Energy Conversion and Management最新文献

Geographic variability in reanalysis wind speed biases: A high-resolution bias correction approach for UK wind energy 再分析风速偏差中的地理变异性：英国风能的高分辨率偏差校正方法

IF 10.9 1区工程技术 Q1 ENERGY & FUELS

Energy Conversion and Management

Pub Date : 2026-01-17 DOI: 10.1016/j.enconman.2026.121066

Yan Wang , Simon C. Warder , Ellyess F. Benmoufok , Andrew Wynn , Oliver R.H. Buxton , Iain Staffell , Matthew D. Piggott

Reanalysis datasets have become indispensable tools for wind resource assessment and wind power simulation, offering long-term and spatially continuous wind fields across large regions. However, they inherently contain systematic wind speed biases arising from various factors, including simplified physical parameterizations, observational uncertainties, and limited spatial resolution. Among these, low spatial resolution poses a particular challenge for capturing local variability accurately. Whereas prevailing industry practice generally relies on either no bias correction or coarse, nationally uniform adjustments, we extend and thoroughly analyse a recently proposed spatially resolved, cluster-based bias correction framework. This approach is designed to better account for local heterogeneity and is applied to 319 wind farms across the United Kingdom to evaluate its effectiveness. Results show that this method reduced monthly wind power simulation errors by more than 32% compared to the uncorrected ERA5 reanalysis dataset. The method is further applied to the MERRA-2 dataset for comparative evaluation, demonstrating its effectiveness and robustness for different reanalysis products. In contrast to prior studies, which rarely quantify the influence of topography on reanalysis biases, this research presents a detailed spatial mapping of bias correction factors across the UK. The analysis reveals that for wind energy applications, ERA5 wind speed errors exhibit strong spatial variability, with the most significant underestimations in the Scottish Highlands and mountainous areas of Wales. These findings highlight the importance of explicitly accounting for geographic variability when correcting reanalysis wind speeds, and provide new insights into region-specific bias patterns relevant for high-resolution wind energy modelling.

再分析数据集已经成为风力资源评估和风力模拟不可缺少的工具，提供了大区域长期和空间连续的风场。然而，它们固有地包含由各种因素引起的系统风速偏差，包括简化的物理参数化，观测不确定性和有限的空间分辨率。其中，低空间分辨率对准确捕获局部变率提出了特别的挑战。鉴于普遍的行业实践通常依赖于没有偏差校正或粗糙的，全国统一的调整，我们扩展并彻底分析了最近提出的空间解决的，基于集群的偏差校正框架。这种方法旨在更好地考虑当地的异质性，并应用于英国319个风力发电场来评估其有效性。结果表明，与未校正的ERA5再分析数据集相比，该方法将每月风电模拟误差降低了32%以上。将该方法进一步应用于MERRA-2数据集进行对比评价，验证了其对不同再分析产品的有效性和鲁棒性。之前的研究很少量化地形对再分析偏差的影响，与此相反，本研究展示了英国各地偏差校正因子的详细空间映射。分析表明，对于风能应用，ERA5风速误差表现出很强的空间变异性，其中苏格兰高地和威尔士山区的低估最为显著。这些发现强调了在校正再分析风速时明确考虑地理变异性的重要性，并为与高分辨率风能建模相关的区域特定偏差模式提供了新的见解。

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引用次数: 0

Efficient piezoelectric energy harvester with a shared magnetic core inductor for self-powered monitoring of alternating current transmission lines 具有共享磁芯电感器的高效压电能量采集器，用于交流输电线路的自供电监测

IF 10.9 1区工程技术 Q1 ENERGY & FUELS

Energy Conversion and Management

Pub Date : 2026-01-16 DOI: 10.1016/j.enconman.2026.121075

Shanghao Gu , Weihan Xu , Guangxia Liu , Fei Wang

This paper investigates a piezoelectric energy harvester that extracts energy from alternating magnetic fields around alternating current transmission lines through magnetic coupling between the magnet at the tip of the piezoelectric cantilever and the surrounding field. Harvesting energy from the magnetic field around transmission lines provides a stable and continuously available power source for long-term autonomous monitoring, yet the output performance of conventional piezoelectric energy harvesters is often limited at low transmission line current levels. To address this limitation, a separate magnetic core is first introduced to enhance the electromagnetic force acting on the magnet, and theoretical models were developed and validated by COMSOL Multiphysics simulations. Experimental results show that the introduction of the magnetic core significantly increases the open-circuit voltage and output power. Compared with the harvester without the magnetic core, an output power improvement of 800 % is achieved, with a maximum average output power of 1.44 mW under a transmission line current of 50 A. Building on this performance enhancement, a shared magnetic core inductor is proposed by integrating the mechanical magnetic core and the circuit inductor for synchronized electric charge extraction into a single component. By enabling functional integration at both the mechanical and circuit levels, the overall output enhancement reaches 1325 % without increasing the structural size of the harvester. Finally, a self-powered sensing-transmission-recognition system is demonstrated based on the piezoelectric energy harvester with the shared magnetic core inductor, achieving reliable temperature acquisition and scenario recognition near transmission lines. These findings highlight the potential of the shared magnetic core inductor concept for efficient energy harvesting and autonomous monitoring applications.

本文研究了一种压电能量采集器，它通过压电悬臂梁尖端的磁体与周围磁场之间的磁耦合，从交流传输线周围的交变磁场中提取能量。从传输线周围的磁场中收集能量为长期的自主监测提供了稳定和连续可用的电源，然而传统的压电能量收集器的输出性能通常在低传输线电流水平下受到限制。为了解决这一限制，首先引入了一个单独的磁芯来增强作用在磁体上的电磁力，并通过COMSOL Multiphysics仿真建立了理论模型并进行了验证。实验结果表明，磁芯的引入显著提高了开路电压和输出功率。与不带磁芯的收割机相比，输出功率提高了800%，在传输线电流为50 a时，最大平均输出功率为1.44 mW。在此基础上，提出了一种共享磁芯电感器，将机械磁芯和电路电感器集成为一个组件，用于同步电荷提取。通过在机械和电路层面实现功能集成，在不增加收割机结构尺寸的情况下，总产量提高了1325%。最后，提出了一种基于共享磁芯电感的压电能量采集器的自供电传感传输识别系统，实现了输电线路附近可靠的温度采集和场景识别。这些发现突出了共享磁芯电感概念在高效能量收集和自主监测应用中的潜力。

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引用次数: 0

Numerical investigation on the impact of anisotropic properties for porous transport layer in proton exchange membrane water electrolyzers 各向异性对质子交换膜水电解槽多孔输运层影响的数值研究

IF 10.9 1区工程技术 Q1 ENERGY & FUELS

Energy Conversion and Management

Pub Date : 2026-01-16 DOI: 10.1016/j.enconman.2025.121024

Liang Liang , Jian-Wen Shi , Jingke Mo , Hongkun Wu , Zhanfeng Deng , Mengdong Chen

The anisotropic nature of the porous transport layer (PTL) significantly affects the performance of the proton exchange membrane water electrolyzer. This study develops a three-dimensional, two-phase, non-isothermal electrolyzer model that explicitly incorporates anisotropic effective properties (electrical conductivity, thermal conductivity, and permeability) of the PTL. Experimentally determined anisotropic coefficients for the anode PTL (APTL) are integrated into the model, and the accuracy of this model is validated by experimental data. A systematic comparison between anisotropic and isotropic models reveals significant discrepancies in polarization performance, thermal behavior, and mass transport characteristics under varied operating voltages, APTL thicknesses, porosities, and inlet flow velocities. The isotropic model underestimates current density by up to 3.69 % and oxygen mole fractions within the APTL by 6.45 % at 1.9 V. Compared to isotropic assumptions, the anisotropic model predicts elevated temperatures and sharper thermal gradients. Parametric analysis demonstrates that increased porosity and reduced thickness of APTL enhance reactant accessibility and product removal, lowering mass transport resistance and improving polarization performance. APTL thickness variations disproportionately affect discrepancies between isotropic and anisotropic predictions, while higher inlet flow velocities diminish the impact of PTL anisotropy on overall transport dynamics. These findings underscore the necessity of accounting for anisotropy in PTL design and modeling to optimize PEMWE efficiency and durability.

多孔传输层（PTL）的各向异性显著影响质子交换膜水电解槽的性能。本研究建立了一个三维、两相、非等温的电解槽模型，该模型明确地包含了PTL的各向异性有效特性（电导率、导热率和渗透率）。将实验确定的阳极PTL各向异性系数集成到模型中，并通过实验数据验证了该模型的准确性。各向异性和各向同性模型的系统比较表明，在不同的工作电压、APTL厚度、孔隙率和入口流速下，极化性能、热行为和质量输运特性存在显著差异。各向同性模型在1.9 V时将电流密度低估了3.69%，将APTL内的氧摩尔分数低估了6.45%。与各向同性假设相比，各向异性模型预测温度升高和更大的热梯度。参数分析表明，增加APTL的孔隙率和减小APTL的厚度可以提高反应物的可及性和产物的去除，降低传质阻力，改善极化性能。APTL厚度变化不成比例地影响各向同性和各向异性预测之间的差异，而较高的入口流速减少了PTL各向异性对总体输运动力学的影响。这些发现强调了在PTL设计和建模中考虑各向异性以优化PEMWE效率和耐久性的必要性。

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引用次数: 0

Ni/Al2O3 catalyst-assisted methane carbon cyclic reforming for sequential H2 and CO production Ni/Al2O3催化剂辅助甲烷碳循环重整制H2和CO

IF 10.9 1区工程技术 Q1 ENERGY & FUELS

Energy Conversion and Management

Pub Date : 2026-01-16 DOI: 10.1016/j.enconman.2026.121077

Shiying Yang , Fan Jiao , Xiaotong Fan , Lixinyu Mei , Xiaojing Shi , Qibin Liu

Methane carbon cyclic reforming (MCCR) represents a novel dry methane reforming (DMR) reaction, offering advantages in terms of greenhouse gas utilization and automatic product separation. This study dedicated to exploring the potential of the MCCR method for continuous and long-term production of H₂ and CO fuels. Using a self-synthesized Ni/Al₂O₃ catalyst, we elucidated at the microscopic level the advantages of directional conversion of carbon and hydrogen elements during the MCCR process, as well as its underlying mechanism. Through in-situ testing and microscopic characterization, it was confirmed that the decoupling of the MCCR reaction can suppress side reactions, and prevent excessive graphitization of carbon deposits and promote their removal by switching reaction mechanisms promptly. The long-term continuous fuel production experiment was conducted at the macroscopic level for validating these findings. The catalyst’s stability was confirmed by 2750 min of continuous TGA cycling tests, maintaining a carbon removal ratio of 99.99% after 250 cycles. This performance was further validated in a fixed-bed reactor, where an average H-C ratio of 1.13 was sustained over 40 cycles during a 20-hour long-term test. This research paves the way for the advancement of MCCR technology and complements conventional DMR methods for the production of clean fuel.

甲烷碳循环重整（mcr）是一种新型的干式甲烷重整（DMR）反应，在温室气体利用和产物自动分离方面具有优势。本研究致力于探索MCCR方法在连续和长期生产H2和CO燃料方面的潜力。利用自合成的Ni/Al2O3催化剂，从微观层面阐述了mcr过程中碳、氢元素定向转化的优势及其机理。通过原位测试和微观表征，证实了mcr反应的解耦可以抑制副反应，防止碳沉积过度石墨化，并通过及时切换反应机制促进其去除。为了验证这些发现，在宏观层面上进行了长期连续的燃料生产实验。通过2750 min的连续TGA循环试验，证实了催化剂的稳定性，经过250次循环后，催化剂的碳去除率仍保持在99.99%。在固定床反应器中进一步验证了这一性能，在20小时的长期测试中，平均H-C比为1.13，持续了40多次循环。这项研究为mcr技术的发展铺平了道路，并补充了传统DMR生产清洁燃料的方法。

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引用次数: 0

Mechanistic insights into interfacial water–gas transport for proton exchange membrane fuel cells: From microstructure to macroscale performance 质子交换膜燃料电池界面水气传输的机理：从微观结构到宏观性能

IF 10.9 1区工程技术 Q1 ENERGY & FUELS

Energy Conversion and Management

Pub Date : 2026-01-16 DOI: 10.1016/j.enconman.2026.121081

Guofu Zou , Kangjun Duan , Ke Chen , Wenshang Chen , Ben Chen

Effective water and gas management enhances proton exchange membrane fuel cell (PEMFC) performance, with interfacial studies of membrane electrode assembly (MEA) being paramount to this effort. This study employed the lattice Boltzmann method (LBM) to analyze how compression pressure and MEA interface structure influence liquid water and oxygen transport within PEMFCs. Results demonstrate that lateral liquid water diffusion occurs throughout all MEA layers. At the catalyst coated membrane (CCM) − microporous layer (MPL) interface, pore compression limits water penetration into MPL cracks through lateral diffusion. The accumulation of interfacial water is governed by the number and morphology of MPL cracks: pressure cracks exhibit poorer water collection capability than dry cracks, whereas combined cracks improve water connectivity inside the MPL. However, lateral diffusion within MPL cracks also relieves pressure, thereby impeding water breakthrough toward the gas diffusion layer (GDL) At the MPL-GDL interface, lateral diffusion is controlled by the transition layer’s contact angle and porosity—higher hydrophobicity and lower porosity suppress lateral water movement. Furthermore, oxygen transport to the catalyst layer is affected by lateral water diffusion, saturation distribution across layers, and interface geometry, while the amount of water expelled into flow channels governs the extent of CCM flooding. The established structure-performance correlation not only advances our understanding of interface design but also provides a foundation for its optimization through deep learning. The fundamental insights gained will directly inform the design of MEA, specifically to mitigate mass transport losses at high current density in PEMFC.

有效的水和气体管理可以提高质子交换膜燃料电池（PEMFC）的性能，而膜电极组装（MEA）的界面研究对这一努力至关重要。本研究采用晶格玻尔兹曼方法（LBM）分析了压缩压力和MEA界面结构对pemfc内液态水和液氧输运的影响。结果表明，横向液态水扩散发生在所有MEA层。在催化剂包覆膜(CCM) -微孔层（MPL）界面，孔隙压缩限制了水通过侧向扩散进入MPL裂缝。界面水的积累取决于MPL裂缝的数量和形态：压力裂缝的集水能力比干裂缝差，而组合裂缝则改善了MPL内部的水连通性。然而，MPL裂缝内的侧向扩散也会释放压力，从而阻碍水向气体扩散层（GDL）的突破。在MPL-GDL界面，侧向扩散受过渡层接触角和孔隙度的控制，高疏水性和低孔隙度抑制水的侧向运动。此外，氧向催化剂层的输运受横向水扩散、层间饱和度分布和界面几何形状的影响，而排入流道的水量决定了CCM泛洪的程度。所建立的结构-性能相关性不仅促进了我们对界面设计的理解，而且为通过深度学习对其进行优化提供了基础。所获得的基本见解将直接指导MEA的设计，特别是减少PEMFC在高电流密度下的质量输运损失。

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引用次数: 0

Standardized techno-economic assessment of synthetic natural gas and synthetic hydrogen natural gas production for the transport sector and gas grid 运输部门和燃气管网合成天然气和合成氢天然气生产标准化技术经济评价

IF 10.9 1区工程技术 Q1 ENERGY & FUELS

Energy Conversion and Management

Pub Date : 2026-01-16 DOI: 10.1016/j.enconman.2025.120973

Nathanael Heimann , Francisco Moser , Moritz Raab , Jens Hüttenrauch , Ralph-Uwe Dietrich

As CO₂-emission hit new records, immediate emission reductions have to be achieved, especially in the transport and industrial sector an in domestic heat. As important backbone of the industrial and private sector, the existing natural gas grid is capable of storing and transporting large amounts of energy. Admixing synthetic natural gas to the gas grid could have an immediate impact on CO₂-safings. Furthermore, admixing up to 30 % renewable H₂ to the gas grid could improve resilience, lower costs, compared to synthetic natural gas, and could have positive impacts on the use in the transport sector.

Based on rigorous process simulations in Aspen Plus® V14 a techno-economic analysis for two production processes: high temperature TREMP™ and low temperature isothermal, has been carried out. The product quality has been set to the overlap of the requirements of the gas grid and the transport sector. Furthermore, three different higher hydrogen concentrations have been assessed. The TREMP™ process has a power-to-fuel-efficiency of about 57 % compared to 55 % for the isothermal process, resulting in net production costs in 2018 of 185 €₂₀₁₈ MWh_LHV^-1 for TREMP™ versus 189 €₂₀₁₈ MWh_LHV^-1 for isothermal. An increase from 2 % to 30 % mol H₂ reduces the NPC by about 2.6 % for TREMP™ and 2.7 % for the isothermal process in comparison to synthetic natural gas. Technical constraints and costs within the gas grid suggest a sweet spot of hydrogen admixture of up to 20 % vol. H₂.

随着二氧化碳排放量创下新纪录，必须立即实现减排，特别是在运输和工业部门以及家庭供暖方面。作为工业和私营部门的重要支柱，现有的天然气电网能够储存和运输大量能源。将合成天然气掺入天然气网可以立即对二氧化碳的减少产生影响。此外，与合成天然气相比，将高达30%的可再生氢气混合到天然气电网中可以提高弹性，降低成本，并可能对运输部门的使用产生积极影响。基于Aspen Plus®V14严格的工艺模拟，对高温TREMP™和低温等温两种生产工艺进行了技术经济分析。产品质量已设定为天然气电网和运输部门的重叠要求。此外，还评估了三种不同的较高氢浓度。TREMP™工艺的功率-燃油效率约为57%，而等温工艺为55%，因此2018年TREMP™的净生产成本为185欧元（2018 MWhLHV-1），而等温工艺的净生产成本为189欧元（2018 MWhLHV-1）。与合成天然气相比，从2% mol H2增加到30% mol H2可使TREMP™的NPC降低约2.6%，等温过程的NPC降低约2.7%。天然气电网的技术限制和成本表明，氢气混合物的最佳掺量为20%。

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引用次数: 0

Performance analysis of a hybrid energy system under weather variability using probability-based multi-objective optimization 基于概率多目标优化的天气变化条件下混合能源系统性能分析

IF 10.9 1区工程技术 Q1 ENERGY & FUELS

Energy Conversion and Management

Pub Date : 2026-01-15 DOI: 10.1016/j.enconman.2026.121056

Hyeon Seop Shin , Jin Seo Kim , Tong Seop Kim

This study presents a probability-based multi-objective optimization framework for a hybrid distributed energy system that integrates photovoltaic generation, wind turbine generation, phosphoric acid fuel cells, gas turbine combined cycle units, and battery energy storage. The framework simultaneously minimizes the daily operating cost per unit of electricity generated and the electricity purchase rate while accounting for renewable resource variability through seasonal and cloud-cover-based probability scenarios. Unlike previous deterministic approaches, this study combines combined probabilistic modeling with Shapley additive explanation analysis to quantify the influence of the major design variables and enhance the interpretability of optimization results. Sensitivity analysis revealed that the photovoltaic and wind power capacities were the most influential variables for both objectives, highlighting a clear cost–reliability trade-off between investment expansion and grid dependence. Comparative analysis of the annual, seasonal, and probabilistic seasonal scenarios showed that as the weather variability increased, the operating cost and the electricity purchase rate rose, indicating that higher resource uncertainty leads to overall performance degradation. The probabilistic seasonal configuration, validated through this sequential case structure—(i) annual, (ii) seasonal, and (iii) probabilistic seasonal based on the cloud-cover probability—provided a realistic but computationally feasible framework for system design. The integration of probabilistic modeling with Shapley-based analysis improves the interpretability of the optimization outcomes and provides a practical basis for determining the renewable capacities under variable weather conditions.

针对光伏发电、风力发电、磷酸燃料电池、燃气轮机联合循环机组和电池储能系统，提出了基于概率的混合分布式能源系统多目标优化框架。该框架同时最大限度地减少每单位发电量的日常运营成本和购电率，同时考虑到季节性和基于云覆盖的概率情景的可再生资源变化。与以往的确定性方法不同，本研究将组合概率建模与Shapley加性解释分析相结合，量化了主要设计变量的影响，增强了优化结果的可解释性。敏感性分析显示，光伏发电和风力发电容量是对这两个目标影响最大的变量，突出了投资扩张与电网依赖之间明显的成本可靠性权衡。对年度、季节和概率季节情景的对比分析表明，随着天气变异性的增加，运行成本和购电率上升，表明资源不确定性的增加导致整体性能下降。概率季节配置，通过这个顺序的案例结构验证——(i)年度，（ii）季节性，（iii）基于云覆盖概率的概率季节性——为系统设计提供了一个现实但计算上可行的框架。概率建模与基于shapley的分析相结合，提高了优化结果的可解释性，为确定可变天气条件下的可再生能源容量提供了实践依据。

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引用次数: 0

Enhanced performance of floor heating with a multi-stage cascade latent heat storage system: an experimental study 多级梯级潜热储热系统增强地板采暖性能的实验研究

IF 10.9 1区工程技术 Q1 ENERGY & FUELS

Energy Conversion and Management

Pub Date : 2026-01-15 DOI: 10.1016/j.enconman.2026.121073

Tianyu Wang , Haichao Wang , Tianchen Hou , Risto Lahdelma , Wentao Wu

To address the high energy consumption and operating costs of floor heating systems, this study adopted a system-level approach by incorporating phase change materials (PCMs) into various components – the heating terminal (phase change floor, PCF), the energy storage equipment (phase change water tank, PCWT), and the heat transfer fluid (microencapsulated phase change slurry, MPCS) – to engineer a three-stage latent heat storage system (HSS). A comparative experimental analysis was conducted among conventional sensible (without PCMs), conventional latent (PCF/PCWT), two-stage cascade (PCF + PCWT), and three-stage cascade (PCF + PCWT + MPCS) HSSs, followed by an investigation into the impact of heating methods on the three-stage cascade HSS’s performance. Experimental results demonstrate that both two-stage and three-stage cascade HSSs significantly outperform conventional sensible and latent HSSs, extending thermal comfort times by up to 6 h while achieving approximately 20% energy savings. Meanwhile, the introduction of MPCS improves the heat transfer performance of the heat transfer fluid. Compared to the two-stage cascade HSS, three-stage cascade HSS provides enhanced energy saving and better economic performance, with operating costs below 1 ¥/day. Additionally, altering the heating method can further enhance the heating efficiency of the three-stage cascade HSS. After replenishing and storing heat, the system’s thermal comfort time reaches 25 h, with daily average electricity consumption and operating cost both reduced to under 1.6 kWh/day and 0.65 ¥/day, respectively. The payback period can be further shortened. Implementing the three-stage cascade HSS across multiple components with an appropriate heating method represents an effective strategy for enhancing the floor heating system’s performance.

为了解决地板采暖系统的高能耗和运行成本问题，本研究采用系统级方法，将相变材料（PCMs）整合到加热终端（相变地板，PCF）、储能设备（相变水箱，PCWT）和传热流体（微囊化相变浆液，MPCS）中，设计了三级潜热储存系统（HSS）。对比实验分析了常规感（无PCMs）、常规潜（PCF/PCWT）、两级级（PCF + PCWT）和三级级（PCF + PCWT + MPCS） HSS，并研究了加热方式对三级级HSS性能的影响。实验结果表明，两级和三级级串联hss都明显优于传统的敏感hss和潜在hss，将热舒适时间延长了6小时，同时实现了约20%的节能。同时，MPCS的引入提高了换热流体的传热性能。与两级梯级HSS相比，三级梯级HSS节能效果更好，经济效益更好，运行成本在1元/天以下。另外，改变加热方式可以进一步提高三级叶栅高强度钢的加热效率。补热蓄热后，系统热舒适时间达到25 h，日均用电量低于1.6 kWh/天，日均运行成本低于0.65元/天。投资回收期可以进一步缩短。采用合适的采暖方法，在多个组件之间实施三级级联HSS是提高地板采暖系统性能的有效策略。

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引用次数: 0

Comparative experimental study on integrated radiative and evaporative cooling: Performance and economic benefits 辐射冷却与蒸发冷却一体化的对比实验研究：性能与经济效益

IF 10.9 1区工程技术 Q1 ENERGY & FUELS

Energy Conversion and Management

Pub Date : 2026-01-15 DOI: 10.1016/j.enconman.2026.121062

Fenggang Wang , Jiwei Guo , Yanfang Liu , Wenke Zheng , Yiqiang Jiang , Cheng Sun

The integration of radiative sky cooling and evaporative cooling presents a promising approach for building energy conservation, yet effectively coupling these mechanisms to achieve high cooling power density remains challenging. The novelty of this work lies in proposing a hybrid cooling system with a novel system layout, which achieves synergistic integration of radiative and evaporative processes. Herein, this study proposes and compares two hybrid radiative evaporative cooling configurations: the direct-above radiative cooling spray evaporative device (RCSE-DA) and the side-level radiative cooling spray evaporative device (RCSE-SL). Experimental results demonstrate that the RCSE-DA configuration achieves significantly higher cooling power density, exceeding RCSE-SL by 144.83% during daytime and 128.43% at night, attributed to a structural additional cooling power of RCSE-DA. Increasing the circulating flow rate from 0.5 to 2.5 L/min enhanced the total cooling power, with RCSE-DA reaching a notable daytime cooling power density of 668.99

W / m^{2}

at the maximum flow rate. Benefit from the shading effect of the radiative panel, RCSE-DA also exhibited more stable performance under varying spray flow rates and solar irradiation conditions, with a low evaporation water ratio. Economic analysis revealed a shorter dynamic payback period for RCSE-DA (4.30 years) compared to RCSE-SL (5.30 years) under a 120

m^{2}

installation scenario in data center. This study confirms the significant energy-saving potential and economic benefits of the RCSE system, providing theoretical support for promoting radiative cooling technology in building applications.

天空辐射冷却与蒸发冷却的结合是一种很有前景的建筑节能方法，但有效地将这两种机制结合起来以实现高冷却功率密度仍然是一个挑战。这项工作的新颖之处在于提出了一种具有新颖系统布局的混合冷却系统，该系统实现了辐射过程和蒸发过程的协同集成。为此，本研究提出并比较了两种混合辐射蒸发冷却配置：直接上置辐射冷却喷雾蒸发装置（rse - da）和侧置辐射冷却喷雾蒸发装置（rse - sl）。实验结果表明，由于rse - da的结构附加冷却功率，rse - da的冷却功率密度在白天比rse - sl高144.83%，在夜间比rse - sl高128.43%。当循环流量由0.5 L/min增加到2.5 L/min时，总冷却功率增强，最大流量下rse - da白天的冷却功率密度达到668.99 W/m2。由于辐射板的遮阳作用，rse - da在不同的喷雾流量和太阳照射条件下表现出更稳定的性能，蒸发水比较低。经济分析显示，在数据中心120平方米的安装场景下，rse - da的动态投资回收期（4.30年）比rse - sl（5.30年）更短。本研究证实了辐射冷却系统显著的节能潜力和经济效益，为推广辐射冷却技术在建筑中的应用提供了理论支持。

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引用次数: 0

Assessing wind dynamics and turbine power at Princess Elisabeth station, Antarctica, using Doppler wind LiDAR and vertical array anemometers 利用多普勒风激光雷达和垂直阵列风速计，评估南极洲伊丽莎白公主站的风力动力学和涡轮机功率

IF 10.9 1区工程技术 Q1 ENERGY & FUELS

Energy Conversion and Management

Pub Date : 2026-01-15 DOI: 10.1016/j.enconman.2026.121074

Brandon J.A. van Schaik , Michael Lehning , Hendrik Huwald

This study introduces a novel methodology to assess wind turbine energy production at the Princess Elisabeth Antarctica (PEA) station. The objective is to improve bias correction of reanalysis wind data by combining in situ measurements, ERA5(-Land) reanalysis, and a new statistical approach. Traditional Quantile Mapping (QM) requires overlapping observation–reanalysis periods, limiting its scope. The proposed Parameterized Quantile Mapping (PQM) applies an exponential mapping to the CDF relationship between observed and ERA5(-Land) data, enabling consistent bias correction beyond the calibration period. This two-parameter, physically-informed method produces realistic wind speed time series in data-scarce regions. Applied to ERA5-Land, PQM improves hub-height wind and power estimates, reducing annual wind energy production error at PEA to 12%, and strengthening confidence in wind energy assessments across Antarctica.

本研究介绍了一种新的方法来评估伊丽莎白公主南极洲站（PEA）的风力涡轮机发电量。目的是通过结合现场测量、ERA5（-Land）再分析和一种新的统计方法，提高再分析风数据的偏差校正。传统的分位数映射（QM）需要重叠的观测-再分析周期，限制了它的范围。提出的参数化分位数映射（PQM）将指数映射应用于观测数据和ERA5（-Land）数据之间的CDF关系，从而在校准周期之外实现一致的偏差校正。这种双参数、物理信息的方法在数据稀缺的地区产生了真实的风速时间序列。应用于ERA5-Land， PQM改善了枢纽高度的风力和功率估算，将PEA的年风能生产误差降低到12%，并增强了对整个南极洲风能评估的信心。

引用次数: 0