Optimal design of disc mini-channel metal hydride reactor with high hydrogen storage efficiency

Wang, Di; Wang, Yuqi; Wang, Feng; Zheng, Shuaishuai; Guan, Sinan; Zheng, Lan; Wu, Le; Lv, M.; Zhang, Zaoxiao

doi:10.1016/j.apenergy.2021.118389

Cited by 15 publications

(3 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The diameter of the cooling tube is reduced to produce a mini channel in the same volume, which can obtain a larger heat transfer area and ensure the amount of MH added. 104,105 Wang et al [106][107][108] proposed a radiant mini-channel MHR (Fig. 8a) with each radiant tube consisting of an axial main tube and several radial lateral branches, in which 77%, 52%, and 37% of the reaction time are saved compared to no heat exchanger, straight tubes and spiral tubes, respectively.…”

Section: Usage Of Mini Channels and Heat Pipesmentioning

confidence: 99%

Review of thermal management technology for metal hydride reaction beds

Miao

Liu

et al. 2023

Sustainable Energy Fuels

View full text Add to dashboard Cite

show abstract

Section: Usage Of Mini Channels and Heat Pipesmentioning

confidence: 99%

Review of thermal management technology for metal hydride reaction beds

Miao

Liu

et al. 2023

Sustainable Energy Fuels

View full text Add to dashboard Cite

show abstract

“…To effectively discharge or charge the reaction heat during hydrogen absorption or desorption, MH reactors are usually equipped with heat exchangers using heat transfer fluid (HTF) for thermal management [7]. Previous studies have explored the application of various heat exchangers such as straight and finned tubes [8,9], spiral tubes [10,11], and mini-channel tubes [12,13] in MH reactors. Nonetheless, highperformance heat exchangers make the reactor structure complex, and the system must be equipped with a circulating cooling and heating subsystem for the HTF, which complicates the hydrogen storage system.…”

Section: Introductionmentioning

confidence: 99%

Performance Optimization of a PCM based Array Metal Hydride Hydrogen Storage Reactor

Ye,

Zhang,

Cheng

et al. 2024

Preprint

View full text Add to dashboard Cite

Metal hydrides (MH) are promising solid hydrogen storage materials with significant reaction heat effect applied in reactors. Phase-change materials (PCM) have been used as thermal management media in the MH reactor. To further improve the performance of such reactors, this study proposed a novel PCM-based MH (MgH2) reactor with array layouts, aiming to construct a heat transfer interface with a high specific surface area. A mathematical model was developed to describe the process of heat transfer and absorption reaction. The results showed that an increase in the number of array units significantly increased the heat transfer area and enhanced the heat transfer and hydrogen absorption rate. The array reactor with seven units had a 1.8 times increase in the absorption rate compared to the traditional reactor with only one array unit.

show abstract

“…They proved that a good selection of the supply pressure and the flow rate of the heat transfer fluid is required to improve the reactor performance. Disc mini‐channel reactors without and with jacket (DMCR and DMCR‐J) were proposed by Wang et al 9 They found that DMCR and DMCR‐J permit to reduction of 80% reaction time compared to the straight tube reactor. With radial fins occupying only 4.6% of an MHR volume, Sunku and Muthukumar 10 demonstrated an improvement of the hydriding and dehydriding rates by a factor of 2.07 and 1.92, respectively, can be obtained.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of the metal hydride hydraulic pump efficiency by integrating a phase change material

Alqahtani

2022

Intl J of Energy Research

View full text Add to dashboard Cite

Summary The combination of a metal hydride (MH) with a water pump has gained significant interest recently. However, the efficiency of such a system is low, as it requires a substantial quantity of heat from an external source to initiate the desorption process. Storing the heat generated by the absorption reaction (exothermic reaction) in a phase change material (PCM) and reusing it during the dehydration reaction (endothermic reaction) is a viable method to enhance the pump's efficiency. Thus, in the present study, the mathematical modeling and numerical simulation of a new configuration of a MH pump (MHP) equipped with a latent heat exchanger were investigated. The obtained results showed that using a PCM with MHP, as energy storage material, considerably enhances the performance of the pump. For example, with a heat transfer coefficient of 50 W/m2.K, an MH's thermal conductivity of 5.32 W/m. K, a PCM's thermal conductivity of 3 W/m. K, and pumping head of 25 m, it was noted that using Ba(OH)2‐8H2O with the pump as PCM decreases the pumping time by approximately 59% and allows for 17 times increase in overall efficiency over the case without PCM.

show abstract

Optimal design of disc mini-channel metal hydride reactor with high hydrogen storage efficiency

Cited by 15 publications

References 45 publications

Review of thermal management technology for metal hydride reaction beds

Review of thermal management technology for metal hydride reaction beds

Performance Optimization of a PCM based Array Metal Hydride Hydrogen Storage Reactor

Enhancement of the metal hydride hydraulic pump efficiency by integrating a phase change material

Contact Info

Product

Resources

About