Energy Conversion and Management最新文献

{"title":"A PCM based finned heat sink coupled with a finned heat pipe is an efficient thermal management option for portable electronic gadgets","authors":"Bikash Kumar,&nbsp;Y. Naresh,&nbsp;J. Banerjee","doi":"10.1016/j.enconman.2026.121118","DOIUrl":"10.1016/j.enconman.2026.121118","url":null,"abstract":"<div><div>Efficient thermal regulation of compact electronic devices remains a critical challenge as power densities continue to increase, necessitating effective passive cooling solutions. In PCM-based thermal management systems, the discharge cycle is just as important as the charging cycle, but it is often not studied enough. This work experimentally investigates in detail four different configurations of a heat sink (HS) with a phase change material (PCM): (i) a PCM-filled heat sink (PHS), (ii) a PCM-filled finned heat sink (PFHS), (iii) a PCM-filled finned heat sink integrated with a heat pipe (PFHSHP), and (iv) a PCM-filled finned heat sink coupled with a finned heat pipe (PFHSFHP). Docosane is the selected phase change material, and the tests are carried out at different power inputs (6, 8, 10, and 12 W) and controlled surrounding temperatures (24, 26, and 28 °C). The findings reveal that thermal performance depends to a large extent on the configuration and ambient conditions, and better performance is achieved at surrounding temperature of 24 °C. Among the investigated designs, the PFHSFHP configuration consistently exhibits the best charging and discharging performance across all operating conditions. For example, at an 8 W power level and S_T = 28 °C, the percentage improvement in charging time in PFHSFHP compared to PHS, PFHS, and PFHSHP is 35.49 %, 34.06 %, and 27.54 % respectively. Under the same conditions, the percentage reduction in discharging time is 30.94 %, 18.78 %, and 11.99 % respectively. The performance increase is mainly due to better heat spreading and faster heat rejection, which were made possible by the finned condenser section of the heat pipe, which maintained a higher thermal driving potential during both the melting and solidification of the PCM. Energy-based thermodynamic analysis further confirms the dominant role of the heat pipe in heat transport, particularly during the discharging phase. In summary, the PFHSFHP setup is a powerful and reliable passive thermal management method that can be utilized for the next generation of miniaturized electronic devices, offering extended thermal buffering, accelerated heat dissipation, and enhanced operational stability.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"352 ","pages":"Article 121118"},"PeriodicalIF":10.9,"publicationDate":"2026-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146033468","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}

{"title":"Selection of underground hydrogen storage systems using a novel fuzzy model","authors":"Ömer Faruk Görçün ,&nbsp;Gülay Demir ,&nbsp;Dragan Pamucar ,&nbsp;Vladimir Simic","doi":"10.1016/j.enconman.2026.121082","DOIUrl":"10.1016/j.enconman.2026.121082","url":null,"abstract":"&lt;div&gt;&lt;div&gt;Storing hydrogen resources underground can accelerate the transition to renewable energy, facilitate energy supply security, and the adoption and expansion of hydrogen energy, a clean energy source. The selection of sustainable underground hydrogen storage systems is a critical research topic for addressing environmental issues caused using fossil fuels. However, decision-makers still lack a consensus-based and sustainability-oriented framework that can comparatively evaluate alternative underground hydrogen storage geological formations under economic, environmental, social, and technical uncertainties, which constitutes a critical barrier to large-scale hydrogen deployment. This issue has become more prominent as fossil-based fuel reserves are gradually decreasing worldwide. In contrast, researchers and practitioners lack a consensus on which underground storage method is most suitable for economical, safe, and efficient hydrogen storage. If this problem is not addressed correctly and reasonable solutions are not obtained, continued dependence on fossil fuels may persist. Alternatively, other renewable energy sources with relatively lower efficiency and performance may be adopted. In both cases, significant delays in achieving the global sustainability goal are likely to occur. We propose an integrated fuzzy decision-making framework (F-WENSLO &amp; Dombi-Bonferroni &amp; F-ARTASI) to address this selection problem under uncertainty. The proposed framework integrates fuzzy WENSLO (Weights by ENvelope and SLOpe) for robust sustainability-based criteria weighting, the Dombi–Bonferroni aggregation operator to model interdependencies among criteria explicitly, and the fuzzy ARTASI (Alternative Ranking Technique based on Adaptive Standardized Intervals) method to provide flexible and stable ranking of geological alternatives beyond rigid distance-based approaches. Key advantages of the proposed model include producing reliable and consistent solutions that accurately reflect real-world conditions for selecting sustainable underground hydrogen storage systems. The results revealed that C14 (job creation and employment opportunities) (0.0603) is the most influential criterion in selecting the most suitable storage system. In addition, salt caverns with an &lt;span&gt;&lt;math&gt;&lt;mrow&gt;&lt;msub&gt;&lt;mi&gt;Ω&lt;/mi&gt;&lt;mi&gt;i&lt;/mi&gt;&lt;/msub&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt; of 10,5167 have achieved the highest score, placing them in the first position, and it is the most suitable and advantageous underground hydrogen storage option. The suggested decision-making tool can yield reliable and robust solutions in real-world conditions, enabling the planning of infrastructure design for hydrogen energy systems that incorporate sustainability dimensions. In that regard, the developed model possesses the characteristics of an efficient and practical roadmap that can guide policymakers and decision-makers in transitioning from fossil-based energy sources to renewable energy sources. It has been i","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"352 ","pages":"Article 121082"},"PeriodicalIF":10.9,"publicationDate":"2026-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146036400","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}

{"title":"Research on the performance and mode switching strategy of the photovoltaic/thermal-air dual heat source direct expansion heat pump system based on micro heat pipe arrays","authors":"Ze Bai ,&nbsp;Yaohua Zhao ,&nbsp;Zhenhua Quan ,&nbsp;Yiyang Liu ,&nbsp;Wanli Chang","doi":"10.1016/j.enconman.2026.121125","DOIUrl":"10.1016/j.enconman.2026.121125","url":null,"abstract":"<div><div>Conventional flat-plate photovoltaic/thermal (PVT) modules suffer from low solar energy utilization efficiency and unstable heat supply when used as heat pump evaporators. Additionally, their heat dissipation capabilities are limited when used as condensers. To address these limitations, this study proposes a novel micro heat pipe array-integrated PVT–air evaporator/condenser (MHPA-PVTAE/C), coupled with a dual-source direct expansion heat pump. Seasonal experiments were conducted to characterize its trigeneration performance, and an adaptive heating-mode switching strategy was developed using the coefficient of performance for heating (<em>COP(H)</em>) as the optimization objective based on solar irradiance and ambient temperature. The system achieved a <em>COP(H)</em> of 6.2 (summer) and 4.9 (winter), power generation efficiency of up to 14%, and a <em>COP(C)</em> of 2.7. Throughout continuous multi-day tests, the compressor exhaust temperature remained below 90 °C, and the suction/exhaust pressure variation rates were both below 5%, demonstrating reliable and stable operation when the MHPA-PVTAE/C functioned as the evaporator or condenser. Compared with existing systems, the novel system enhanced the <em>COP(H)</em> by 13.1–68.1% (summer) and 15.3–75.2% (winter), and increased the <em>COP(C)</em> by 5.2–42.4%, providing a validated technical route for building-scale trigeneration system.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"352 ","pages":"Article 121125"},"PeriodicalIF":10.9,"publicationDate":"2026-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146036398","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}

{"title":"Semi-supervised anomaly detection in photovoltaic systems under power tracking mode","authors":"Fouzi Harrou ,&nbsp;Abdelkader Dairi ,&nbsp;Abdelhakim Dorbane ,&nbsp;Bilal Taghezouit ,&nbsp;Ying Sun","doi":"10.1016/j.enconman.2026.121114","DOIUrl":"10.1016/j.enconman.2026.121114","url":null,"abstract":"<div><div>Fault detection in grid-connected photovoltaic (GCPV) systems is critical for ensuring operational safety and efficiency, yet the availability of labeled fault data in real-world deployments is limited. Reliable anomaly detection in GCPV systems is vital for ensuring operational safety, minimizing energy losses, and maintaining efficiency. This study presents a systematic, mode-aware benchmarking of semi-supervised anomaly detection methods for GCPV monitoring under realistic operating conditions. This study evaluates four semi-supervised techniques, Isolation Forest (iForest), Local Outlier Factor (LOF), One-Class SVM (1SVM), and Elliptic Envelope (EE), for fault detection in GCPV systems operating under Intermediate and Maximum Power Point Tracking (IPPT/MPPT) modes. Using the GPVS-Faults dataset, which contains simulated fault scenarios generated from a grid-connected PV system emulator, all models are trained exclusively on fault-free data, following a strictly semi-supervised paradigm, and evaluated across multiple metrics, including accuracy, F1-score, AUC, and false positive rate (FPR). Experimental results show that EE achieves the best average accuracy and AUC with the lowest FPR across both operating modes, reaching an average accuracy of 94.68% under MPPT and 93.54% under IPPT. LOF exhibits the highest sensitivity and F1-score, but at the expense of increased false positives, while iForest provides a balanced trade-off between precision and recall. Beyond detection performance, this work emphasizes reproducibility and interpretability in semi-supervised PV fault detection. To enhance transparency, SHapley Additive exPlanations (SHAP) analysis is used as a post-hoc interpretability layer based on an auxiliary XGBoost model, revealing fault-specific feature contributions aligned with physical system behavior. Overall, the results demonstrate complementary strengths among the evaluated methods and highlight the effectiveness of EE for low-false-alarm fault detection, alongside the value of lightweight, explainable, and mode-aware semi-supervised frameworks in supporting GCPV monitoring.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"352 ","pages":"Article 121114"},"PeriodicalIF":10.9,"publicationDate":"2026-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146036462","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}

{"title":"Integrating weather extremes and desalination flexibility to design a resilient concentrated solar power–photovoltaic–wind system with battery and thermal storage using TRNSYS","authors":"Farah Souayfane ,&nbsp;Ricardo M. Lima ,&nbsp;Asaad Katoua ,&nbsp;Omar Knio","doi":"10.1016/j.enconman.2026.121064","DOIUrl":"10.1016/j.enconman.2026.121064","url":null,"abstract":"<div><div>Integrating large-scale renewable energy and storage systems is essential for sustainability in hot desert regions. However, resource variability and extreme weather pose operational and economic challenges, emphasizing the need for resilient systems. This study develops a TRNSYS simulation-based multi-objective optimization framework to design a resilient renewable energy system for a community in Saudi Arabia. Its novelty lies in the iterative incorporation of extreme weather derived from 25 years of historical weather data and the leveraging of sector coupling through the operational flexibility of a desalination plant. The optimization identifies optimal capacities for a system combining concentrated solar power, photovoltaic, and wind turbines, coupled with battery and thermal storage. The most economical off-grid configuration yields a life cycle cost of $1.46 billion and a levelized cost of energy of 0.1687 $/kWh with concentrated solar power supplying 96% of the energy (peak load of 86 MW and annual energy consumption of 505 GWh), which avoids 330,900 tonnes of <span><math><msub><mrow><mi>CO</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span> emissions per year. This off-grid system, designed to withstand past extreme low solar radiation and high temperature days, requires additional generation and storage capacity, which increases the cost by 19%. Leveraging the desalination plant’s operational flexibility reduces the system’s cost by 2.7% while further enhancing system resilience. The framework provides a practical and adaptable method for designing resilient renewable energy systems in response to variable extreme weather conditions, highlighting the cost of resilience and demonstrating that power coupling with desalination can help mitigate the cost of achieving resilience.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"351 ","pages":"Article 121064"},"PeriodicalIF":10.9,"publicationDate":"2026-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146023449","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}

{"title":"Cascade-pumped micro-hydro storage systems: A new design framework for efficient energy generation and storage in challenging topographies","authors":"Oraib Dawaghreh,&nbsp;Sharaf K. Magableh,&nbsp;Caisheng Wang","doi":"10.1016/j.enconman.2026.121105","DOIUrl":"10.1016/j.enconman.2026.121105","url":null,"abstract":"<div><div>Hydropower opportunities in many lake-rich regions remain largely unexploited. This is because long horizontal distances and modest elevation differences prohibit the feasibility of traditional pumped storage systems. The need for terrain-adaptive long-duration storage motivates the exploration of multi-stage, cascade-based designs capable of bridging these spatial constraints. This study investigates whether introducing intermediate reservoirs can transform geographically constrained lake systems into practical pumped hydro storage sites. An integrated modeling framework, including hydropower, solar, and wind simulation, geospatial analysis, and multi-objective evolutionary optimization, is applied using real meteorological and electrical load data from Mountain Lake, Michigan to determine optimal reservoir locations, storage capacities, and renewable generation sizing. Three cases were evaluated to assess the impact of different cascade configurations. Among them, the configuration with one intermediate reservoir achieves approximately 99.97 percent reliability with a levelized cost of energy between 0.133 and 0.165 USD per kilowatt-hour, while the two-reservoir arrangement demonstrates even lower cost and higher reliability. These findings demonstrate that a cascade configuration can significantly improve hydraulic performance and economic feasibility in low-slope terrains. The study concludes that multi-stage micro-pumped hydro architectures offer a geographically adaptable pathway for long-duration energy storage and can be deployed in regions where conventional two-reservoir systems are not viable.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"352 ","pages":"Article 121105"},"PeriodicalIF":10.9,"publicationDate":"2026-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146033474","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}

{"title":"Dynamic modelling and characteristics analysis of a novel in situ tar-rich coal pyrolysis mining system driven by solar energy","authors":"Mei Wang ,&nbsp;Guoming Wen ,&nbsp;Lang Liu ,&nbsp;Shuangming Wang","doi":"10.1016/j.enconman.2026.121101","DOIUrl":"10.1016/j.enconman.2026.121101","url":null,"abstract":"<div><div>As a strategic alternative to conventional oil and gas resources, tar-rich coal, coupled with its low-carbon in-situ extraction technologies, is rapidly emerging as a pivotal focus for sustainable energy development. This study presents an innovative tower type solar in-situ pyrolysis system for tar-rich coal (TS-IPS/TRC) to significantly reduce energy consumption in tar-rich coal extraction. A transient multiphysics model, integrating solar thermal conversion, nitrogen mediated heat transfer, and pyrolysis reaction kinetics, was constructed to investigate the influence of two critical operating parameters, nitrogen temperature and flow rate, on the dynamic behavior of the system. The results demonstrate that the heating rate during the initial pyrolysis stage is more responsive to variations in flow rate. Spatially, increasing the flow rate significantly enhance the heating effect near the injection well, while the effect gradually diminish in the regions farther away from the injection well. In accordance with system operational requirements, the optimal pyrolysis temperature was ascertained to be 983.15 K under a 24–hour cyclic operation strategy. In light of the temporal variations in solar energy, three operational approaches were subjected to rigorous evaluation. The results reveal that intermittent operation coupled with an elevated inlet temperature and a reduced flow rate of the heat transfer medium significantly enhances techno–economic performance. The intermittent heating mode effectively improves temperature uniformity within the pyrolysis zone. A 12–hour cyclic operation strategy is recommended. Increasing the inlet temperature from 933.15 K to 1033.15 K and decreasing the inlet flow velocity from 5 m/s to 2 m/s substantially increases the gas production rate by 61 %. The TS-IPS/TRC system can reduce power consumption by 61 % and decrease carbon emissions by 2.52 × 10⁸ kg under the pyrolysis condition of 80 % of tar-rich coal. The proposed system demonstrates great potential in terms of energy conservation and emission reduction by pioneering a novel method for sustainable extraction of tar-rich coal in a low-carbon way.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"352 ","pages":"Article 121101"},"PeriodicalIF":10.9,"publicationDate":"2026-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146033472","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}

{"title":"Performance and viability of transpired solar collectors for pre-heating ventilation air","authors":"Talie Tohidi Moghadam ,&nbsp;Brian Norton ,&nbsp;Ken Bruton ,&nbsp;Dominic T.J. O’Sullivan","doi":"10.1016/j.enconman.2026.121055","DOIUrl":"10.1016/j.enconman.2026.121055","url":null,"abstract":"<div><div>Reducing heating-related energy demand in buildings is a critical step toward decarbonisation. This study investigates the feasibility of using unglazed transpired solar collectors to pre-heat ventilation air. It is hypothesised that such systems can significantly lower energy use and carbon emissions while offering economic benefits. An experimental unglazed transpired solar collectors system was installed in a university building in Cork, Ireland, and its performance was evaluated through real-time measurements and validated against simulations using the “RETScreen Expert” tool. The validated model was then scaled to a full-facade application (163 m²), estimating a 24% reduction in annual heating energy use and a 23.4% decrease in greenhouse gas emissions. The system demonstrated a simple payback period of 10.3 years and an internal rate of return of 12.2% on equity. However, the financial outcomes remain closely linked to future heating fuel price trends, and the exclusion of auxiliary equipment costs (e.g., ducts, fans, filters) reflects a focus on core system performance based on reliably available data. These findings highlight the potential of unglazed transpired solar collectors for energy savings and emissions reduction, while also identifying areas for further research and detailed cost modelling.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"352 ","pages":"Article 121055"},"PeriodicalIF":10.9,"publicationDate":"2026-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146033475","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}

{"title":"Transient characteristics of recompression supercritical CO2 power system under variable heating and cooling conditions","authors":"Wenxi Jiang,&nbsp;Xin Wang,&nbsp;Yuanyang Zhao,&nbsp;Yunxia Liu,&nbsp;Guangbin Liu,&nbsp;Qichao Yang,&nbsp;Liansheng Li","doi":"10.1016/j.enconman.2026.121117","DOIUrl":"10.1016/j.enconman.2026.121117","url":null,"abstract":"<div><div>As one of the cutting-edge power technologies, the supercritical carbon dioxide (sCO₂) Brayton cycle (SCBC) power generation system features broad heat source compatibility. Beyond traditional fossil fuels, it can be coupled with fourth-generation nuclear reactors or concentrating solar thermal systems, demonstrating significant development potential. This study investigates the dynamic behavior of a recompression sCO₂ Brayton cycle (RCBC) power system through variations in the mass flow rates of fluids in the heater hot side (HHS) and the pre-cooler cold side (PCS). The results show that when the HHS flow rate changes, the system takes about 300 s to stabilize; while the system stabilizes faster when the PCS flow rate changes, reaching stability in about 200 s. However, the excessive flow rate in the HHS induces severe temperature transients that may lead to thermo-mechanical fatigue in the heater. A reduction in the flow rate in the HHS nonlinearly degrades the turbine performance. When the flow rate drops by 25%, the turbine efficiency only decreases by 0.3%. When the flow rate drops by 75%, the turbine efficiency decreases by 5.5%. The influence of the change in the HHS flow rate on the efficiency of the compressor can be ignored. However, the main compressor is highly sensitive to changes in the flow rate in the PCS. When the flow rate drops by 50%, the efficiency of the main compressor decreases by approximately 0.5%. For every 25% increase in the flow rate, the efficiency of the main compressor rises by nearly 0.3%. Adjusting the flow rate in the PCS can rapidly change total compressor power consumption, and adjusting the flow rate in the HHS can rapidly change the net power of the turbine. This study provides a reference for designing reasonable control strategies when disturbances occur in the HHS or PCS for RCBC systems, aiming to reduce system response time and mitigate detrimental fluctuations.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"352 ","pages":"Article 121117"},"PeriodicalIF":10.9,"publicationDate":"2026-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146033471","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}

{"title":"Exergy, exergoeconomic, and exergoenvironmental assessment of a flared gas-fuel SOFC-gas turbine hybrid system","authors":"Mariem Hentati,&nbsp;Ahlem Boussetta,&nbsp;Amal Elleuch,&nbsp;Kamel Halouani","doi":"10.1016/j.enconman.2026.121090","DOIUrl":"10.1016/j.enconman.2026.121090","url":null,"abstract":"<div><div>This study presents an advanced thermodynamic assessment of a hybrid SOFC-Gas Turbine system designed to valorize flared gas. Building on previous numerical modeling in ASPEN PLUS V14 and MATLAB softwares, the analysis is extended through exergy-based 3E methodologies namely exergy, exergoeconomic, and exergoenvironmental analyses, with environmental impacts allocated to exergy streams using LCA. The system achieves a first-law efficiency of 63.04%, an exergetic efficiency of 37.5%, and total exergy destruction cost and environmental impact rates of 7655.73 $/h and 777.02 Pts/h, respectively. Results show that the GT-subsystem contributes most to the exergy destruction, cost formation, and environmental burden, while the IR-SOFC-subsystem exhibits superior thermodynamic and economic performance. The SOFC generates electricity at a markedly lower unit cost (0.072 $/MJ) and with a lower specific environmental impact (37.64 mPts/MJ) than the GT equipment (0.42 $/MJ and 51.12 mPts/MJ). The carbon footprint assessment of the proposed hybrid system demonstrates its strong competitiveness, with CO₂ emission levels (0.125 t/GJ). Despite being fueled by flared gas, the system exhibits a markedly lower environmental burden compared to conventional fossil-based systems reported in literature, positioning itself closer to sustainable pathways while remaining far from the high-emission profiles of petroleum and coal.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"352 ","pages":"Article 121090"},"PeriodicalIF":10.9,"publicationDate":"2026-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146036397","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}