LECTURE 7
7.1 Thermodynamics Property Tables


Tables in SI units start from page 897 (Appendix 1).
Tables in English units start from page 947 (Appendix 2).
7.1.1 Saturation Tables

 
Table A-4
pp. 904-905
 Saturated Water: Temperature Table
 
Table A-5
pp. 906-907
 Saturated Water: Pressure Table

  Compressed Liquid
  Liquid-Vapor Mixture
  Superheated Vapor

The total volume of the liquid-vapor mixture can be determined as follows:

Exercise

7.1.2 Compressed Liquid and Superheated Water Tables

 
Table A-6
pp. 908-911
 Superheated Water
 
Table A-7
pp. 912
 Compressed Liquid Water

In the superheated vapor table, the values begin with the saturated vapor state. The data in the compressed liquid table end with saturated liquid states.

Linear interpolation is required when the states encountered in problems do not fall exactly on the values provided by the tables.

7.2 Specific Internal Energy and Enthalpy

Enthalpy (H)
- a thermodynamic property

H = U + pV
Specific Enthalpy (h) h = u + pv
Specific Internal Energy (u)

Exercise


7.3 Workshops: Using Thermodynamics Tables


Go to the Thermodynamics Tables Wizard for the workshops.
7.4 Reference States and Reference Values


The values of u, h, and s given in the property tables are not obtained by direct measurement but are calculated from other data that can be more readily determined experimentally.

When applying the energy analysis, it is the difference in internal, kinetic and potential energy between two states that are important, and not the values of these energy quantities themselves.

The reference value cancels as long as the calculations being performed involve only differences in these properties.

Water
Reference state: triple point
Reference value: ()