• Home
  • Download PDF
  • Order CD-ROM
  • Order in Print
Pressure-Specific Volume (P-n) Diagram
Enthalpy-Temperature (h-T) Diagram

Thermodynamics Heat Transfer and Fluid Flow Volume 1 of 3
Page Navigation
  43    44    45    46    47  48  49    50    51    52    53  
PROPERTY DIAGRAMS AND STEAM TABLES Thermodynamics Pressure-Enthalpy (P-h) Diagram A  P-h  diagram  exhibits  the  same Figure 11   P-h Diagram for Water features as a P-n diagram.   Figure 11  is  the  P-h  diagram  for  pure water. A   P-h   diagram   can   be constructed for any pure substance. Like  the  P-n  diagram,  there  are regions on a P-h diagram in which two  phases  exist  together.    In  the liquid-vapor  region  in  Figure 11, water   and   steam   exist   together. For   example,   at   point   A,   water with   an   enthalpy   (hf),  given   by point B, exists together with steam with  an  enthalpy  (hg),  given  by point   C. The   quality   of   the mixture    at    any    point    in    the liquid-vapor  region  can  be  found using the following relationship. h = xhg + (1 - x)hf x h hf hfg where: h = specific enthalpy of the mixture (Btu/lbm) x = quality of the mixture (no units) hg = specific enthalpy of the saturated vapor (Btu/lbm) hf = specific enthalpy of the saturated liquid (Btu/lbm) hfg = specific enthalpy change of vaporization (Btu/lbm) or hfg = hg - hf HT-01 Page 44 Rev. 0







Western Governors University

Privacy Statement
Press Release
Contact

© Copyright Integrated Publishing, Inc.. All Rights Reserved. Design by Strategico.