Automated High-Temperature PVT Apparatus With Data for Propane.
Automated High-Temperature PVT Apparatus With Data for Propane.
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带有丙烷数据的自动化高温 PVT 装置。
DOI：
10.6028/jres.089.021
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发表时间：
1984
影响因子：
--
通讯作者：
A. Palavra
中科院分区：
文献类型：
--
作者：
G. C. Straty;A. Palavra
描述了一种可用于从近室温到600 °C和压力到35MPa的超临界流体的PVT和压缩性测量的装置。两个独立的实验技术，获得PVT数据在很宽的范围内的状态表面。伯内特展开进行生成压缩因子（或等效密度）数据沿着表现良好的超临界等温线。然后进行一系列等容测量以扩展温度范围。分配给等容线的密度由它们与先前测量的伯内特等温线的交叉点或重量分析确定。计算机用于实验控制和数据记录。持续几天的等容测量可以常规进行，无需操作员注意。该装置已经在丙烷上测试到325 °C的温度。密度数据估计精确到± 0.1%，与其他现有数据非常一致。
An apparatus is described which can be used for PVT and compressibility measurements on supercritical fluids from near room temperature to 600 °C and pressures to 35 MPa. Two separate experimental techniques are employed to obtain PVT data over a broad range of the state surface. Burnett expansions are performed to generate compressibility factor (or equivalently density) data along a well-behaved supercritical isotherm. A series of isochoric measurements is then made to extend the temperature range. Densities assigned to the isochores are determined from their intersection with the previously measured Burnett isotherm or gravimetrically. A computer is used for experimental control and for data logging. Isochoric measurements lasting several days can be performed routinely and without operator attention. The apparatus has been tested on propane to a temperature of 325 °C. The density data, estimated accurate to ±0.1 percent, are in excellent agreement with other existing data.