Toshiba Energy Systems & Solutions Corp (Kawasaki City) announced Sept 30, 2019, that it has received an order for the "H2Rex" pure-hydrogen fuel-cell system from the government of Fukushima Prefecture.
The system will be installed in "Azuma Sports Park" in Fukushima City, Fukushima Prefecture, Japan. It will generate electricity by using hydrogen produced with a hydrogen production unit that uses renewable energy including solar power and is being constructed by Toshiba Energy Systems & Solutions, etc in Namie-machi, Fukushima Prefecture. It is scheduled to start operation in April 2020.
The H2Rex is a co-generation system that generates electricity and heat by using hydrogen as fuel. If renewable energy-derived hydrogen is used, it can generate CO2-free electricity and heat.
The operating temperature of the H2Rex is about 80°C, which is much lower than that of other fuel-cell systems. And it can start power generation about five minutes after startup. Also, its power generation efficiency can be 50% or higher. With an exhaust heat utilization efficiency of 40% or higher, its total thermal efficiency becomes higher than 90%.
The system to be installed in the Azuma Sports Park is a product with a rated output of 100kW (the largest-output product in the company's product line). By optimizing the design of the system while keeping efficiency, durability, etc, Toshiba Energy Systems & Solutions reduced weight and volume by 30% and 40%, respectively.