Abstract
Equilibrium P- T- C relationships should be considered as a first approximation only, in processes where large hydrogen flows are involved. On non-zero hydrogen flow, a prevailing pressure P dyn can be defined as a function of the hydride temperature provided that an average single temperature of the hydride bed can be defined. For powder hydride beds, the temperature differential ΔT within the bed is large and P dyn may not be related to any specific temperature. However, for porous metallic-matrix hydride (PMH) compacts, a mean temperature of T ± ΔT can be determined for restricted hydrogen flow rates, allowing for a relatively small ΔT, e.g. ΔT ⩽ ± 0.5 ° C. Dynamic P dyn - T- C characteristics upon desorption were determined for PMH compacted hydride beds, with constant hydrogen flow rates below a certain limiting flow rate, Φ lim . In this range of flow rates, a linear relationship between In P dyn and the reciprocal temperature of the hydride bed was derived and a heat of reaction for the dynamic process was calculated.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
