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| 超临界CO2热力学性质的理论计算 | |
| 引用本文： | 薛卫东,朱正和,邹乐西,张广丰.超临界CO2热力学性质的理论计算[J].原子与分子物理学报,2004,21(2):295-300. |
| 作者姓名： | 薛卫东 朱正和 邹乐西 张广丰 |
| 作者单位： | 1. 四川师范大学化学系,成都,610066 2. 四川大学原子与分子物理研究所,成都,610065 3. 中国工程物理研究院,绵阳,621900 |
| 基金项目： | 国家自然科学基金资助项目(10076010) |
| 摘 要： | 应用BWR方程在温度为310～600 K、压强为75～300 bar范围内拟合的超临界CO2流体状态方程,计算了超临界状态下CO2体系的熵、热容和焓.研究表明,这些热力学函数具有明显的超临界特性;与文献值相比,超临界状态下CO2熵的相对误差小于0 .4%,而定压热容的相对误差稍大,为2.45%(T:330～360 K),其数据为进一步从理论上研究超临界CO2与金属铀表面反应的热力学行为奠定了基础. |
| 关 键 词： | 超临界二氧化碳 热力学性质 BWR方程 |
| 文章编号： | 1000-0364(2004)02-0295-06 |
| 收稿时间： | 9/1/2003 12:00:00 AM |
Theoretic calculation on thermodynamic character for SCF CO2 |
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| XUE Wei-dong,ZHU Zheng-he,ZOU Le-xi,ZHANG Guang-feng.Theoretic calculation on thermodynamic character for SCF CO2[J].Journal of Atomic and Molecular Physics,2004,21(2):295-300. | |
| Authors: | XUE Wei-dong ZHU Zheng-he ZOU Le-xi ZHANG Guang-feng |
| Institution: | XUE Wei-dong~1,ZHU Zheng-he~2,ZOU Le-xi~3,ZHANG Guang-feng~3 |
| Abstract: | The entropy, thermal capacity and enthalpy under supercritical fluid were calculated by means of the supercritical fluid CO2 state equation refined with BWR equation at 310～600 K and 75～300 bar. It was demonstrated that these thermodynamics functions have obvious supercritical fluid character, In comparison with literature results, the relative error of the entropy was lower than 0.4%, but relative error of the thermal capacity was 2.45%(T:330～360 K), and moreover these results contributed to the theoretical research of the surface reactions between supercritical fluid CO_2 and metal uranium. |
| Keywords: | SCF CO_2 Thermodynamics computation BWR equation |
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