耦合光热储能的小麦秸秆超临界水气化制氢系统的热力学研究

薛强坤; 许宏鹏; 贾明; 孙煜皓; 吴少华

doi:10.19912/j.0254-0096.tynxb.2023-0778

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太阳能学报 ›› 2024, Vol. 45 ›› Issue (9) : 170-178. DOI: 10.19912/j.0254-0096.tynxb.2023-0778

耦合光热储能的小麦秸秆超临界水气化制氢系统的热力学研究

薛强坤¹, 许宏鹏², 贾明¹, 孙煜皓³, 吴少华¹

作者信息 +

THERMODYNAMIC STUDY OF HYDROGEN PRODUCTION SYSTEM BY SUPERCRITICAL WATER GASIFICATION OF WHEAT STRAW COUPLED WITH PHOTOTHERMAL ENERGY STROAGE

Xue Qiangkun¹, Xu Hongpeng², Jia Ming¹, Sun Yuhao³, Wu Shaohua¹

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文章历史 +

摘要

提出一种基于太阳能驱动的小麦秸秆超临界水气化系统模型,并结合熔融盐储能系统,有效克服了太阳能的间歇性问题,为生物质制氢的碳中和路径提供了新思路。热力学分析发现热解温度和能量输入是该系统制氢产率的主要影响因素,在较高热解温度（700 ℃）和低能量输入（215.14 kW）的条件下氢气产率达到最大;通过耦合熔融盐储能,该系统实现了全天不间断高效运行,其能量效率和?效率分别达到36.3%和36%以上。

Abstract

In this paper, a system model of solar driven supercritical water gasification of wheat straw coupled with molten salt energy storage system is presented, which effectively overcomes the intermittency problem of solar energy, thus providing a new carbon neutral path for hydrogen production via biomass gasification. Thermodynamic analysis suggest that pyrolysis temperature and energy input are the main factors affecting the hydrogen yield of the system. The hydrogen yield reached the maximum under the conditions of high pyrolysis temperature （700 ℃） and low energy input （215.14 kW）. Owing to molten salt energy storage, the system could operate continuously throughout the whole day efficiently, with the energy efficiency and exergy efficiency reaching 36.3% and 36%, respectively.

导出引用

薛强坤, 许宏鹏, 贾明, 孙煜皓, 吴少华. 耦合光热储能的小麦秸秆超临界水气化制氢系统的热力学研究[J]. 太阳能学报. 2024, 45(9): 170-178 https://doi.org/10.19912/j.0254-0096.tynxb.2023-0778

Xue Qiangkun, Xu Hongpeng, Jia Ming, Sun Yuhao, Wu Shaohua. THERMODYNAMIC STUDY OF HYDROGEN PRODUCTION SYSTEM BY SUPERCRITICAL WATER GASIFICATION OF WHEAT STRAW COUPLED WITH PHOTOTHERMAL ENERGY STROAGE[J]. Acta Energiae Solaris Sinica. 2024, 45(9): 170-178 https://doi.org/10.19912/j.0254-0096.tynxb.2023-0778

中图分类号： TK519

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