A flash evaporator separates compressed liquid water at $2\,\text{MPa}$, $200\,^\circ\text{C}$ into saturated liquid and vapour at ${510}\,\text{kPa}$. What is the specific entropy generation, $s_\text{gen} = \dot{S}_\text{gen}/\dot{m}_\text{in}$ ? Answer: $s_\text{gen} =$ $\text{J}/(\text{kg}\cdot\text{K})$ (answer tolerance: $0.2 \text{J}/(\text{kg}\cdot\text{K})$)