Siltrax launches 2–6 kW air-cooled fuel cell system for off-grid applications
Australian hydrogen technology company Siltrax has launched the C2 Series, an air-cooled hydrogen fuel cell platform targeting unmanned aerial vehicles (UAVs), portable power systems and off-grid applications.
The company said the new fuel cell system covers power outputs from 2 kW to 6 kW, with a 3.6 kW configuration serving as a reference architecture for customer evaluation and system integration. Multiple modules can be operated in parallel to meet power requirements of up to 24 kW.
According to technical data published by Siltrax, the C2 stack measures 216 mm × 155 mm × 186 mm and weighs 3.48 kg, including its cooling fan. It has an operating temperature range of 40 C to 60 C and an ambient temperature range of -20 C to 40 C.
Siltrax lists volumetric and gravimetric power densities of 3.78 kW/l and 2.13 kW/kg, respectively, although the company notes that these figures apply to the cell block and exclude the endplates and fastening system.
The C2 uses an air-cooled architecture, with dedicated fans moving ambient air through cooling channels in the stack. According to Siltrax, this eliminates the pum...