Supercritical liquid hydrogen storage system

Abstract

The invention discloses a supercritical liquid hydrogen storage system. The supercritical liquid hydrogen storage system includes a hydrogen processing section for processing hydrogen into supercritical liquid hydrogen, a supercritical hydrogen storage part, and a cooling part, wherein the supercritical hydrogen storage part is provided with a tank body for storing liquid hydrogen, and a cooling cover is arranged outside the tank body; the cooling part is provided with a cooling unit used for cooling the cooling cover; the supercritical hydrogen storage part comprises an outer tank, a first heat insulation layer, a vacuum cavity, the cooling cover, a second heat insulation layer and an inner tank sequentially arranged from outside to inside; the cooling part comprises a Stirling refrigerator, a temperature sensor and the cooling unit; the Stirling refrigerator is provided with a cold head, the temperature sensor is arranged in the cooling cover, and the temperature sensor is connectedwith the Stirling refrigerator; the cooling unit comprises a first cold conduction piece, a second cold conduction piece and a pulsating heat pipe; and the first cold conduction piece is connected with the cold head, the second cold conduction piece is connected with the cooling cover, one end of the pulsating heat pipe is connected with the first cold conduction piece, and the other end of the pulsating heat pipe is connected with the second cold conduction piece for achieving cold exchange between the cold head and the cooling cover.

Description

technical field [0001] The invention belongs to the technical field of hydrogen energy storage, and in particular relates to a storage system for supercritical liquid hydrogen based on a Stirling refrigerator. Background technique [0002] With the development of society and the improvement of people's material living standards, people pay more and more attention to environmental protection issues, and an important breakthrough point to solve environmental problems is to find a clean energy source to reduce the damage to the environment. As a clean energy, hydrogen energy has the advantages of high combustion calorific value and abundant reserves. The recyclability of hydrogen is good, and water is produced after combustion, which can be used to continue to produce hydrogen. Therefore, hydrogen is an ideal choice for future energy utilization. However, the storage and transportation of hydrogen during the use of hydrogen is a huge problem in modern industrial applications....

AI Technical Summary

Problems solved by technology

The density of liquid hydrogen is as high as 70kg / m 3 , although the storage density of hydrogen energy is very high, liquid hydrogen is prone to evaporation during transportation

On the one hand, the evaporation of liquid hydrogen will increase the pressure in the tank, making the tank more dangerous, and on the other hand, it will also cause waste of liquid hydrogen

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