Document Type


Date of Award


Degree Name

Master of Science in Chemical Engineering - (M.S.)


Chemical Engineering and Chemistry

First Advisor

Edward Charles Roche, Jr.

Second Advisor

John E. McCormick


The expansion and compression of fluids is discussed in relation to the design of reciprocating compressors. As part of this thesis, the design equations for reciprocating compressors are developed for both ideal and reel gases.

The resulting design equations contain, as one of the parameters, the ratio of the specific heats. Using published componential specific heat data, a correlation was developed relating the dependence of the ratio of specific heat on temperature and pressure for the nore common gases. These correlations were developed so as to be compatible with the compressor design equation and to provide rapid evaluation of the various design equations.

As part of the analysis of the applicability of the design equations, it was demonstrated that interstage cooling is always desirable, and that real gases with compressibility factors less than unity have lower power requirements for the same pressure change than the corresponding ideal gas.



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