Cyclic behaviors of a novel design of a metal hydride reactor encircled by cascaded phase change materials

被引：41
作者：
Alqahtani, Talal [1 ,2 ]
Bamasag, Ahmad [2 ,3 ]
Mellouli, Sofiene [4 ]
Askri, Faouzi [1 ]
Phelan, Patrick E. [2 ]
机构：
[1] King Khalid Univ, Coll Engn, Mech Engn Dept, Abha, Saudi Arabia
[2] Arizona State Univ, Sch Engn Matter Transport & Energy, Tempe, AZ 85281 USA
[3] King Abdulaziz Univ, Coll Engn, Mech Engn Dept, Jeddah, Saudi Arabia
[4] Jazan Univ, Coll Engn, Mech Engn Dept, Jazan, Saudi Arabia
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2020年 / 45卷 / 56期
关键词：
Metal hydride; Phase change material; Cascaded phase change materials; Hydrogen storage; THERMAL-ENERGY STORAGE; HYDROGEN STORAGE; NUMERICAL-SIMULATION; HEAT-EXCHANGER; MASS-TRANSFER; PERFORMANCE; ABSORPTION; OPTIMIZATION; RECOVERY; SYSTEM;
D O I：
10.1016/j.ijhydene.2020.08.280
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The integration of a phase change material (PCM) with a metal hydride (MH) reactor has received considerable attention recently. In such a system, the exothermic and endothermic processes of the MH reactor can be utilized effectively by enhancing the thermal exchange between the MH reactor and the PCM bed. In this study, a novel design that integrates the MH reactor with cascaded PCM beds is proposed. Magnesium nickel (Mg2Ni) alloy is used as the hydride reactor. Two different types of PCMs with different melting temperatures and enthalpies are arranged in series. A parametric study is carried out to identify the optimum distribution of the different PCMs. The results indicate that the proposed cascaded MH-PCM sandwich design improves the heat transfer rate which consequently shortens the time duration of the hydrogenation and dehydrogenation processes by 26% and 51%, respectively, compared to an MH-PCM sandwich design that includes only a single PCM. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：32285 / 32297
页数：13
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