Abstract
The applicability of autonomous metal hydride actuator (A-MHA) as the equipment for seawater exchange is verified through field experiment and numerical simulation. The Mm-based alloy obtained by a laboratory test shows the performance of hydrogen desorption-absorption and the durability of alloy are improved in comparison to LaNi5 metal hydride. The pumping discharge due to A-MHA using the alloy is about 30m3/hr and the anoxic water mass near the seabed is controlled. The requirement of seawater exchange with A-MHA is analyzed by using the Lagrangian particle model. At a minimum, the discharge of A-MHA requires more than 60m3/hr.
