Graph with enthalpy on the x-axis and pressure on the y-axis showing an imaginary saturated curve, super-heated gas, super-cooled liquid as they move through the system.

Figure 4-7. Pressure-enthalpy graph for a typical refrigeration system.

Graph with enthalpy on the x-axis and pressure on the y-axis showing an imaginary saturated curve, super-heated gas, super-cooled liquid as they move through the system.

Source: M. Boyette.