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RESEARCH PAPERS

Smoothed Pressure-Volume-Temperature Data for Water in the Critical Region Derived From Experimental Measurements

[+] Author and Article Information
E. S. Nowak

School of Mechanical Engineering, Purdue University, Lafayette, Ind.

R. J. Grosh, P. E. Liley

Purdue University

J. Heat Transfer 83(1), 14-26 (Feb 01, 1961) (13 pages) doi:10.1115/1.3680456 History: Received May 19, 1960

Abstract

A graphical technique was used to derive pressure-volume-temperature data from previous American, Czechoslovakian, and Russian experimental measurements. The data were derived at close intervals throughout the region encompassed by pressures from 3000 to 4000 psia, specific volumes from 0.030 to 0.120 cu ft per lb, and temperatures from 690 to 752 F. The average deviation of experimental values of pressure from the derived values was less than one part in 10,000 in the region for specific volumes greater than the critical volume (0.0525 cu ft per lb) and was less than ten parts per 10,000 in the region for specific volumes less than the critical volume. These deviations are thought to be insignificant since they are entirely within the uncertainty of recent experimental measurements [8]. In a previous paper [13], deviations of some 100 to 200 parts in 10,000 in pressure were shown to exist between the data of various steam tables. Since the data in the steam tables were derived from the same primary data used in this paper, one may conclude that these deviations greatly exceed the experimental uncertainty and must therefore be charged to previous interpolation methods and the previous paucity of data. One of the important results of this study was the establishment of the fact that there was excellent agreement between recent measurements by Kirillin, et al. [7–10], and older measurements by Keyes and Smith [5] and by Havlicek and Miskovsky [2].

Copyright © 1961 by ASME
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