Publications

Publications are free to GPA Midstream and GPSA members and are accessible through the members-only Data Book and Publications Cloud. Any employee of member companies may access the cloud by visiting GPAmidstream.org/login and creating a free account using your work email address. Once you create an account, log in and click on Cloud-Based Data Book and Publications. Non-members may purchase publications and are not required to create an account to make a purchase. Non-members should use the links below to find and purchase publications of interest.

« Go Back to Research Reports 001-049

Enthalpy and Entropy of Non-Polar Liquids at Low Temperatures, April 1971


SKU:
RR-003

Abstract:
Project 681

The objective of this project was to extend the capabilities of the Curl-Pitzer correlations for predicting enthalpy and entropy to temperatures in the cryogenic region. These correlations are available in the 1966 NGPSA Engineering Data Book with lower limitations of reduced temperature of 0.5 for enthalpies and 0.8 for entropies. The lower limit for enthalpies was previously extended from 0.8 to 0.5 by Dr. Lyman Yarborough, who also has maintained close liaison with Drs. Chao and Greenkorn during the course of this project. The objectives of this project have been met by extending the Curl-Pitzer pressure correction factors to reduced temperatures of 0.35 for enthalpy and entropy. Charts incorporating these extended correction factors will appear in the ninth edition of the NGPSA Engineering Data Book. Generalized correlations of the enthalpy and entropy deviation functions for use with the Curl-Pitzer correlation have been prepared for non-polar liquids in the new low reduced temperature range extending down to Tr = 0.35. The enthalpy correlation was obtained upon differentiation of the generalized fugacity functions previously developed by the authors, and upon combining the new enthalpy function with the fugacity function. The new results are intended for supplementing the NGPSA Engineering Data Book of 1966 in the low temperature range.

Author(s):
Dr. K. C. Chao and R. A. Greenkorn - Purdue University, Lafayette, Indiana

We are sorry for the inconvenience, but this item is not available through our automated ordering system. Please call our Publications Administrator, (918) 493-3872, for assistance with ordering this particular item. Thank you.

Questions about pricing, shipping, returns, etc.?
Contact GPA Midstream for assistance: (918) 493-3872 or e-mail April Tollette.