仿生低碳化高效太阳能驱动热化学储能反应器的设计灵感来自硅藻的卓越光合作用能力

IF 9.9 1区 工程技术 Q1 ENERGY & FUELS
Jintao Song , Yaping Fan , Ziming Cheng , Fuqiang Wang , Xuhang Shi , Jie Xu , Jingyu Zhang , Hongliang Yi , Yong Shuai , Hao Zhang
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引用次数: 0

摘要

光子是驱动太阳能热化学的能源。反应器空间中基于光子的辐射传递是一种重要的能量传递模式。然而,在直接的太阳热化学过程中,辐射场和化学场之间往往存在不匹配,这会导致超高温度梯度和高碳化率。而高温梯度和高碳化率之间存在的恶性循环会严重限制热化学效率。为了提高效率、降低温度梯度和碳化率,本文从硅藻光合作用的优越性能中得到启发,提出了一种仿生物辐射调控反应器。本文建立了蒸汽甲烷转化的多场模型,分析了孔隙尺度的能量转化过程。在数值分析中,与传统反应器相比,仿生反应器增强了前端的光前向散射和后端的光后向散射,使光吸收效率提高了 6.8%,温度梯度降低了 41.3%。在实验研究中,仿生反应器的甲烷转化率和太阳能燃料效率分别为 48.6% 和 44.0%,分别提高了 11.5% 和 10.7%。在长期运行条件下,它还表现出高效率和高稳定性。仿生反应器为工业太阳能驱动甲烷转化提供了一种新策略。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Biomimetic low carbonization efficient solar-driven thermochemical energy storage reactor design inspired by the diatoms’ superior photosynthesis capacity

Biomimetic low carbonization efficient solar-driven thermochemical energy storage reactor design inspired by the diatoms’ superior photosynthesis capacity
Photon is the energy source that drives solar thermochemistry. Photon-based radiative transfer in the reactor space is an essential mode of energy transfer. However, there often exists mismatch between the radiative and chemical fields in direct solar thermochemical processes, which can lead to ultra-high temperature gradients and high carbonization rates. While, the vicious cycle that exists between high temperature gradients and higher carbonization rates could severely limit the thermochemical efficiency. To improve the efficiency and reduce the temperature gradient and carbonization, inspired by the superior performance of diatom photosynthesis, a biomimetic radiation-regulated reactor is proposed. The paper establishes multi-field model of steam methane reforming, and analyzes the energy conversion processes at pore-scale. In numerical analyses, compared to the conventional reactor, the biomimetic reactor enhances the light forward scattering in fore-end and the backward scattering in rear-end, which increases the light absorption efficiency by 6.8% and reduces the temperature gradient by 41.3%. In experimental investigation, the methane conversion and the solar-fuel efficiency of the biomimetic reactor is 48.6% and 44.0%, which is increased by 11.5% and 10.7% respectively. It also demonstrates high efficiency and stability under long operating conditions. The biomimetic reactor provides a new strategy for industrial solar-driven methane conversion.
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来源期刊
Energy Conversion and Management
Energy Conversion and Management 工程技术-力学
CiteScore
19.00
自引率
11.50%
发文量
1304
审稿时长
17 days
期刊介绍: The journal Energy Conversion and Management provides a forum for publishing original contributions and comprehensive technical review articles of interdisciplinary and original research on all important energy topics. The topics considered include energy generation, utilization, conversion, storage, transmission, conservation, management and sustainability. These topics typically involve various types of energy such as mechanical, thermal, nuclear, chemical, electromagnetic, magnetic and electric. These energy types cover all known energy resources, including renewable resources (e.g., solar, bio, hydro, wind, geothermal and ocean energy), fossil fuels and nuclear resources.
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