Enthalpy/entropy diagram for

Figure 2-38. Mollier (enthalpy-entropy) diagram for steam.

Fig. 1.4 Pressure-volume and enthalpy-entropy diagrams for rocket propulsion.

Fig. 7.1. The enthalpy-entropy diagram for sterically stabilized dispersions.

R. W. Haywood, Thermodynamic Tables in SI (Metric) Units and Enthalpy-Entropy Diagram for Steam. Pressure-Enthalpy Diagram for Refrigerant 12 , Cambridge University Press, Cambridge, 1968. 

FIG. 2-8 Temperatnre-entropy diagram for carbon monoxide. Pressure P, in atmospheres density p, in grams per cubic enthalpy H, in joules per gram. (From Must and Stewart, NBS Tech. Note 202, 1963.)... 

Enthalpy-pressure diagram for water-steam 813 Enthalpy term, energy balance equation 74 Entropy 3,28... 

The h-S diagram becomes most convenient in following rocket motor processes and this is the reason for its introduction. The conveniences obtained are generally hidden by machine computation programs which essentially deal with the enthalpy-entropy process for the expansion process, h is the sensible enthalpy only. Theoretical performance calculations are performed in terms of the total enthalpy which is here defined as the sum of the sensible and chemical enthalpies only. 

Figure 2, Enthalpy, entropy diagram with exergy for reactants e and reaction products after an adiabatic, isobaric combustion (4).

Figure 4. Enthalpy, entropy diagram with exergy for reactants e- and reaction products 2 after an isothermal, isobaric combustion Q4) The change of state from 1 to la is a release of heat at constant temperature, therefore the entropy decreases.

The evaluation of the irreversible entropy production is very easily performed in these enthalpy, entropy diagrams as was shown by Knoche (A). It is simply for one mole methane ... 

Figure 6.2 Temperature-entropy diagram for pure CO2. Enthalpy H is measured in kcal/kg.

Available data on the thermodynamic and transport properties of carbon dioxide have been reviewed and tables compiled giving specific volume, enthalpy, and entropy values for carbon dioxide at temperatures from 255 K to 1088 K and at pressures from atmospheric to 27,600 kPa (4,000 psia). Diagrams of compressibiHty factor, specific heat at constant pressure, specific heat at constant volume, specific heat ratio, velocity of sound in carbon dioxide, viscosity, and thermal conductivity have also been prepared (5). 

Mollier diagram for potassium. Basis enthalpy = 0.0 oal/g atom at 298 K entropy = 15.8 oal/(g atom-K) at 298 K. (Aerojet-General Rep. AGN8194, vol Reproduced hy permission.)... 

Figure D-4 Enthalpy-log pressure diagram for Refrigerant 22. Temperature in °F, volume in ft3/lb, entropy in Btu/(lb °R), quality in weight percent. (Reprinted by permission of El du Pont de Nemours Company, 1967.)...

A thermodynamic diagram represents the temperature, pressure, volume, enthalpy, and entropy of a substance on a single plot. (Sometimes data for all these variables are not included, but the term still applies.) The most common diagrams are temperature/entropy, pressure/enthalpy (usually In P vs. FT), and enthalpy/entropy (called a Moltier diagram). The designations refer to the variables chosen for the coordinates. Other diagrams are possible, but are seldom used. 

Enthalpy/concentration diagram, 440-447 for sodium hydroxide/water, 444 for sulfuric acid/water, 441 Enthalpy/entropy (Mollier diagram), 183, 185 for steam (see back endpapers)... 

On an enthalpy versus entropy diagram (Mollier diagram), the above equation shows the slopes of chords to the constant pressure curve between input and output conditions. The constant pressure curves are convex (d2h/ds2). If the input conditions are the same for both exchangers, inequality (5.120) and Figure 5.5 show that... 

Thermochemical data on the separate phases in equUibrium are needed to constmct accurate phase diagrams. The Gibbs energy of formation for a pure substance as a function of temperature must be calculated from experimentally determined temperature-dependent thermodynamic properties such as enthalpy, entropy, heat capacity, and equihbrium constants. By a pure substance, one generally means a stoichiometric compound in which the atomic constituents ate present in an exact, simple reproducible ratio. 

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