Conveners
C2Po2B: Hydrogen II: Vessel Design & Testing
- Adam Swanger (NASA Kennedy Space Center)
- Johannes Doll (TU Dresden)
Safe, compact, lightweight, economical and efficient hydrogen storage technology is the key to the comprehensive development of hydrogen economy. Compared with other hydrogen storage methods, cryo-compressed hydrogen storage has significant advantages in terms of mass hydrogen storage density, volume hydrogen storage density, hydrogen storage cost, safety and evaporation loss. The key...
Under the general trend of energy reform and utilization of renewable energy, the key role of hydrogen energy has been becoming increasingly prominent. The IEA report highlights hydrogen as an integral part of net zero emissions, and many countries are developing strategies to incorporate hydrogen into the major energy plans. Hydrogen is an ideal efficient clean energy, which can be used in...
Determining ortho-parahydrogen compositions at cryogenic temperatures is an important quality control for liquid hydrogen custody exchange. High orthohydrogen compositions lead to an exothermic reaction resulting in increased boil-off and increased venting losses of liquid hydrogen product by either the supplier or consumer. Traditional methods for measuring ortho-parahydrogen compositions...
As a new economical, efficient and feasible high density hydrogen storage method, cryogenic compressed hydrogen has been widely concerned by scholars in recent years. Based on the existing hydrogenation stations at normal temperature and high pressure, this paper proposes a new cryogenic compressed hydrogen refueling process based on liquid nitrogen precooling, which can generate 80K and 35MPa...
Vapor cooled polymer composite tanks for liquid hydrogen are a new opportunity for light weight power-system integration into unmanned aerial vehicles. Vapor shielding has the ancillary benefit of pre-conditioning the hydrogen for use by a fuel cell. However, the mass flow rate required by a fuel cell should be matched by the natural boil-off rate of the tank. With limited ability to vary...
This study is based on a self-developed test device that achieves catalytic performance testing of Ortho-Para hydrogen catalysts in the liquid nitrogen temperature region. The hydrogen samples are pre-cooled to liquid nitrogen temperature and then flow through a packed bed converter filled with Ortho-Para hydrogen catalyst for isothermal conversion at liquid nitrogen temperature. The converted...
Achieving the targets set out in the 2015 Paris Agreement requires expanding the usage of renewable power generation globally. The cost of renewable energy is highly dependent on location and countries such as Japan are unlikely to have sufficient renewable power capacity to meet their energy demands. Exporting renewable energy in the form of liquid hydrogen is one means to achieve this....
Some applications in liquid hydrogen (LH2) research require the availability of hydrogen with a freely adjustable ortho-para ratio. Examples of this are the calibration and qualification of ortho-parahydrogen measurement systems, the establishment of defined arbitrary inlet compositions for sample reactors investigating the performance of ortho-para catalysts, and investigation on the neutron...
A 1,300 liter-capacity liquid hydrogen (LH2) storage tank has been designed and constructed. The thermal insulation system of the LH2 storage tank is designed to have a boil-off rate (BOR) of 1.5 vol.%/day and a refrigeration system is introduced to achieve zero-boil off (ZBO) of LH2. A multi-stage GM-type pulse tube refrigerator (PT815, Cryomech) is utilized...
Liquid Hydrogen (LH2) infrastructure systems are widely installed in industry where more than 200 systems convert the low pressure LH2 to high pressure gaseous hydrogen (GH2) which is stored in pressure vessels (ground storage tanks) and distributed via a high-pressure manifold as needed, to multiple fueling stations which refuel the onboard H2 tanks of the H2 vehicles (cars, buses, trucks) or...
