Experimental and theoretical studies on static and dynamic pressure–concentration isotherms of MmNi 5−x Al x ( x  = 0, 0.3, 0.5 and 0.8) hydrides

Metal hydrides for energy applications - classification, PCI characterisation and simulation

“…Many studies have been conducted to improve the thermodynamic, structural and kinetic properties of LaNi 5 hydrides by the partial substitution of one or more metals for either Lanthanum (La) or Nickel (Ni). Ni is typically replaced with Al, Cu, Cr, Sn, Fe, Mn, Co, Ga, Zn, etc.…”

“…On the basis of comparison presented in Figure , ref. and the observation of Paya et al . , Zhou's model was selected in the present work for simulation of PCIs because of its suitability, simplicity and ability in terms of good curve fits for all three phases ( α , α + β and β ).…”

“…Zhou's model was employed for the simulation of static PCIs by different researchers but recently, it was presented by Vinod et al . that Zhou's mathematical model can be successfully employed for the simulation of dynamic PCIs with good accuracy in fitting. In 1996, an empirical PCI equilibrium correlation was also proposed for PCI simulation, which consists of adjusting the PCI with ninth order polynomial expression .…”

Static and dynamic measurement-based thermodynamic analysis of solid sorption refrigeration system

“…Literature [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] shows the static PCI property-based experimental and theoretical studies on thermodynamic analysis of solid sorption thermal systems. But, due to the fact that the hydrogen transfer process in any thermal device is dynamic, the characterisation of metal hydride at dynamic operating condition is essential.…”

“…Small hydrogen flow rate‐based PCI measurement (dynamic) shows the trend near static PCI measurement, whereas PCIs with higher flow rates will present the actual condition of metal hydride bed during hydrogen transfer processes. In addition, the thermodynamic properties estimated from van't Hoff plot constructed by using dynamic PCI data give more accurate results for the simulation of solid sorption thermodynamic devices .…”