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Working condition metering method of cryogenic high-pressure hydrogen storage system

A metering method and technology for hydrogen storage, applied in the directions of calculation, computer-aided design, design optimization/simulation, etc., can solve the problems of metering method without cryogenic high-pressure hydrogen storage system, and achieve low-cost effects

Active Publication Date: 2019-10-25
SOUTHEAST UNIV
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Problems solved by technology

However, there is no effective measurement method for working conditions of cryogenic high-pressure hydrogen storage systems in the prior art

Method used

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  • Working condition metering method of cryogenic high-pressure hydrogen storage system
  • Working condition metering method of cryogenic high-pressure hydrogen storage system
  • Working condition metering method of cryogenic high-pressure hydrogen storage system

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Effect test

example

[0063] Model example: Yaxing YBL6818 hydrogen fuel bus

[0064] Initial temperature of the container: 60K (30-100K)

[0065] Inner container pressure: 34.5MPa (a unified pressure standard for performance testing of hydrogen storage means) about 34MPa

[0066] Inner container volume: 151L (110-160L)

[0067] It can be seen from the figure that the hydrogen storage density of the initial state container is 71.8g / L, and the hydrogen storage mass is 10.85kg, which theoretically can make an unloaded 6.6t 8-meter hydrogen-fueled passenger car have a cruising range of about 256km. The hydrogen consumption flow per unit power is 0.02118 (g / (s·kW)) hydrogen consumption per hundred kilometers is 4.24kg. The endurance time is 4.3h.

[0068] The simulation results meet the relevant technical standards of hydrogen fuel vehicles. In the case of a given vehicle example, input the initial temperature and initial pressure of the container to accurately obtain its density and mass, and analyze the consu...

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Abstract

The invention discloses a working condition metering method of a cryogenic high-pressure hydrogen storage system. The working condition metering method comprises a process of establishing a kinetic model and a process of establishing a thermodynamic model, wherein the process of establishing the kinetic model comprises the following steps: S1, determining five parameters: hydrogen consumption flowqmole, power transmission efficiency eta1 from a fuel cell to a wheel working end, power generation efficiency eta2 of the fuel cell, an excess coefficient K of hydrogen and heat release amount deltaH of the fuel cell; S2, establishing a kinetic model through a formula (1), and substituting the five parameters into the formula (1) so as to calculate the instantaneous power P < vehicle > of the vehicle at any moment; the process of establishing the thermodynamic model comprises the following steps: S3, establishing the thermodynamic model through a formula (2); and S4, calculating the hydrogentemperature and density at each moment and the pressure of a hydrogen storage inner container in the cryogenic high-pressure hydrogen storage system through a thermodynamic model. The working condition of the cryogenic high-pressure hydrogen storage system can be effectively metered.

Description

Technical field [0001] The invention relates to the field of cryogenic high-pressure hydrogen storage systems, in particular to a working condition measurement method of cryogenic high-pressure hydrogen storage systems. Background technique [0002] Hydrogen can be widely used in fuel cell power generation, nuclear fusion production, direct combustion heat generation and other fields. At present, the technical bottleneck of hydrogen energy application mainly lies in the storage and transportation of hydrogen, especially the realization of efficient, safe and long-term storage of hydrogen energy. [0003] Traditional hydrogen storage methods mainly include high-pressure gas storage, low-temperature liquid storage, and metal compound hydrogen storage. High-pressure gaseous hydrogen storage has low energy density; low-temperature liquid hydrogen storage has high cost, non-destructive storage time is limited, small-scale use is low cost-effective, and is mostly used in large-scale liqu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F2119/06G06F30/20Y02E60/32
Inventor 倪中华刘雨农严岩徐展
Owner SOUTHEAST UNIV
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