Renewable Energy最新文献_第6页

High-performance solid recovered fuel from food waste digestate and bamboo powder: Mechanistic insights into structural reinforcement and combustion stability 从食物残渣和竹粉中提取的高性能固体回收燃料：结构加固和燃烧稳定性的机理见解

IF 9.1 1区工程技术 Q1 ENERGY & FUELS

Renewable Energy

Pub Date : 2026-04-15 Epub Date: 2026-01-31 DOI: 10.1016/j.renene.2026.125362

Xuan-Xin Chen , Zhi-Yi He , Yun-Yan Gao , Hao Zhang , Hou-Feng Wang , Raymond Jianxiong Zeng

Food waste digestate (FD), a byproduct of anaerobic digestion, poses resource potential but also challenges due to high moisture, low calorific value, and high ash content, which limit direct incineration. This study investigated co-pelletization of FD with bamboo powder (BP), a high-calorific biomass with binding capacity, to produce stable, energy-dense fuel. FD and BP were blended at ratios from 90:10 to 50:50 and pelletized at 120 °C and 120 MPa. BP addition enhanced pellet structure, with compressive strength increased by >120% and abrasion loss dropping below 1% at FD/BP = 5:5, while storage stability improved. The higher heating value (HHV) increased by 30.3% to 13.3 MJ/kg, and thermogravimetric analysis showed synergistic effects: ignition and burnout temperatures fell to 277 °C and 542 °C, and the combustion index reached 5.07 × 10⁻⁷. Gas analysis indicated slightly higher CO₂ release but more complete CO oxidation and reduced NO emissions at higher BP levels. Ash characterization confirmed enhanced slagging resistance via higher Si/Al and lower base-to-acid ratios, yielding fusion temperatures >1300 °C. Overall, FD/BP co-pelletization converts digestate into durable, energy-rich fuel with improved combustion and slagging resistance, offering a promising route for waste valorization, subject to further pilot-scale validation and TEA/LCA evaluation.

食物垃圾作为厌氧消化的副产物，具有资源潜力，但由于其高水分、低热值和高灰分含量限制了直接焚烧，因此也面临挑战。本研究将FD与具有结合能力的高热量生物质竹粉（BP）共制球，以生产稳定的高能量密度燃料。FD和BP按90:10 ~ 50:50的比例混合，在120℃、120 MPa下成球。BP的加入增强了球团的结构，在FD/BP = 5:5时，球团的抗压强度提高了120%，磨损损失降至1%以下，同时提高了球团的储存稳定性。高热值（HHV）提高了30.3%，达到13.3 MJ/kg，热重分析显示协同效应：点火和燃尽温度分别降至277℃和542℃，燃烧指数达到5.07 × 10−7。气体分析表明，在高BP水平下，CO2释放量略高，但CO氧化更完全，NO排放减少。灰分表征证实，通过较高的硅铝比和较低的碱酸比，熔合温度达到1300℃，可以增强其抗结渣性。总的来说，FD/BP共制球将消化物转化为耐用的、富含能量的燃料，具有更好的燃烧和抗结渣性，为废物增值提供了一条有前途的途径，有待进一步的中试验证和TEA/LCA评估。

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引用次数: 0

Protonic ceramic electrolysis cells (PCECs) for a sustainable hydrogen economy: A comprehensive life cycle analysis 用于可持续氢经济的质子陶瓷电解电池（PCECs）：全面的生命周期分析

IF 9.1 1区工程技术 Q1 ENERGY & FUELS

Renewable Energy

Pub Date : 2026-04-15 Epub Date: 2026-02-03 DOI: 10.1016/j.renene.2026.125388

Zheng Li , Nan Zheng , Xi Chen , Idris Temitope Bello , Zhipeng Zhou , Yanya Liu , Mengxuan Zeng , Meng Ni

Using protonic ceramic electrolysis cells (PCECs) to generate hydrogen is one of prospective pathways to realize global energy transition. Aiming to deliver an in-depth environmental and economic description, an investigation combining life cycle and life cycle cost assessment is presented. Notably, the various environmental impacts of the produced hydrogen are monetized in this work through the environmental price method. Over 90% of the environmental costs are caused by the CO₂ and chromium emissions throughout the hydrogen production lifecycle. Electricity consumption is identified as the dominant contributor (>96%) to the CO₂ emissions. Additionally, the metallic components used in PCEC stacks, such as interconnects, contributes approximately 50% of the chromium emissions. Consequently, optimizing the PCEC stack design to minimize steel usage and increasing the percentages of renewable electricity are possible strategies to mitigate the environmental damages. Levelized cost of hydrogen (LCOH) rises by 7% to 5.2 $/kg H₂ when the environmental costs are considered. It reveals that as the scale of hydrogen production increases, the impact of environmental costs on LCOH will decrease. This work deepens the understanding of hydrogen production using PCECs and offers potential strategies to further enhance the sustainability and economic competitiveness of the produced hydrogen.

利用质子陶瓷电解电池（PCECs）生产氢气是实现全球能源转型的重要途径之一。为了提供深入的环境和经济描述，提出了一种结合生命周期和生命周期成本评估的调查。值得注意的是，生产氢气的各种环境影响在本工作中通过环境价格方法货币化。在整个制氢生命周期中，超过90%的环境成本是由二氧化碳和铬的排放造成的。电力消耗被确定为二氧化碳排放的主要贡献者（>96%）。此外，PCEC堆叠中使用的金属组件，如互连，贡献了大约50%的铬排放。因此，优化PCEC堆设计以最大限度地减少钢材的使用并增加可再生电力的百分比是减轻环境损害的可能策略。考虑到环境成本，氢气的平准化成本（LCOH）上升了7%，达到5.2美元/公斤氢气。结果表明，随着制氢规模的扩大，环境成本对LCOH的影响将减小。这项工作加深了对pcec制氢的理解，并为进一步提高生产氢气的可持续性和经济竞争力提供了潜在的策略。

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引用次数: 0

Dynamic heat extraction and development optimization of enhanced geothermal system based on forward simulation and data-driven methods-A review 基于正演模拟和数据驱动的增强型地热系统动态采热与开发优化研究综述

IF 9.1 1区工程技术 Q1 ENERGY & FUELS

Renewable Energy

Pub Date : 2026-04-15 Epub Date: 2026-02-10 DOI: 10.1016/j.renene.2026.125417

Shuxing Mu , Lianheng Zhao , Ao Zhang

Achieving efficient development of hot dry rock (HDR) facilitates the transition of the energy structure from high-carbon to low-carbon and even carbon-free, accelerates the substitution process for fossil fuels, and provides robust support for the green transformation of the global energy system. This paper provides a comprehensive overview of mechanistic models (forward simulation), data-driven models, mechanism and data-driven models, and development scheme optimization for HDR heat extraction. Within mechanistic models, we focus on elaborating the research status and development suggestions for discrete fracture network (DFN) models. Subsequently, the research status of data-driven models, as well as mechanistic and data-driven models, in the field of HDR development is thoroughly discussed. Regarding HDR development scheme optimization, a systematic evaluation is conducted from two aspects: well pattern deployment and production systems. Finally, development prospects are highlighted from three key areas: fundamental theories of HDR heat extraction, mechanism and data-driven models, and HDR development scheme optimization. This paper aims to establish a theoretical and methodological foundation for realizing the efficient exploitation of HDR geothermal resources and accelerating the intelligent transformation of geothermal development.

实现热干岩高效开发，有利于能源结构由高碳向低碳乃至无碳转型，加快化石燃料替代进程，为全球能源体系绿色转型提供有力支撑。本文对HDR热提取的机理模型（正演模拟）、数据驱动模型、机理与数据驱动模型、开发方案优化等方面进行了全面综述。在力学模型中，重点阐述了离散裂缝网络（DFN）模型的研究现状和发展建议。随后，深入讨论了数据驱动模型、机制驱动模型和数据驱动模型在HDR发展领域的研究现状。针对HDR开发方案优化，从井网部署和生产系统两个方面进行了系统评价。最后，从HDR抽热基础理论、机理与数据驱动模型、HDR发展方案优化三个重点领域对发展前景进行了展望。本文旨在为实现HDR地热资源的高效开发，加快地热开发的智能化转型奠定理论和方法基础。

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引用次数: 0

Two-stage optimal scheduling of CHP microgrid considering renewable energy correlation and risk control 考虑可再生能源关联和风险控制的热电联产微电网两阶段优化调度

IF 9.1 1区工程技术 Q1 ENERGY & FUELS

Renewable Energy

Pub Date : 2026-04-15 Epub Date: 2026-01-14 DOI: 10.1016/j.renene.2026.125299

Xiangwan Liu , Manguo Zhou , Kaiming Zhang , Rongcan Xiao , Xuejun Hu , Fan Ma

To address the temporal coupling characteristics inherent in renewable energy generation and the dispatch deviations induced by extreme risk events, this study proposes a two-stage optimal scheduling framework considering renewable energy correlation and risk control. A Clayton copula-based joint distribution model is first constructed using historical wind and solar generation data to accurately characterize their interdependence. Subsequently, stochastic renewable energy scenarios are generated via Markov Chain Monte Carlo (MCMC) sampling, followed by inverse transform sampling to obtain a representative scenario set. Building upon this, a scenario-based stochastic optimization model integrating conditional value-at-risk (CVaR) is formulated for the day-ahead scheduling stage, aiming to minimize total system costs by jointly considering operational expenditures and risk exposure. In the intra-day scheduling stage, a model predictive control (MPC) strategy is employed to dynamically adjust scheduling decisions in response to ultra-short-term forecast deviations, thereby enhancing real-time system adaptability. The proposed method is validated through comprehensive case studies, which demonstrate a reduction in total scheduling cost by 2.80 % and in risk cost by 3.30 % compared to conventional methods, while achieving a renewable utilization rate of 94.79 %. The proposed method enables operators to better balance operational efficiency and risk mitigation.

针对可再生能源发电固有的时间耦合特性和极端风险事件导致的调度偏差，提出了考虑可再生能源相关性和风险控制的两阶段最优调度框架。首先利用风电和太阳能发电的历史数据，建立了基于Clayton copula的联合分布模型，以准确表征它们的相互依赖性。随后，通过马尔可夫链蒙特卡罗（MCMC）采样生成随机可再生能源场景，再进行逆变换采样，得到具有代表性的场景集。在此基础上，针对日前调度阶段，建立了基于场景的集成条件风险值（conditional value-at-risk, CVaR）的随机优化模型，以综合考虑运营支出和风险敞口，使系统总成本最小化。在日内调度阶段，采用模型预测控制（MPC）策略，根据超短期预测偏差动态调整调度决策，增强系统的实时适应性。综合算例验证了该方法的有效性，与传统方法相比，总调度成本降低2.80%，风险成本降低3.30%，可再生能源利用率达到94.79%。所提出的方法使作业者能够更好地平衡作业效率和降低风险。

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引用次数: 0

Performance evaluation and operation strategy for off-grid solar-driven hydrogen generation systems with energy storage 离网储能太阳能制氢系统性能评价与运行策略

IF 9.1 1区工程技术 Q1 ENERGY & FUELS

Renewable Energy

Pub Date : 2026-04-15 Epub Date: 2026-02-05 DOI: 10.1016/j.renene.2026.125375

Xianyang Liu , Tianyu Zhu , Zhihao Wei , Rui Long , Zhichun Liu

Solar-driven hydrogen generation system provides a promising technical way for solar energy harvesting. Here, an off-grid solar-driven hydrogen production system with energy storage based on photovoltaic (PV), osmotic heat engines (OHE), proton exchange membrane electrolysis cell (PEMEC) and lithium-ion battery is established. An energy control strategy, incorporating a sequence operation strategy for the PEMEC array, is designed to manage power allocation and enable all-day energy management. The effects of light conditions, adsorption desalination (AD) cycle time, and minimum state of charge (SOC_min) of lithium-ion battery on the hydrogen production performance and operation stability are systematically analyzed. Under clear summer conditions, the system achieves a maximum daily hydrogen production of 3877.67 L, with PEMEC units operating at rated power for an average of 11.47 h, supported by a nocturnal OHE output of 332.97 W. Longer AD cycle times enhance daytime Gibbs free energy storage, increasing nocturnal power output and hydrogen yield, whereas shorter cycles extend PEMEC operation under fluctuating power. A lower battery SOC_min of 0.4 maximizes daily hydrogen production (3893.38 L) and rated-power operation duration (11.62 h), despite greater power deviation, compared to higher SOC_min settings which accelerate charge-discharge transitions and affect nocturnal OHE output.

太阳能制氢系统为太阳能收集提供了一条很有前途的技术途径。在此，建立了一个基于光伏（PV）、渗透热机（OHE）、质子交换膜电解电池（PEMEC）和锂离子电池的离网太阳能制氢储能系统。能源控制策略结合了PEMEC阵列的顺序操作策略，旨在管理功率分配并实现全天能源管理。系统分析了光照条件、吸附脱盐（AD）循环时间和锂离子电池最低充电状态（SOCmin）对锂离子电池产氢性能和运行稳定性的影响。在晴朗的夏季条件下，该系统的最大日制氢量为3877.67 L， PEMEC装置在额定功率下平均运行11.47小时，夜间OHE输出为332.97 W。较长的AD循环时间增强了白天的吉布斯自由能量储存，增加了夜间的功率输出和氢气产量，而较短的周期延长了PEMEC在波动功率下的运行。与加速充放电转换和影响夜间OHE输出的较高SOCmin设置相比，较低的0.4的电池SOCmin设置可以最大限度地提高日产氢量（3893.38 L）和额定功率工作时间（11.62 h），尽管功率偏差较大。

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引用次数: 0

Experimental study on energy and exergy performance of an innovative full-scale pavement integrated photovoltaic thermal system integrated with a thermal storage unit 新型全尺寸路面集成蓄热光伏热系统能量与火用性能试验研究

IF 9.1 1区工程技术 Q1 ENERGY & FUELS

Renewable Energy

Pub Date : 2026-04-15 Epub Date: 2026-02-02 DOI: 10.1016/j.renene.2026.125380

Emad Parvazeh , Hadi Farzan , Mohammad Shafiey Dehaj , Mehran Ameri

Pavement Integrated Photovoltaic Thermal (PIPVT) systems represent a novel approach that utilizes existing infrastructure to harvest electrical and thermal energy simultaneously. While prior research has primarily relied on simplified numerical models or limited laboratory testing, this study conducts a full-scale experimental campaign to provide a crucial empirical analysis of a novel PIPVT system under outdoor conditions. The system integrates a serpentine pipe network within the pavement, serving a dual purpose: actively cooling the photovoltaic (PV) cells to enhance their electrical efficiency and harvesting thermal energy from the road surface. Furthermore, the transient dynamics of an integrated thermal storage unit were monitored and analyzed in this study. An experimental setup was fabricated and tested outdoors to analyze the system's performance at two water mass flow rates: 0.05 kg/s and 0.12 kg/s.

The findings establish the water mass flow rate as a critical operational parameter. The active thermal management provided by the higher flow rate effectively reduced the peak PV cell temperature by 8 °C, resulting in a notable 16% increase in peak electrical power output. This optimization led to a superior overall daily energy efficiency of 26.79%, compared to 24.92% for the low-flow system. Exergy analysis confirmed that the system's overall exergy efficiency of 5.88% is predominantly driven by the high-quality electrical output, thereby validating the value of active PV cooling. This research provides essential real-world data, confirming the benefits of this promising technology.

路面集成光伏热（PIPVT）系统代表了一种利用现有基础设施同时收集电能和热能的新方法。虽然之前的研究主要依赖于简化的数值模型或有限的实验室测试，但本研究进行了全面的实验活动，为室外条件下的新型PIPVT系统提供了重要的实证分析。该系统在路面内集成了一个蛇形管网，具有双重目的：主动冷却光伏（PV）电池以提高其电力效率，并从路面收集热能。此外，本研究还对集成蓄热装置的瞬态动力学进行了监测和分析。在室外搭建实验装置，分析了系统在0.05 kg/s和0.12 kg/s两种水质量流速下的性能。研究结果表明，水质量流量是一个关键的操作参数。高流量提供的主动热管理有效地将PV电池的峰值温度降低了8°C，从而使峰值电力输出显著增加16%。与低流量系统的24.92%相比，这种优化导致了26.79%的卓越日总能源效率。火用分析证实，系统5.88%的总火用效率主要由高质量的电力输出驱动，从而验证了主动式光伏制冷的价值。这项研究提供了必要的真实数据，证实了这项有前途的技术的好处。

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引用次数: 0

Effect of Nb interlayer thickness on the performance of porous transport layers for proton exchange membrane water electrolyzers 铌层间厚度对质子交换膜水电解槽多孔传输层性能的影响

IF 9.1 1区工程技术 Q1 ENERGY & FUELS

Renewable Energy

Pub Date : 2026-04-15 Epub Date: 2026-02-02 DOI: 10.1016/j.renene.2026.125373

Anurag, Abhay Gupta, Samaneh Shahgaldi

Polymer electrolyte membrane water electrolyzer (PEMWE) integrated with renewable energy sources is a crucial technology for energy transition. However, the high cost of precious metal-coated porous transport layers (PTLs) is one of the limiting factors for the widespread use of PEMWE. Multi-layered coatings with cost-effective Nb as an interlayer and thin layer of precious metal (one-fourth of commercial) as a top layer could serve as a potential alternative to commercial PTL in PEMWE. This study explored the impact of different thicknesses of Nb interlayer (150, 200, 350 nm) on the electrochemical behavior of multi-layered NbPt coatings, by comparing them with two single layered Pt-coated PTLs (in-house Pt-coated PTL and commercial Pt-coated PTL) under PEMWE simulated condition. The result showed that the Ti PTLs with Nb as an interlayer (150, 200, 350 nm) performed better than the single layered in-house Pt-coated PTL. The best performing multi-layered NbPt (Nb = 350 nm, Pt = 50 nm) sample was finally compared with commercial Pt (200 nm) coated PTL in the in-situ condition of PEMWE. The multi-layered NbPt coating showed an equivalent performance (1.967 [email protected] A cm⁻²) compared to commercial Pt coating (1.958 [email protected] A cm⁻²), making Nb as a promising cost-effective interlayer for PTL coating.

与可再生能源相结合的聚合物电解质膜式水电解槽（PEMWE）是能源转换的关键技术。然而，贵金属包覆多孔传输层（PTLs）的高成本是限制PEMWE广泛应用的因素之一。多层涂层以具有成本效益的铌为中间层，贵金属薄层（商用的四分之一）为顶层，可以作为PEMWE中商用PTL的潜在替代品。本研究通过对比两种单层pt包覆PTL（内部pt包覆PTL和商业pt包覆PTL）在PEMWE模拟条件下的电化学行为，探讨了不同厚度Nb间层（150,200,350 nm）对多层NbPt涂层电化学行为的影响。结果表明，以Nb为中间层（150nm, 200nm, 350nm）的Ti PTL性能优于单层内部pt包覆的PTL。最后，在原位PEMWE条件下，将性能最佳的多层NbPt （Nb = 350 nm, Pt = 50 nm）样品与商业Pt （200 nm）涂层PTL进行了比较。多层NbPt涂层的性能（1.967 [email protected] A cm−2）与商业Pt涂层（1.958 [email protected] A cm−2）相当，使Nb成为一种具有成本效益的PTL涂层中间层。

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引用次数: 0

A novel design of two-step solar thermochemical system integrated with heat recovery for sustainable fuels production 一种新型的两步太阳能热化学系统与热回收相结合，用于可持续燃料生产

IF 9.1 1区工程技术 Q1 ENERGY & FUELS

Renewable Energy

Pub Date : 2026-04-15 Epub Date: 2026-02-02 DOI: 10.1016/j.renene.2026.125384

Xiaoxiao Dang , Linyang Wei , Xin Zhang , Wenchao Ji , Shuangcheng Sun , Zhi Yi , Guojun Li

The increasingly severe energy crisis and environmental issues urgently require a global energy transformation from fossil fuels to sustainable fuels. The two-step solar thermochemical technology provides a promising path for sustainable fuel production from H₂O and CO₂ with concentrated solar energy. However, current solar-to-fuel efficiency is still far from commercial requirements, due to two main limiting factors: (1) severe sensible heat loss due to temperature swings between reduction and oxidation steps; (2) discontinuous utilization of solar energy during solar periods caused by alternating two-step reactions. To address this issue, a novel solar thermochemical system consisting of dual solar reactors combined with heat exchange devices is proposed in this study. This design not only enables simultaneous reduction and oxidation during solar periods for uninterrupted fuel production, but also, through the application of heat exchange devices, facilitates effective recovery of sensible heat between reduction and oxidation phases and from waste high-temperature gases and solid metal oxides, thereby reducing heat losses. Results show solar-to-fuel efficiency increases by 112%–389% compared to conventional systems, and can reach 26.07% at the reduction temperature of 1993 K. Therefore, this novel design of two-step solar thermochemical system developed in this study shows potential in the production of sustainable fuels.

日益严峻的能源危机和环境问题迫切要求全球能源从化石燃料向可持续燃料转型。两步太阳能热化学技术为利用聚光太阳能从水和二氧化碳中生产可持续燃料提供了一条有前途的途径。然而，由于两个主要限制因素，目前的太阳能-燃料效率仍远未达到商业要求：(1)由于还原和氧化步骤之间的温度波动导致严重的显热损失；(2)交替两步反应引起的太阳周期内太阳能的不连续利用。为了解决这一问题，本研究提出了一种由双太阳能反应器结合换热装置组成的新型太阳能热化学系统。这种设计不仅可以在太阳能周期内同时还原和氧化，以实现不间断的燃料生产，而且通过热交换装置的应用，可以有效地回收还原和氧化阶段之间的显热，以及从废弃的高温气体和固体金属氧化物中回收显热，从而减少热损失。结果表明，与传统系统相比，太阳能-燃料效率提高了112% ~ 389%，在1993 K还原温度下可达到26.07%。因此，本研究开发的两步太阳能热化学系统的新设计在可持续燃料的生产中显示出潜力。

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引用次数: 0

Effects of torrefaction pretreatment on the physicochemical properties of biomass and subsequent pyrolysis products 焙烧预处理对生物质及后续热解产物理化性质的影响

IF 9.1 1区工程技术 Q1 ENERGY & FUELS

Renewable Energy

Pub Date : 2026-04-15 Epub Date: 2026-02-03 DOI: 10.1016/j.renene.2026.125352

Nan Xu , Zhiwei Wang , Gaofeng Chen , Zaifeng Li , Tingzhou Lei , Ashwani K. Gupta

Biomass pyrolysis is a promising pathway for renewable fuel and chemical production. Biomass's inherent high oxygen content, volatility, and low energy density impacts its efficiency. This study investigates the effects of torrefaction pretreatment on the physicochemical properties and pyrolysis product distribution of pine wood. Torrefaction was conducted at 240, 260, and 280 °C for 20, 40, and 60 min. Results showed that higher torrefaction temperatures and extended residence times synergistically improved biomass fuel characteristics. At 280 °C for 60 min, the amount of fixed carbon increased to 37.79%, HHV rose from 18.19 to 23.68 MJ/kg, and volatile matter decreased by 18.93%. Elemental analysis revealed significant reductions in hydrogen and oxygen contents, while ash content increased by 0.85% from devolatilization. Longer torrefaction durations further promoted carbonization and hydrophobicity, although their impact was less significant than that of temperature. Pyrolysis analysis using Py-GC/MS showed that the amounts of phenolic compound increased by 13.56%, while oxygenated by-products (phenolic, aldehydes and ketones) decreased by 24.42% at 280 °C. Additionally, levoglucosan yield increased by 23.93% at 260 °C, indicating improved selective formation of dehydrated sugars. The results indicated that torrefaction can effectively improve biomass properties and tailor pyrolysis products for improved performance in energy and chemical applications.

生物质热解是一种很有前途的可再生燃料和化工生产途径。生物质固有的高氧含量、易挥发性和低能量密度影响其效率。研究了松木热解前处理对松木理化性质和热解产物分布的影响。在240、260和280°C下加热20、40和60分钟。结果表明，较高的焙烧温度和延长的停留时间协同改善了生物质燃料的特性。280℃处理60 min，固定碳量增加到37.79%，HHV从18.19 MJ/kg增加到23.68 MJ/kg，挥发物减少18.93%。元素分析表明，脱挥发使氢和氧含量显著降低，而灰分含量增加了0.85%。较长的焙烧时间进一步促进了炭化和疏水性，尽管其影响不如温度的影响显著。Py-GC/MS热解分析表明，在280℃时，酚类化合物的含量增加了13.56%，而含氧副产物（酚类、醛类和酮类）的含量减少了24.42%。此外，在260℃下，左旋葡聚糖的产率提高了23.93%，表明脱水糖的选择性形成得到了改善。结果表明，焙烧可以有效地改善生物质的性质，并使热解产物具有更高的能源和化学应用性能。

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引用次数: 0

Experimental study on photovoltaic-driven active enhanced vapor injection air source heat pump with self-contained heat storage 自备蓄热光伏驱动主动增强型蒸汽喷射空气源热泵实验研究

IF 9.1 1区工程技术 Q1 ENERGY & FUELS

Renewable Energy

Pub Date : 2026-04-15 Epub Date: 2026-01-30 DOI: 10.1016/j.renene.2026.125348

Yihua Yu , Lu Liu , Qiu Tu , Xinyue Hao , Luka Boban , Vladimir Soldo

Photovoltaic-driven air source heat pumps have been widely used for buildings heating. However, in the low-temperature environment, the performance of the heat pump significantly declines. The conventional enhanced vapor injection (CEVI) can only slightly improve the performance. In this work, a photovoltaic-driven active enhanced vapor injection (AEVI) air source heat pump is designed with self-contained heat storage that can continuously provide heat for the AEVI. The experimental performance assessment of the heat pump operation with different enhanced vapor injection methods demonstrated the benefits of the AEVI. The maximum heating capacity of the heat pump with CEVI and AEVI increased by 6.9 % and 32.9 % compared to that with the none-injection (NEVI), respectively. At the same return water temperature of 33 °C, the CEVI and AEVI show 11.8 % and 57.5 % increase in heating capacity, 3 % and 24.7 % improvement in coefficient of performance compared to the NEVI. In addition, the average temperature of the indoor room was 16.8 °C, 17.3 °C and 19.2 °C after 8 h of underfloor heating. This shows that the AEVI heat pump has the best performance for underfloor heating and presents viable option for enhancing heat pump heating in low-temperature environment.

光伏空气源热泵在建筑供暖中得到了广泛的应用。然而，在低温环境下，热泵的性能明显下降。传统的增强型蒸汽喷射（CEVI）只能略微提高性能。在这项工作中，设计了一个光伏驱动的主动增强型蒸汽喷射（AEVI）空气源热泵，该热泵具有独立的储热装置，可以连续地为AEVI提供热量。通过对不同强化注汽方式热泵运行性能的实验评估，验证了AEVI的优越性。与不注入（nei）相比，注入CEVI和AEVI的热泵最大供热能力分别提高了6.9%和32.9%。在相同回水温度为33℃时，与NEVI相比，CEVI和AEVI的供热能力分别提高了11.8%和57.5%，性能系数分别提高了3%和24.7%。另外，地暖8h后室内平均温度分别为16.8℃、17.3℃和19.2℃。这表明AEVI热泵在地板下采暖方面具有最佳性能，为低温环境下加强热泵采暖提供了可行的选择。

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引用次数: 0