Mitsubishi Hitachi Power Systems (MHPS) has revealed the name for its pressurised hybrid power generation system that integrates solid oxide fuel cell (SOFC) stacks with micro gas turbines (MGT).
‘MEGAMIE’, developed for the commercial and industrial market, is a combination of ‘mega’ – evoking an image of the high-output fuel cells with stable operating performance – and ‘megami’ – a Japanese word meaning goddess of the land or beauty.
“The blended term conveys strength, elegance, and warmth,” MHPS explained. “The final ‘E’ represents the three ‘Es’ of Environment (environmental conservation), Energy security (stable supply), and Economy (economic efficiency), thereby expressing the value that MHPS provides to customers, and the role the company plays in society.”
The aim of naming the series is to increase product recognition and strengthen market penetration amid the recent global increase in environmental consciousness.
MHPS conducted demonstration tests of 250 kilowatt KW) class hybrid systems through fiscal 2016 with the support of Japan’s New Energy and Industrial Technology Development Organisation (NEDO).
Demonstration equipment was installed at four locations in Japan and stable system operations were verified.
MHPS then developed practical models for commercial and industrial applications and began marketing the system in the summer of 2017. MHPS received the first order for this system at the beginning of 2018 as a distributed power system for the Marunouchi Building in Tokyo, owned and operated by Mitsubishi Estate Co., Ltd. Installation work is currently underway, with full-scale operations scheduled to start in February of 2019.
This hybrid system uses city gas as fuel and generates electricity with both ceramic SOFC stacks that operate at a high temperature of around 900degC, and MGTs. The fuel is not burned, but rather the SOFCs generate electricity from the chemical reaction between oxygen in the air and hydrogen and carbon monoxide extracted from reformed city gas, while the MGTs generate electricity from the post-process. Used in a cogeneration system, the remaining exhaust heat can be recovered as steam or hot water, significantly increasing the combined efficiency.
Compared to conventional power generation systems, utilising this hybrid system reduces CO2 emissions by nearly half, contributing to the realisation of a low-carbon society.
MHPS will utilise the integration of this hybrid system as momentum to advance its proposal-based sales, promote wider adoption of the system, and further enhance overall contribution to developing a highly sustainable, low-carbon society.