高压氢气储存系统泄漏的热力学模型  

Thermodynamic models of leaks from high-pressure hydrogen storage systems

作　　者：李雪芳[1] 毕景良[1] 柯道友[1] 

机构地区：[1]清华大学热能工程系,热科学与动力工程教育部重点实验室,北京100084

出　　处：《清华大学学报（自然科学版）》2013年第4期503-508,共6页Journal of Tsinghua University(Science and Technology)

基　　金：国家"九七三"重点基础研究项目(2011CB706904)

摘　　要：高压氢气储存系统泄漏的实验设计和模拟都需要了解泄漏过程中储罐内滞止参数随时间的变化以及泄漏出口处气流的物性。针对高压氢气从储罐泄漏的问题,本文建立了2种描述整个泄漏过程中滞止参数变化及出口流量变化的热力学模型:基于理想气体状态方程的理想气体模型和基于Abel-Noble状态方程的数值计算模型。这2种模型的计算结果基本一致。由于高压下气体的行为会偏离理想气体状态方程预测的结果,实际滞止温度和滞止压力的降低速度要大于理想气体假设下的降低速度。Simulations and design of experiments for leaks from high pressure hydrogen storage systems will require knowledge of the stagnation state time histories and stream properties exiting the orifices. An analytical ideal gas model based on the ideal gas state equation and a numerical model based on the Abel-Noble state equation were developed to model the entire process of leaks from high pressurized hydrogen gas containers. The results obtained by the two methods agreed with each other well. As the gas behavior departs from the ideal gas properties at high pressures, the actual stagnation pressure and temperature decay more rapidly than with the ideal gas assumption.

关 键 词：氢气泄漏 理想气体模型 实际气体 Abel-Noble状态方程 

分 类 号：TK91[动力工程及工程热物理]