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Fluid
Properties for New
Technologies
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14th Symposium on Thermophysical Properties Thursday,
Time (13:45 to 17:35 h) Location MATH100 in the Mathematics Building |
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The surfaces above show models of the pressure-volume-temperature (left) and the viscosity-pressure-temperature behavior (right) of water. The temperature range is 0 to 800 °C at pressures between 0.0006 and 40 MPa. Liquid and gaseous states are indicated by blue color, shaded from dark to light, respectively. Red marks the two-phase region where liquid and vapor coexist in phase equilibrium. Its boundaries are the saturated liquid and saturated vapor line which join in the critical point [(647.096±0.10) K, (22.064±0.032) MPa]. The projection of the two- phase region into the pressure-temperature plane yields the vapor pressure curve. The green sections of the pvT-surface represent parts of the solid (ice) and the vapor phase below the triple point [273.16 K, (611.657±0.010) Pa]. These surfaces are the result of decades of measurements which made water the best characterized fluid. How can this level of accurate knowledge be gained for other fluids and mixtures without decades of measurements? The images were first published in
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