Using Entropy Data and ConceptsUsing the appropriate

Chapter 6, Problem 3P

(choose chapter or problem)

Using the appropriate table, determine the indicated property. In each case, locate the state by hand on sketches of the T–y and T–s diagrams.

(a) water at p = 0.20 bar, \(s=4.3703 \mathrm{\ kJ} / \mathrm{kg} \cdot \mathrm{K}\). Find h, in kJ/kg.

(b) water at p = 10 bar, u = 3124.4 kJ/kg. Find s, in \(\mathrm{kJ} / \mathrm{kg} \cdot \mathrm{K}\).

(c) Refrigerant 134a at \(T=-28^{\circ} \mathrm{C}\), x = 0.8. Find s, in \(\mathrm{kJ} / \mathrm{kg} \cdot \mathrm{K}\).

(d) ammonia at \(T=20^{\circ} \mathrm{C}, s=5.0849 \mathrm{\ kJ} / \mathrm{kg} \cdot \mathrm{K}\). Find u, in kJ/kg.