Liquid water at 200 kPa and 15°C is heated in a chamber by

Chapter 7, Problem 156P

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Liquid water at \(200 \mathrm{kPa} \text { and } 15^{\circ} \mathrm{C}\) is heated in a chamber by mixing it with superheated steam at \(200 \mathrm{kPa} \text { and } 150^{\circ} \mathrm{C}\). Liquid water enters the mixing chamber at a rate of \(4.3 \mathrm{~kg} / \mathrm{s}\), and the chamber is estimated to lose heat to the surrounding air at \(20^{\circ} \mathrm{C}\) at a rate of 1200 kJ/min. If the mixture leaves the mixing chamber at 200 kPa and \(80^{\circ} \mathrm{C}\), determine

() the mass flow rate of the superheated steam and

() the rate of entropy generation during this mixing process.

Equation Transcription:

         

       

           

 

 

Text Transcription:

200 kPa and 15°C          

200 kPa and 150°C      

4.3 kg/s          

20°C  

80 °C