Cryo-Compressed Hydrogen

Faster, Safer, and More Efficient:
The Future of Hydrogen Refueling

Refueling speed is key for hydrogen vehicle adoption. Gaseous hydrogen (GH2) requires high-pressure filling, a fairly slow process, while cryogenic hydrogen (LH2 and CcH2) has refueling times comparable to gasoline and diesel fueling.

For heavy-duty transport, minimizing downtime is crucial. Cryo-compressed hydrogen (CcH2) combines fast refueling with higher energy density, making it ideal for long-haul trucks, buses, and commercial vehicles. A robust refueling infrastructure is essential to unlock its full potential.

At Rheonik, we set the standard in cryogenic hydrogen measurement. Our RHM 10 mass flow meter, designed for liquid hydrogen (LH2), ensures unmatched accuracy in such extreme temperature conditions. With a flow rate of 0.2 to 9 kg/min (12 to 540 kg/h) and an operating pressure of up to 208 bar (3,016 psi), the RHM 10 operates within a temperature range of -260 to 50 °C (-463 to 122 °F). Installation in a vacuum chamber is key to ensuring optimal performance.

As the hydrogen economy grows, Rheonik flow meter technology enhances safety, efficiency, and sustainability in hydrogen transfer.

Maximizing Hydrogen Storage Efficiency: How LH2 and CcH2 Are Shaping Hydrogen Transport

The growing demand for hydrogen requires more efficient storage and transport solutions. While gaseous hydrogen (GH2) is already widely used, liquid hydrogen (LH2) and cryo-compressed hydrogen (CcH2) offer significant advantages in terms of energy density and storage efficiency.

LH2 has a significantly higher energy density than GH2. While GH2 at 700 bar and 293 K (20 °C) achieves an energy density of approximately 5 MJ/m³, LH2 (1 bar @ 20 K / -253 °C) reaches 8.5 MJ/m³. CcH2, stored at 350 bar and 35 K (-238 °C), even achieves an energy density of 9.5 MJ/m³. This higher energy density makes LH2 and, in particular, CcH2 more efficient options for storing and transporting large amounts of hydrogen.

LH2 and CcH2 are also superior in terms of storage efficiency. While GH2 at 700 bar has a density of only 42 kg/m³, LH2 allows for a significantly higher storage capacity at 71 kg/m³. CcH2 offers the highest density at 80 kg/m³, making it the most efficient option for compact hydrogen storage.

However, the use of CcH2 presents technological challenges that can only be overcome with precise measurement and control solutions. Rheonik is currently the only provider offering efficient and reliable solutions for the safe and economical handling of CcH2.

To meet the increasing hydrogen demand sustainably, optimized storage technologies are essential. LH2 and CcH2 are key steps toward an efficient hydrogen economy.