Heat Pump Cycles With Nonazeotropic Refrigerant Mixutres in Thermodynamic Diagrams.
Heat Pump Cycles With Nonazeotropic Refrigerant Mixutres
in Thermodynamic Diagrams.
ASHRAE Transactions, Vol. 90, No. 2, 1984.
heat pumps; refrigerants; mixtures; enthalpy; pressure;
temperature; thermodynamics; equations; thermodynamic
Various thermodynamic diagrams that are well known in
absorption heat pump design and distillation
techniques are introduced in this paper for
nonazeotropic halogenated hydrocarbon mixtures. As an
typical compressor heat pump cycle for refrigerant
mixtures is displayed and the cycle itself discussed
these diagrams. It is shown that virtually all the
necessary thermodynamic design information can be
obtained form the
enthalpy-composition diagram. It offers the possibility
of determining the enthalpies, pressures, temperatures,
and compositions involved by simple geometric
constructions, even when the refrigerant flow rate
certain components. Furthermore, it is shown by an
example that thermodynamic diagrams provide a basic
understanding of the
influence of refrigerant properties on the heat pump