| 饱和蒸气密度、焓和蒸发潜热的通用对比态推算式 |
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| 引用本文： | 陈则韶,胡芃,程文龙.饱和蒸气密度、焓和蒸发潜热的通用对比态推算式[J].工程热物理学报,2003,24(2):198-201. |
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| 作者姓名： | 陈则韶 胡芃 程文龙 |
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| 作者单位： | 中国科学技术大学热科学和能源工程系,安徽,合肥,230027 |
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| 基金项目： | 国家自然科学基金资助项目(No.59976040)，教育部博士点专项基金资助项目(No.98035825) |
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| 摘 要： | 本文提出了新的饱和蒸气密度的通用对比态推算式,并分别以标准沸点下的蒸发潜热和临界温度与标准沸点温度之差为基准,对蒸发潜热和温度无量纲化导出了工质蒸发潜热通用对比态方程,结合饱和液体焓通用对比态方程导出了饱和蒸气焓通用对比态方程,揭示出饱和蒸气焓通用对比态方程为双变量函数,除有温度变量外还包含有表示物质差异的变量。对多种物质的文献值计算比较,以上方程的总的平均绝对偏差分别为0.43％、0.87％和O.35％。
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| 关 键 词： | 饱和蒸气密度 饱和蒸气焓 蒸发潜热 对比态方程 |
| 文章编号： | 0253-231X(2003)02-0198-04 |
| 修稿时间： | 2002年11月23 |
GENERALIZED CORRESPONDING EQUATIONS OF SATURATED GAS DENSITY, ENTHALPY AND ENTHALPY OF VAPORIZATION |
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| CHEN Ze-Shao HU Peng CHENG Wen-Long.GENERALIZED CORRESPONDING EQUATIONS OF SATURATED GAS DENSITY, ENTHALPY AND ENTHALPY OF VAPORIZATION[J].Journal of Engineering Thermophysics,2003,24(2):198-201. |
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| Authors: | CHEN Ze-Shao HU Peng CHENG Wen-Long |
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| Abstract: | A new corresponding equation of saturated gas densities is developed in this paper. Enthalpy of vaporization and temperature are transformed to dimensionless parameters on the basis of the enthalpy of vaporization at normal boiling point and the temperature difference between critical temperature and normal boiling temperature respectively, and the generalized corresponding equation of enthalpy of vaporization and saturated gas enthalpy are developed in this paper. The equation of saturated gas enthalpy is a bivariate function with temperature and P which express the difference of substances. The calculated values have been checked by recommend data in references, the average absolute deviations are 0.43%, 0.87% and 0.35% respectively. |
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| Keywords: | saturated gas density saturated gas enthalpy enthalpy of vaporization corresponding equation |
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