The figure below shows a turbine-driven pump that provides water to a mixing chamber located dz = 25 m higher than the pump, where in = 20 kg/s. Steady-state operating data for the turbine and pump...


The figure below shows a turbine-driven pump that provides water to a mixing chamber located dz = 25 m higher than the pump,<br>where in = 20 kg/s. Steady-state operating data for the turbine and pump are labeled on the figure. Heat transfer from the water to<br>its surroundings occurs at a rate of 2 kW. For the turbine, heat transfer with the surroundings and potential energy effects are<br>negligible. Kinetic energy effects at all numbered states can be ignored.<br>h = 417.69 kJ/kg<br>Mixing chamber<br>Ocy = 2 kW<br>Steam<br>P3 = 30 bar<br>T3 = 400°C<br>dz<br>Wev<br>Turbine<br>Pump<br>P4 = 5 bar<br>4<br>T = 180°C<br>Saturated liquid water<br>m, PL = 1 bar<br>Determine:<br>(a) the magnitude of the pump power, in kW.<br>(b) the mass flow rate of steam, in kg/s, that flows through the turbine.<br>

Extracted text: The figure below shows a turbine-driven pump that provides water to a mixing chamber located dz = 25 m higher than the pump, where in = 20 kg/s. Steady-state operating data for the turbine and pump are labeled on the figure. Heat transfer from the water to its surroundings occurs at a rate of 2 kW. For the turbine, heat transfer with the surroundings and potential energy effects are negligible. Kinetic energy effects at all numbered states can be ignored. h = 417.69 kJ/kg Mixing chamber Ocy = 2 kW Steam P3 = 30 bar T3 = 400°C dz Wev Turbine Pump P4 = 5 bar 4 T = 180°C Saturated liquid water m, PL = 1 bar Determine: (a) the magnitude of the pump power, in kW. (b) the mass flow rate of steam, in kg/s, that flows through the turbine.

Jun 11, 2022
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