superheated - compressed

Superheated Vapor

• Characteristics Compared to Saturated Vapor:

  • Lower Pressures:

    • Pressure is less than the saturation pressure at a given temperature (P < P_sat at a given T).

  • Higher Temperatures:

    • Temperature exceeds the saturation temperature at a given pressure (T > T_sat at a given P).

  • Higher Specific Volumes:

    • Specific volume is greater than that of the saturated vapor at the same pressure or temperature (v > v_g at a given P or T).

  • Higher Internal Energies:

    • Internal energy is greater than the saturated vapor's internal energy at a given pressure or temperature (u > u_g at a given P or T).

  • Higher Enthalpies:

    • Enthalpy is greater than that of the saturated vapor at the same pressure or temperature (h > h_g at a given P or T).

Compressed Liquid

• Characteristics:

  • Higher Pressures:

    • Pressure is higher than that of the saturated liquid at a given temperature (P > P_sat at a given T).

  • Lower Temperatures:

    • Temperature is less than the saturation temperature at the same pressure (T < T_sat at a given P).

  • Lower Specific Volumes:

    • Specific volume is less than that of the saturated liquid at a given pressure or temperature (V < V_f at a given P or T).

  • Lower Internal Energies:

    • Internal energy is less than that of the saturated liquid (u < u_f at a given P or T).

  • Lower Enthalpies:

    • Enthalpy is lower than that of the saturated liquid at a given pressure or temperature (h < h_f at a given P or T).

Key Difference from Superheated Vapor

• Compressed Liquid Properties:

  • The properties of compressed liquids are not significantly different from the corresponding values of saturated liquids.