APPLICATION OF NONLINEAR-REGRESSION IN THE DEVELOPMENT OF A WIDE-RANGE FORMULATION FOR HCFC-22

被引：53
|
作者：
KAMEI, A [1 ]
BEYERLEIN, SW [1 ]
JACOBSEN, RT [1 ]
机构：
[1] UNIV IDAHO,CTR APPL THERMODYNAM STUDIES,MOSCOW,ID 83844
来源：
INTERNATIONAL JOURNAL OF THERMOPHYSICS | 1995年 / 16卷 / 05期
关键词：
CHLORODIFLUOROMETHANE; EQUATION OF STATE; HCFC-22; NONLINEAR FITTING; THERMODYNAMIC PROPERTIES;
D O I：
10.1007/BF02081283
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
An equation of state has been developed for HCFC-22 for temperatures from the triple point (115.73 K) to 550 K, at pressures up to 60 MPa. Based on comparisons between experimental data and calculated properties, the accuracy of the wide-range equation of state is +/- 0.1% in density, +/- 0.3% in speed of sound, and +/- 1.0% in isobaric heat capacity, except in the critical region. Nonlinear fitting techniques were used to fit a liquid equation of state based on P-rho-T, speed of sound, and isobaric heat capacity data. Properties calculated from the liquid equation of state were then used to expand the range of validity of the wide range equation of state for HCFC-22.
引用
收藏
页码：1155 / 1164
页数：10
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