Vapor-liquid equilibriums in the Freon 12-Freon 13 system

Abstract

carbons are surrounded by -bonding rather than s-bonding electrons which characterize saturated hydrocarbons. ConclusionThe data presented here may be useful for engineering design where higher temperatures are increasingly encountered. Further, these data contribute toward the experimental information required to construct a successful theory of gas solubility. Appendix I. Minimum Cell Volume Error AnalysisSince some high-boiling solvents are costly, it is desirable to use a small solubility cell. Therefore, it is important to determine how small the solubility cell can be made without a large increase in experimental error. Further, some gases of scientific and industrial interest, e.g., hydrogen sulfide, are extremely toxic making it advisable to use as small an amount as possible.The error in Henry's constants was calculated as a function of liquid cell volume for a typical case and for the worst case with respect to pairs of gases and high-boiling solvents. The worst case is for a very slightly soluble gas, e.g., hydrogen, in a solvent with high vapor pressure, e.g., octamethylcyclotetrasiloxane.The typical case is for the squalane-ethane system. Results are presented in Figure A1. From these results it was decided that, for expensive solvents and/or toxic solutes, we may use a new, interchangeable solubility cell with a liquid volume of between 30 and 40 cm3. The cell used in previous work has a volume of 300 cm3.

Vapor-liquid equilibrium in binary systems of chlorotrifluoromethane with n-butane and isobutane

“…Densities and vapor pressures of pure R 13 have been measured by several workers (2-6), and several reports exist for the measurement of the densities and vapor-liquid equilibrium properties for R 13 in mixed refrigerant systems, generally with R 12, R 14, and R 23 (7)(8)(9)(10)(11)(12). As far as we are aware, however, the present measurements are the first that have been reported on mixtures of R 13 with hydrocarbons at elevated temperatures and pressures.…”