Unsteady 2D-mathematical model for predicting the dynamic behavior of a metal hydride water pump

In this paper, an unsteady mathematical model for evaluating the performance of a metal hydride water pump was developed, along with a computation code that was successfully validated against experimental data. A variety of pump operating conditions were simulated numerically using this code. Results show that increasing the heating fluid temperature from 313 K to 363 K, the heat transfer coefficient from 10 Wm-2K-1 to 500 Wm-2K-1, and the initial concentration of hydrogen from 0.9 to 0.98 can reduce pumping time by 93 %, 75 %, and 18 %, respectively. Additionally, it has been found that there is an optimal pumping head that provides the highest pumping efficiency for a particular heating fluid temperature. There is also an optimal initial hydrogen concentration and pumping head point that results in the best performance of the pump. CO 2023 THE AUTHOR. Published by Elsevier BV on behalf of Faculty of Engineering, Ain Shams University. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).