthesized and integrated into the AD process to accelerate slurry breakdown and stimulate methanogenic activity, leading to increased biogas and CH<sub>4</sub> production over a 60-day hydraulic retention time (HRT). The addition of the Mn<sub>3</sub>O<sub>4</sub>, NiO, Mn-doped NiO, and SnO<sub>2</sub> NPs to the AD process significantly increased the biogas volume by 1.47, 1.77, 1.76, and 1.87 times more than the control (p < 0.05), respectively. Correspondingly, CH<sub>4</sub> volume was amplified by factors of 1.61, 2.00, 1.97, and 2.15 (p < 0.05) from the control. Notably, SnO<sub>2</sub> NPs exhibited the highest efficacy, achieving the maximum specific biogas and CH<sub>4</sub> production (p < 0.05), with 517.93 mL biogas per g volatile solids (VS) and 334.73 mL CH<sub>4</sub> per g VS in comparison to the control, which produced only 277.53 mL biogas per g VS and 155.73 mL CH<sub>4</sub> per g VS. Moreover, the existence of NPs after completing the AD process was confirmed by analyzing the elemental composition of the post-residue of each treatment. Post-digestion analysis confirmed NPs retention in the solid residue, underscoring their stability within the system. These findings highlight the catalytic potential of metal oxide NPs in optimizing AD and CH<sub>4</sub> generation.</div></div>","PeriodicalId":37131,"journal":{"name":"Energy Conversion and Management-X","volume":"28 ","pages":"Article 101317"},"PeriodicalIF":7.6,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145266353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ultra-short-term wind power forecasting method based on optimized decomposition and deep learning 基于优化分解和深度学习的超短期风电预测方法

IF 7.6

Energy Conversion and Management-X Pub Date : 2025-10-01 DOI: 10.1016/j.ecmx.2025.101315

Xiangyang Shu , Lu Gao , Fei Zhang , Xiaoying Ren , Ling Qin , Yongping Wang , Xilin Wu

{"title":"Ultra-short-term wind power forecasting method based on optimized decomposition and deep learning","authors":"Xiangyang Shu , Lu Gao , Fei Zhang , Xiaoying Ren , Ling Qin , Yongping Wang , Xilin Wu","doi":"10.1016/j.ecmx.2025.101315","DOIUrl":"10.1016/j.ecmx.2025.101315","url":null,"abstract":"<div><div>Accurate wind power forecasting is essential for ensuring power system stability and improving wind integration efficiency. This paper presents a novel ultra-short-term wind power prediction model. First, feature selection is performed on wind power data using Pearson and Spearman correlation coefficients (PCC/SCC) to eliminate redundant features. Then, an Improved Subtraction-Average-Based Optimizer (ISABO) is proposed to optimize the parameters of Variational Mode Decomposition (VMD), decomposing the raw wind power sequences into more stationary subcomponents. Finally, an enhanced Multi-Scale Graph Network (MSGNet) is introduced by incorporating the Dish-TS general paradigm for mitigating distribution shift and a probabilistic sparse self-attention mechanism, resulting in the IMSGNet prediction framework. Experimental results show that the proposed FS-ISABO-VMD-IMSGNet model achieves superior forecasting accuracy, outperforming the state-of-the-art VMD-based DCInformer by reducing the Mean Absolute Error (MAE) by 28.2%. This study provides a more reliable foundation for maintaining power system stability.</div></div>","PeriodicalId":37131,"journal":{"name":"Energy Conversion and Management-X","volume":"28 ","pages":"Article 101315"},"PeriodicalIF":7.6,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145265609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

CO2-to-methanol conversion over promoted Cu/ZnO/Al2O3 catalysts by Ga, Zr, and Co: A comprehensive DFT and experimental study Ga、Zr和Co促进Cu/ZnO/Al2O3催化剂上co2转化为甲醇的综合DFT和实验研究

IF 7.6

Energy Conversion and Management-X Pub Date : 2025-10-01 DOI: 10.1016/j.ecmx.2025.101291

Mohammad Sadegh Arabahmadi , Reza Golhosseini , Saeed Sahebdelfar , Fereshteh Meshkani

{"title":"CO2-to-methanol conversion over promoted Cu/ZnO/Al2O3 catalysts by Ga, Zr, and Co: A comprehensive DFT and experimental study","authors":"Mohammad Sadegh Arabahmadi , Reza Golhosseini , Saeed Sahebdelfar , Fereshteh Meshkani","doi":"10.1016/j.ecmx.2025.101291","DOIUrl":"10.1016/j.ecmx.2025.101291","url":null,"abstract":"<div><div>Methanol synthesis via CO<sub>2</sub> hydrogenation over Cu/ZnO/Al<sub>2</sub>O<sub>3</sub> catalysts is limited by low activity, deactivation, and the reverse water–gas shift reaction. In this study, the influence of Zr, Ga, and Co promoters was evaluated using both co-precipitation and impregnation methods. The catalysts were characterized by XRD, N<sub>2</sub>O chemisorption, H<sub>2</sub>-TPR, TGA, H<sub>2</sub>/CO<sub>2</sub>-TPD, and FE-SEM, while density functional theory (DFT) calculations provided qualitative insights into promoter effects on methoxy stabilization. Co-precipitated catalysts, particularly those containing Zr and Ga, showed improved copper dispersion, smaller crystallite sizes, and enhanced H<sub>2</sub>/CO<sub>2</sub> adsorption. Under reaction conditions (235 °C, 50 bar, H<sub>2</sub>/CO<sub>2</sub> = 3:1), Zr- and Ga-promoted catalysts achieved CO<sub>2</sub> conversions of 42 % and 38 % with methanol selectivities of 98 % and 89 %, respectively. In contrast, Co-promoted catalysts exhibited higher CO and CH<sub>4</sub> selectivities, indicating reduced suitability for methanol synthesis. These findings demonstrate that promoter type and synthesis route strongly influence the structural and catalytic properties of Cu-based catalysts for CO<sub>2</sub> hydrogenation to methanol.</div></div>","PeriodicalId":37131,"journal":{"name":"Energy Conversion and Management-X","volume":"28 ","pages":"Article 101291"},"PeriodicalIF":7.6,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145220570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimization of hybrid AC/DC microgrid management for enhanced energy efficiency 优化交直流混合微电网管理以提高能源效率

IF 7.6

Energy Conversion and Management-X Pub Date : 2025-10-01 DOI: 10.1016/j.ecmx.2025.101295

Chrysanthos Charalambous , Alexis Polycarpou , Venizelos Efthymiou , George E. Georghiou

{"title":"Optimization of hybrid AC/DC microgrid management for enhanced energy efficiency","authors":"Chrysanthos Charalambous , Alexis Polycarpou , Venizelos Efthymiou , George E. Georghiou","doi":"10.1016/j.ecmx.2025.101295","DOIUrl":"10.1016/j.ecmx.2025.101295","url":null,"abstract":"<div><div>The transition toward renewable energy sources (RES) and the increasing complexity of energy demand have necessitated the adoption of hybrid AC/DC microgrids. These systems combine the benefits of AC and DC networks, improving energy efficiency, grid resilience, and cost-effectiveness. This study presents a novel optimization framework for hybrid AC/DC microgrids that incorporates efficient load allocation, battery storage management, and real-system energy profiles. The framework prioritizes DC loads based on efficiency criteria, achieving an optimal allocation of 34% for AC loads and 66% for DC loads, minimizing conversion losses and improving overall system efficiency. Validation of the framework in the FOSS nanogrid demonstrated about 20% reduction in grid imports, highlighting its effectiveness in maximizing local renewable energy utilization. The system’s performance was further enhanced through efficient battery management, achieving charging and discharging efficiencies of 90% while complying with state-of-charge constraints. These findings confirm the framework’s potential as an implementable solution for improving the performance, sustainability, and cost-effectiveness of hybrid distributed grids / microgrids, contributing decisively to the efficient evolution of energy systems and to the global transition to renewable / sustainable energy.</div></div>","PeriodicalId":37131,"journal":{"name":"Energy Conversion and Management-X","volume":"28 ","pages":"Article 101295"},"PeriodicalIF":7.6,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145220055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermoeconomic optimization of a transcritical CO2 combined cooling and power system 跨临界CO2联合冷却与动力系统的热经济优化

IF 7.6

Energy Conversion and Management-X Pub Date : 2025-10-01 DOI: 10.1016/j.ecmx.2025.101292

Somayeh Fathi, Rahim Khoshbakhti Saray , Ali Tavakol Aghaei

{"title":"Thermoeconomic optimization of a transcritical CO2 combined cooling and power system","authors":"Somayeh Fathi, Rahim Khoshbakhti Saray , Ali Tavakol Aghaei","doi":"10.1016/j.ecmx.2025.101292","DOIUrl":"10.1016/j.ecmx.2025.101292","url":null,"abstract":"<div><div>The proposed system is a Combined Cooling and Power (CCP) system, comprising both the transcritical CO<sub>2</sub> Rankine cycle and the transcritical CO<sub>2</sub> cooling cycle. In order to analyze the cycle’s performance from energy, exergy, and exergoeconomic perspectives, a comprehensive thermodynamic and thermoeconomic model of the cycle was developed. The findings revealed that a significant portion of exergy destruction occurs within the power cycle, particularly in the gas heater. Moreover, the average exergy cost in the refrigeration cycle was observed to be higher than that in the power cycle. To optimize the system’s performance, a Multi-Objective Optimization method using a genetic algorithm in MATLAB software was employed, considering 11 decision variables and using the objective functions of exergy efficiency and average cost per unit of exergy of products. The results demonstrated noteworthy improvements, with the exergy efficiency increasing from 32.08% in the base case to 44.15% in the optimal case, and the average cost per unit of exergy of products decreasing from 0.1544 $/MJ in the base case to 0.111 $/MJ in the optimal case. These optimizations signify the potential for enhancing the overall efficiency and cost-effectiveness of the proposed CCP system.</div></div>","PeriodicalId":37131,"journal":{"name":"Energy Conversion and Management-X","volume":"28 ","pages":"Article 101292"},"PeriodicalIF":7.6,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145220054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0