Experimental enthalpies for a mixture of 80 mole percent isobutane in isopentane. Final report

doi:10.2172/6256345

Abstract

Seven enthalpy isobars were measured for a nominal mixture of 80% isobutane/20% isopentane. These data were used to construct a phase envelope for use in the design of a turbine expander and the heat exchangers for a geothermal power plant. The dew point values for the phase envelope are difficult to establish for a mixture, particularly in the region near the critical.

Thermodynamic properties of a geothermal working fluid; 90% isobutane-10% isopentane: Final report

Gallagher, J.S. ; Linsky, D. ; Morrison, G. ; ... April 1987

We present tables of thermodynamic properties, and dew and bubble properties, of a mixture of 90 mol % isobutane and 10 mol % isopentane, a working fluid in a binary geothermal power cycle. The tables are generated by a formulation of the Helmholtz free energy, in which the mixture properties are mapped onto the known properties of pure isobutane by means of the principle of generalized corresponding states. The data base for the Helmholtz free energy formulation is new. We report data obtained in three different apparatus: critical-line and isopentane vapor pressure data obtained in a visual cell; vapor-liquid equilibriamore »« less
DOI: 10.2172/6238516

Full Text Available
FREEZING POINTS OF SOME TERNARY MIXTURES DERIVED FROM 55 MOLE PERCENT UCl$sub 3$--45 MOLE PERCENT KCl.

Thamer, B.J. January 1966
Thermodynamic properties of isobutane-isopentane mixtures from -40 to +600/sup 0/F and up to 1000 psia

Gallagher, J.S. ; Levelt Sengers, J.M.H. ; Morrison, G. ; ... July 1984

The Helmholtz function for pure isobutane from a recent correlation has been converted to a dimensionless form and a pressure-enthalpy chart based on this function has been generated by computer. A Helmholtz function for mixtures of isobutane and isopentane has been formed based upon the dimensionless isobutane Helmholtz function as the reference fluid by means of an extended corresponding-states principle. Scarce literature data for saturation properties of isopentane, and new data for its vapor pressure and for the critical line of the mixture were used. The accuracy of the surface was checked by comparing with literature enthalpy data and withmore »« less
DOI: 10.2172/7051765

Full Text Available
Experimental determinations of several thermal properties of a mixture containing 51 mole percent propane in methane

Yesavage, V.F. ; Katz, D.L. ; Powers, J.E. January 1970 - AIChE J.; (United States)
DOI: 10.1002/aic.690160528
Thermal Performance Measurements of a 100-Percent Polyester Mli System for the Superconducting Super Collider: Part 1. Instrumentation and Experimental Preparation (300-K - 80-k)

Boroski, W.N. ; Gonczy, J.D. ; Niemann, R.C. September 1989
DOI: 10.2172/1151499

Full Text Available

Title: Experimental enthalpies for a mixture of 80 mole percent isobutane in isopentane. Final report

Abstract

Citation Formats

Thermodynamic properties of a geothermal working fluid; 90% isobutane-10% isopentane: Final report

FREEZING POINTS OF SOME TERNARY MIXTURES DERIVED FROM 55 MOLE PERCENT UCl$sub 3$--45 MOLE PERCENT KCl.

Thermodynamic properties of isobutane-isopentane mixtures from -40 to +600/sup 0/F and up to 1000 psia

Experimental determinations of several thermal properties of a mixture containing 51 mole percent propane in methane

Thermal Performance Measurements of a 100-Percent Polyester Mli System for the Superconducting Super Collider: Part 1. Instrumentation and Experimental Preparation (300-K - 80-k)