Presentation on theme: "Lesson 6 PROPERTY DIAGRAMS AND STEAM TABLES"— Presentation transcript:
1Lesson 6 PROPERTY DIAGRAMS AND STEAM TABLES DETERMINE any unknown properties for a fluid given a Mollier diagram and sufficient information to indicate the state of the fluid.DETERMINE any unknown properties for a fluid, given a set of steam tables and sufficient information to indicate the state of the fluid.DETERMINE the change in the enthalpy of a fluid as it passes through a system component, given the state of the fluid at the inlet and outlet of the component and either steam tables or a Mollier diagram.
2Property Diagrams Pressure- Temperature (P-T) diagrams Pressure-Specific Volume (P-v) diagramsPressure-Enthalpy (P-h) diagramsEnthalpy-Temperature (h-T) diagramsTemperature-Entropy (T-s) diagramsEnthalpy-Entropy (h-s) or Mollier diagrams.
10Steam Tables Saturated steam tables Superheated steam tables Both sets of tables are tabulations of pressure (P), temperature (T), specific volume (v), specific enthalpy (h), and specific entropy (s)
11Saturated Steam Tables Provide energy transfer properties of saturated water and saturated steam for temperatures from 32 to °F (the critical temperature) and for the corresponding pressure from to psi.Divided into two parts:Temperature Tables – Lists properties according to saturation temperature (Tsat)Pressure Tables - Lists properties according to saturation pressure (Psat).
13Property Diagrams and Steam Tables Summary The Mollier diagram can be used to determine various properties of a fluid.Mollier diagram is an h versus s plot.Can only be used when quality is greater than 50% and for superheated steam.Contains a series of constant temperature, constant pressure, constant moisture content, and constant superheat lines.
14Property Diagrams and Steam Tables Summary (continued) The steam tables can be used to determine various properties of water using the following equations.
15Property Diagrams and Steam Tables Summary (continued) The change in enthalpy of a fluid as it passes through a component can be determined using a Mollier diagram on steam tables.