Ventspils University of Applied Sciences · Latvia
Hydrogen,
Compressed
At the Limit
HydroQell is a dual-chamber hydraulic hydrogen compressor that removes compression heat during the stroke — approaching the thermodynamic floor for near-isothermal compression. We are opening the benchmark criteria to the people who run these machines.
Help shape the benchmark criteria — book 30 min ↗Compression heat is wasted energy. We remove it — during the stroke.
Low-pressure hydrogen fills the compression chamber. No moving metal piston contacts the gas.
A hydraulic fluid is the piston — carrying heat out of the gas as it is generated, holding the stroke near-isothermal.
Compressed hydrogen exits at 70 MPa — with far less energy spent fighting the heat of compression.
There is almost no room left below us.
IMPOSSIBLE
What the energy gap is worth.
Your station's throughput and electricity price — today's ~5 kWh/kg versus the modelled ~1.36 kWh/kg target.
Read this before quoting the numbers. The ~1.36 kWh/kg figure is a CFD-modelled target, not a measured result — laboratory validation runs through late 2026 (TRL 2→3). The ~5 kWh/kg benchmark follows Pereira et al. (2024), Energies 17, 4906. This tool estimates compression energy cost only, excluding maintenance, downtime, cooling auxiliaries and CAPEX. Actual results depend on duty cycle, tariff and utilization.
Shapes the Spec ↗
A 30-minute working call — not a sales pitch. We walk you through the modelled results, then ask where the benchmark criteria and pilot specification should sit for your duty cycle. We are defining them with industry — not for it. Early participants take an early position in licensing, co-development and consortium formation.