Numerical study on hydrogen and thermal storage performance of a sandwich reaction bed filled with metal hydride and thermochemical material |
| |
| Affiliation: | 1. School of Computer and Information, Qiannan Normal University for Nationalities, Duyun, Guizhou, 558000, China;2. Key Laboratory of Complex Systems and Intelligent Optimization of Guizhou Province, Duyun, Guizhou, 558000, China;3. Key Laboratory of Complex Systems and Intelligent Optimization of Qiannan, Guizhou 558000, China;4. Department of Industrial Engineering, College of Engineering, Prince Sattam Bin Abdulaziz University, Alkharj 16273, Saudi Arabia;5. Institute of Engineering and Technology, GLA University, Mathura, U.P., 281406, India;6. Department of Civil Engineering, College of Engineering, Cihan University-Erbil, Erbil, Iraq;7. Department of Civil Engineering, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia;8. Department of Information Technology, College of Engineering and Computer Science, Lebanese French University, Kurdistan Region, Iraq;1. Key Laboratory of Low-grade Energy Utilization Technologies and Systems of Ministry of Education, School of Energy and Power Engineering, Chongqing University;2. State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan 750021, China;1. Key Laboratory of New Materials and Facilities for Rural Renewable Energy, Ministry of Agriculture and Rural Affairs, College of Mechanical & Electrical Engineering, Henan Agricultural University, Zhengzhou, 450002, China;2. Henan International Joint Laboratory of Biomass Energy and Nanomaterials, Henan Agricultural University, Zhengzhou, 450002, China |
| |
| Abstract: | Hydrogen storage and release process of metal hydride (MH) accompany with large amount of reaction heat. The thermal management is very important to improve the comprehensive performance of hydrogen storage unit. In present paper, thermochemical material (TCM) is used to storage and release the reaction heat, and a new sandwich configuration reaction bed of MH-TCM system was proposed and its superior hydrogen and thermal storage performance were numerically validated. Firstly, the optimum TCM distribution with a volume ratio (TCM in inner layer to total) of 0.4 was derived for the sandwich bed. Then, comparisons between the sandwich reaction bed and the traditional reaction bed were performed. The results show that the sandwich MH-TCM system has faster heat transfer and reaction rate due to its larger heat transfer area and smaller thermal resistance, which results in the hydrogen storage time is shortened by 61.1%. The heat transfer in the reaction beds have significant effects on performance of MH-TCM systems. Increasing the thermal conductivity of the reaction beds can further reduce the hydrogen storage time. Moreover, improving the hydrogen inflation pressure can result in higher equilibrium temperature, which is beneficial for the enhancing heat transfer and hydrogen absorption rates. |
| |
| Keywords: | Metal hydride Thermochemical materials Hydrogen storage Heat transfer enhancement |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
