Complete this table for H2 O : T,^∘C P, kPa u, kJ / kg Phase description

step 1 We are going to fill in the blanks over here. 143 .61 will be the top column then you have 220 a

Complete this table for H2 O : T,^∘C P, kPa u,...

Complete this table for $\mathrm{H}_{2} \mathrm{O}$ : $$ \begin{array}{lccc} \hline T,{ }^{\circ} \mathrm{C} & P, \mathrm{kPa} & u, \mathrm{~kJ} / \mathrm{kg} & \text { Phase description } \\ \hline & 400 & 1450 & \\ 220 & & & \text { Saturated vapor } \\ 190 & 2500 & & \\ & 4000 & 3040 & \\ \hline \end{array} $$

Complete this table for $\mathrm{H}_{2} \mathrm{O}$ :
$$
\begin{array}{lccc}
\hline T,{ }^{\circ} \mathrm{C} & P, \mathrm{kPa} & u, \mathrm{~kJ} / \mathrm{kg} & \text { Phase description } \\
\hline & 400 & 1450 & \\
220 & & & \text { Saturated vapor } \\
190 & 2500 & & \\
& 4000 & 3040 & \\
\hline
\end{array}
$$

Key Concepts

Steam Tables

Steam tables are collections of thermodynamic data that list properties such as pressure, temperature, specific volume, internal energy, and enthalpy of water (or other working fluids) at various states. They serve as an essential reference for engineers and scientists, allowing for the characterization of water in its various phases under different conditions of pressure and temperature.

Saturation Properties

Saturation properties refer to the state at which water is in equilibrium between its liquid and vapor phases. At a given saturation temperature or pressure, water exists as a mixture of saturated liquid and saturated vapor, and the properties at these points are unique. These properties are central to the analysis of phase change phenomena and to the completion of property tables where phase descriptions are provided.

Phase Equilibrium

Phase equilibrium describes the condition in which multiple phases of a substance coexist in balance. For water, this includes the saturated state where the liquid and vapor phases are present simultaneously. Understanding phase equilibrium is crucial when determining the phase description (such as saturated vapor or compressed liquid) given the temperature and pressure conditions.

Internal Energy

Internal energy is a measure of the total energy contained within a substance, arising from the kinetic and potential energies of its molecules. In the context of water and steam tables, internal energy values help determine the state of the fluid and are used to differentiate between different phases, such as superheated vapor and compressed liquid.

Interpolation Techniques

Interpolation techniques are used to estimate thermodynamic properties that fall between tabulated values in standard references like steam tables. When a measured or required condition does not exactly match a table entry, interpolation allows for an accurate estimation of properties such as pressure or internal energy, ensuring precise completion of state property tables.

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