Three return steam lines in a chemical processing plant

Chapter 4, Problem 4.86

(choose chapter or problem)

Three return steam lines in a chemical processing plant enter a collection tank operating at steady state at 1 bar. Steam enters inlet 1 with flow rate of 0.8 kg/s and quality of 0.9. Steam enters inlet 2 with flow rate of 2 kg/s at \(200^{\circ} \mathrm{C}\). Steam enters inlet 3 with flow rate of 1.2 kg/s at \(95^{\circ} \mathrm{C}\). Steam exits the tank at 1 bar. The rate of heat transfer from the collection tank is 40 kW. Neglecting kinetic and potential energy effects, determine for the steam exiting the tank

(a) the mass flow rate, in kg/s.

(b) the temperature, in \({ }^{\circ} \mathrm{C}\).