利用 CFD 建模开发和实际反应器设计对金属氢化物热泵系统进行性能分析

IF 8.1 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy Pub Date : 2024-11-16 DOI:10.1016/j.ijhydene.2024.11.204

X.Y. Zhang, Y.T. Ge

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引用次数: 0

摘要

在具有低品位余热回收功能的脱碳热泵系统中进行氢和金属氢化物反应，为可持续能源储存和转换提供了一条前景广阔的途径。本研究以实际的金属氢化物反应器设计为基础，为使用氢气和 Zr0.9Ti0.1Cr0.6Fe1.4 和 LaNi4.25Al0.75 金属氢化物合金的热泵系统开发了二维瞬态计算流体动力学（CFD）模型。研究分析了工作温度对系统性能系数（COP）和比热功率（SHP）的影响。随后，中温散热器 (TM) 从 358.15 K 提高到 373.15 K，低温热源 (TL) 从 308.15 K 提高到 323.15 K，分别导致 COP 下降 25.57%，COP 上升 38.2%。高温热源 (TH) 的最佳值为 493.15 K，以获得最大 COP。此外，较高的热导率还能提高氢气的吸收和解吸能力。

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Performance analysis of metal hydride heat pump system with CFD modelling development and actual reactor designs

Hydrogen and metal hydride reactions in a decarbonized heat pump system with low-grade waste heat recovery offer a promising path for sustainable energy storage and conversion. Based on actual metal hydride reactor designs, this study developed a 2D transient Computational Fluid Dynamics (CFD) model for such a heat pump system working with hydrogen and a metal hydride alloy pair of Zr_0.9Ti_0.1Cr_0.6Fe_1.4 and LaNi_4.25Al_0.75. The effects of operating temperatures on the coefficient of performance (COP) and specific heat power (SHP) of the system have been presented and analyzed. Subsequently, raising the medium-temperature heat sink (T_M) from 358.15 K to 373.15 K, and low-temperature heat source (T_L) from 308.15 K to 323.15 K, results in a decrease in the COP by 25.57%, and an increase in the COP by 38.2%, respectively. An optimum value of high-temperature heat source (T_H) exists at 493.15 K for a maximum COP. In addition, the higher thermal conductivity increases the absorption and desorption capacity of hydrogen.

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来源期刊

International Journal of Hydrogen Energy 工程技术-环境科学

CiteScore

13.50

自引率

25.00%

发文量

3502

审稿时长

60 days

期刊介绍： The objective of the International Journal of Hydrogen Energy is to facilitate the exchange of new ideas, technological advancements, and research findings in the field of Hydrogen Energy among scientists and engineers worldwide. This journal showcases original research, both analytical and experimental, covering various aspects of Hydrogen Energy. These include production, storage, transmission, utilization, enabling technologies, environmental impact, economic considerations, and global perspectives on hydrogen and its carriers such as NH3, CH4, alcohols, etc. The utilization aspect encompasses various methods such as thermochemical (combustion), photochemical, electrochemical (fuel cells), and nuclear conversion of hydrogen, hydrogen isotopes, and hydrogen carriers into thermal, mechanical, and electrical energies. The applications of these energies can be found in transportation (including aerospace), industrial, commercial, and residential sectors.