Study on the Flow Condensation of Mixed Gases of FC72 and Nitrogen

The flow condensation of mixed gases, compared with pure condensable vapors, is far more complicated. Its condensation rate is influenced by the concentration of the non-condensable gas and the condensing temperature. To deal with the FC72 vapor emitted from the evaporation and condensation experiments of the cargo spaceship, a gas-vapor separator and collector is designed, and an experiment system is set up to investigate its performance. The experiment results show that, on condition that the condenser temperature is constant, the condensation rate is increasing as the concentration of FC72 increasing. As the condenser temperature is approximate -10℃, -13℃, and -15℃, and the concentration of FC72 vapor is higher than 70%, 30%, and 20%, the condensation rate can reach 80%, 70%, and 60%, respectively.