Recent development of hydride energy systems in Japan

Thermal energy conversion systems such as steam-generation plants, chilled water production plants, industrial air-conditioning and heating systems, and solar-assisted heat pumps for residential use have been developing in Japan since 1977. Most applications have been aimed at the utilization of industrial waste heat and low-temperature thermal energy sources which would otherwise be unavailable through conventional technologies. This paper will describe the present status of the Japanese developments of the metal-hydride energy conversion systems. Metal hydride reactions applied for cyclic uses will also be correlated in connection with various hydride properties, operating modes, and cost-effectiveness standpoints.