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NEWS: The First Successful Operation Test of Mixed-Fuel Combustion in Cogeneration System, Japan

03 September 2021

A Photo of Commercial Gas Engine

First Achievement Test on Mixed-Fuel Combustion of City Gas and Hydrogen


On 26 August, Toho Gas Co., Ltd. and Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. (MHIET) announced their first achievement test in Japan’s joint project. They have demonstrated mixed-fuel combustion with city gas and hydrogen using a commercial gas engine for a cogeneration system and successfully running the operations with a 35% hydrogen mixed fuel-burning ratio (by volume).


This demonstration test was conducted at Toho Gas Technical Research Institute in Tokai, Aichi Prefecture, using a GS6R2-PTK commercial gas engine rated at 540 kW from MHIET.


This testing aims to acquire knowledge to facilitate city gas and hydrogen mixed-fuel combustion for existing cogeneration systems already installed at customer sites without extensive equipment renovation. City gas and hydrogen mixed-fuel combustion typically have issues of abnormal combustion (backfiring, knocking, preignition). Still, the tests confirmed that a stable combustion state is possible by adjusting the input ratio of fuel and air and other modifications.


It’s just the beginning of the project. Toho Gas and MHIET will continue to conduct more research and further enhance the hydrogen mixed fuel-burning ratio.


If you are reading here and worrying about the high cost of the entire operation of hydrogen, perhaps mixed-fuel combustion of gas and hydrogen will be an excellent option to contributing to the advancement of hydrogen-use technologies and the realization of a hydrogen-based society.


For full news article, read from Diesel & Gas Turbine Publication Group