| 真实气体等压热容的关联 |
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| 引用本文： | 石玉冰.真实气体等压热容的关联[J].化肥设计,2010,48(3):11-13. |
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| 作者姓名： | 石玉冰 |
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| 作者单位： | 濮阳职业技术学院,石油化工与环境工程系,河南,濮阳,457000 |
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| 摘 要： | 根据热力学原理,在第二维里系数关系式、RK方程与SRK方程基础上导出了真实气体等压热容的关联式。利用这些关联式计算了包括极性气体的3种真实气体在不同压力和温度下的等压热容,并与文献上的实验数据进行了比较。计算结果表明:基于第二维里系数关系式的等压热容关联式简单方便,在p10MPa与对比体积Vr≥2的条件下,计算误差一般在3%以下;在不接近露点的条件下,基于SRK方程导出的关联式计算误差一般小于4%,基于RK方程导出的关联式对于非极性气体计算误差一般小于4%;本文关联式计算准确性优于剩余热容图法,为工程计算提供了一种便于计算机应用的计算方法。
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| 关 键 词： | 真实气体 等压热容 关联式 |
Correlation of Heat Capacity at Constant Pressure for Real Gas |
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| SHI Yu-bing.Correlation of Heat Capacity at Constant Pressure for Real Gas[J].Chemical Fertilizer Design,2010,48(3):11-13. |
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| Authors: | SHI Yu-bing |
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| Affiliation: | SHI Yu-bing(Department of Petro-chemical and Environmental Engineering,Puyang Institute of Professional Technique,Puyamg 457000 China) |
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| Abstract: | On the basis of secondary Virial coefficient relation,RK equation and SRK equation,a correlation for heat capacity at constant pressure of real gas was derived on the thermodynamics principle.The correlation was used to calculate the heat capacity for three kinds of real gas with polar gas included at different pressures and temperatures.Comparison was made between the calculating result of the correlation and literature experiment data,it indicates that the correlation based on secondary Virial coefficient... |
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| Keywords: | real gas heat capacity at constant pressure correlation |
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