Conveners
Wed-Or11: Application H2 and LNG 1
- Yonghua Huang
The demand for small quantities of liquid hydrogen available at any time for testing of equipment and technologies for liquid hydrogen applications is growing. Therefore, several initiatives have started to develop a small-scale hydrogen liquefier with a liquefaction capacity in the range of 1 to 10 kg/day. The EHLAS (Economic Hydrogen Liquefaction And Storage) project is one of them and aims...
Based on its expertise in cryogenics and on its experience with more than 50 cryostats in operation, ABSOLUT SYSTEM has developed an industrial liquefier system of hydrogen, for applications up to 50kg of liquid hydrogen per day. The liquefier uses Cryomech cold heads, a well-known technology at Absolut System, which is a distributor of this hardware and which ensures its maintenance.
The...
As the hydrogen mobility market has grown in recent years, liquid hydrogen fueling stations, which are capable of delivering higher amounts of hydrogen than gaseous hydrogen fueling stations, have attracted increasing attention. Liquid hydrogen fueling stations include evaporation systems that convert liquid hydrogen into gas and heat it up to the right temperature. For normal operation, the...
Thermal stratification is of major concern in the design of cryogenic liquid storage vessels. In closed (isochoric) storage systems, a developing thermal stratification leads to higher pressure increase rates compared with isothermal conditions and therefore to premature boil-off losses. The development of a thermal stratification is a consequence of non-uniform distribution of the heat inleak...
An excellent insulation performance can promote the development of liquid hydrogen (LH2) due to its characteristics of easy evaporation. To improve the storage efficiency of LH2 and further enhance the performance of multilayer insulation structure (MLI), an experimental setup has been designed and fabricated based on the evaporation calorimetry to test the performance of MLIs. Thermodynamic...
A key challenge of designing cryogenic hydrogen fuel systems for future zero emission mobility is the reduction of the overall system weight by using lightweight engineering. Especially in the context of aviation, fibre reinforced thermoplastic composite materials (FRT) are considered as alternative construction materials for fuel line systems. However, permeation of hydrogen through FRT is...
Abstract
The post-harvest losses of agricultural produce in India are as high as 40% compared to about 2 % in the UK. Fresh perishable crops contain 65 to 95 % water when harvested and are at risk of spoilage due to microbial activity, water loss, and higher respiration and sprouting under ambient conditions for a long time. Hence there is a need to preserve agricultural produce by...
Porous thermal insulation materials, such as polyurethane foam, glass wool or glass fiber, have been widely used in the field of cryogenic storage and transportation systems. In situations where cracks or holes occur in the package wall layer, the stored cryogenic liquid will leak and penetrate into the porous media. The liquid evaporates and diffuses in the porous media and absorbs a large...
