CFD investigation on performance enhancement of metal hydride hydrogen storage vessels using heat pipes

C. A. Chung, Yuan Zen Chen, Yu Pei Chen, Ming Shan Chang

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

To predict the hydrogen storage performance, this study presents a mathematical model for simulating the thermal-fluid behaviours in the metal hydride beds embedding heat pipes. Computational fluid dynamics (CFD) simulations were conducted using a commercial code (ANSYS Fluent) using LaNi5 as the storage media. The model was validated by comparison with previous experimental data in literature that proves the effectiveness of heat pipes to increase the heat transfer rate between the metal hydride bed and outside the storage tank. The results showed that heat pipes profoundly changed the distribution of temperature, hydrogen content and equilibrium pressures over the metal bed. The dry-out limits of the heat pipe exerted considerable effects on the tank performance. By contrast, changing the thermal conductivity of the heat pipe made little difference because the effective thermal conductivity of the metal beds was typically much smaller than that of the heat pipe. The model was then applied to compare tank designs, with and without heat pipes and internal fins, to demonstrate the effects of using heat pipes to improve the heat and mass transfer in a hydrogen storage tank.

Original languageEnglish
Pages (from-to)434-446
Number of pages13
JournalApplied Thermal Engineering
Volume91
DOIs
StatePublished - 5 Dec 2015

Keywords

  • CFD
  • Heat transfer
  • Hydrogen storage
  • Metal hydride

Fingerprint

Dive into the research topics of 'CFD investigation on performance enhancement of metal hydride hydrogen storage vessels using heat pipes'. Together they form a unique fingerprint.

Cite this