Simulation modeling method for discharge process of cryogenic high-pressure hydrogen storage container
A hydrogen storage container and process simulation technology, applied in design optimization/simulation, complex mathematical operations, special data processing applications, etc., can solve problems such as high cost, harsh working conditions of cryogenic and high-pressure hydrogen, and difficulty in ensuring safety
Active Publication Date: 2020-10-27
SOUTHEAST UNIV
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Problems solved by technology
[0003] Due to the harsh working conditions of cryogenic and high-pressure hydrogen, the experiment is carried out with the current low technical maturity. On the one hand, the cost is high, and on the other hand, safety is difficult to guarantee.
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[0036] Such as figure 1 As shown, a simulation modeling method for the discharge process of a cryogenic high-pressure hydrogen storage container includes the following steps:
[0037] Step 1: Establish the physical model of the cryogenic high-pressure vessel, mainly including volume, thermophysical properties of the inner tank, total storage capacity, initial pressure, initial temperature, etc.;
[0038] The cryogenic high-pressure hydrogen storage hydrogen supply system for fuel cell heavy-duty trucks can be equipped with a large-capacity hydrogen storage tank, so the storage tank is set to 1000L, storing 70kg cryogenic high-pressure hydrogen, with an initial pressure of 35Mpa and an initial temperature of 63K. Based on the Debye model to predict the thermophysical properties of the inner tank under low temperature conditions:
[0039] m s C s =10 3 ~10 4
[0040] where m s is the mass of the inner tank, C s is the specific heat capacity of the inner tank.
[0041] S...
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The invention discloses a simulation modeling method for a discharge process of a cryogenic high-pressure hydrogen storage container. The invention discloses a simulation model for describing the discharge process of a cryogenic high-pressure hydrogen storage container. A thermodynamic principle and a numerical simulation mode are adopted; influence factors such as a tank body, an initial workingcondition, a discharge flow, heating / heat leakage power and the like are fully considered; physical state conversion and mass pressure intensity change of hydrogen in the container in the whole process of discharging are disclosed; a basis is provided for designing a thermal management strategy suitable for the vehicle-mounted cryogenic high-pressure hydrogen storage system, a comprehensive innovative thought is provided for the cryogenic high-pressure hydrogen storage and supply system in the aspects of simulation model establishment, analysis, optimization and the like, and therefore development of the safe, efficient and stable cryogenic high-pressure hydrogen supply system is promoted.
Description
technical field [0001] The invention relates to the field of cryogenic and high-pressure hydrogen storage, in particular to a simulation modeling method for the discharge process of a cryogenic and high-pressure hydrogen storage container. Background technique [0002] At present, on-board hydrogen storage mainly adopts physical methods to store hydrogen, including: high-pressure gas hydrogen storage, low-temperature liquid hydrogen storage and cryogenic high-pressure hydrogen storage. Cryogenic high-pressure hydrogen storage technology is considered to be the most suitable vehicle-mounted hydrogen storage and transportation method in the future due to its advantages of high energy storage density and long dormancy period. Fully understanding the venting process of cryogenic and high-pressure hydrogen storage tanks is a key and important research topic for applying cryogenic and high-pressure hydrogen technology to real life. [0003] Due to the harsh working conditions of ...
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Login to View More IPC IPC(8): G06F30/20G06F17/13
CPCG06F30/20G06F17/13Y02E60/32
Inventor倪中华严岩徐展吴越魏蔚王朝
OwnerSOUTHEAST UNIV