A STUDY OF TEMPERATURE CONDITIONS IN EVAPORATORS AND CONDENSERS OF HEAT PUMP DRYERS OPERATING ON NON-AZEOTROPIC HYDROCARBON MIXTURES
The proposed design of heat pump air dryers that uses for the working agent a non-azeotropic mixture of saturated hydrocarbon composition of 40 mol. % R290 and 60 mol. % R601а, and implements the principle of counter flow heat exchanger with the temperature variable for both production and drying agents. To determine the temperature under the boiling and condensation non-azeotropic mixtures of R290 and R601а in the evaporator and condenser heat pumps formulas, which helped in constructing the "temperature-composition" diagram for the given mixture at 0.4 and 0.6 MPa pressures and different R290 concentrations in the mixture.