Power Generation Hydrogen produced by electrolysis using renewable energy sources can be used as a means for power storage where electricity can be generated at the desired rate. Using hydrogen, micro-turbines produce clean, efficient, and low-cost electricity, providing independence and insulation from the grid. They are a type of combustion turbine, ideal for small-scale power generation. Micro-turbines can also power heating and cooling needs and can be used in conjunction with waste heat recovery.
Hydrogen Micro-turbines can deliver power from a wide variety of fuels including hydrogen and bio-gas and can be easily implemented in many applications. As well as generating electricity, micro-turbines can be linked with absorption chillers using waste heat to generate cooling. This type of central energy plant using green hydrogen and bio-gas can make for a particularly clean solution.
Power Generation A fuel cell is a device that can convert chemical potential energy into electricity. A PEM (Proton Exchange Membrane) fuel cell uses hydrogen gas and oxygen gas as fuel. The products of the reaction in the cell are water, electricity, and heat. Fuel cells can be used for backup power, power for remote locations or for infrastructure, such as a waste water treatment plant (WWTP), as well as being part of distributed power generation. An example of this is already installed at the Sir Samuel Griffith Centre – Nathan Campus, Griffith University, Brisbane using stored hydrogen energy to generate electricity. Another type of fuel cell relevant to a WWTP is a solid oxide fuel cell (SOFC) which is particularly suitable for use with biogas because carbon dioxide, water vapour, and ammonia do not need to be removed, as is the case for internal combustion (IC) biogas engines. Electrical efficiency of SOFCs can reach 50%, exceeding that of IC biogas engines, particularly in small scale applications (Wasajja et al., 2020).