In order to improve the power of hydride Heat Pump, prototype heat pump was constructed using $Zr_{0.95}Ti_{0.05}Cr_{0.9}Fe_{1.1}-Zr_{0.9}Ti_{0.1}Cr_{0.6}Fe_{1.4}$ pair which has very good hydrogenation properties. The power change with operating parameters such as cycle time, air flow rate, and temperature of high temperature side was investigated. The power shows maximum value with cycle time. The power increased as air flow rate and temperature of high temperature side. The power of the hydride Heat Pump was 65-72Kcal/Kg-alloy.h under optimum operating condition, which was superior to that of the system using $LaNi_{4.7}Al_{0.3}-MmNi_{4.15}Al_{0.65}Fe_{0.2}$ alloy pairs.
