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 = 80 kg/s. Steady-state operating data for the turbine and pump are labeled on the figure. Heat transfer from the water toits surroundings occurs at a rate of 2 kW. For the turbine, heat transfer with the surroundings and potential energy effects arenegligible. Kinetic energy effects at all numbered states can be ignored.h = 417.69 kJ/kgMixing chamberOey = 2 kWSteamP3 = 30 barT3= 400°CdzTurbinePumpP4 = 5 barT= 180°C 14Saturated liquid waterm, Pi = 1 barDetermine:(a) the magnitude of the pump power, in kW.(b) the mass flow rate of steam, in kg/s, that flows through the turbine.

Given data Mass flow rate of water in the pump=80kg/s Heat loss in pump=2KW dz=25 m

Answered: The figure below shows a turbine-driven…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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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.
The figure below shows a turbine-driven pump that provides water to a mixing chamber located dz = 45 m higher than the pump, where n = 80 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 T; = 400°C dz Turt Pump P4 =5 bar -4 T = 180°C Saturated liquid water m, Pj = 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.
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Q2. The following particulars relate to a two row velocity compounded impulse wheel which forms a first stage of a combination turbine. Steam velocity at nozzle outlet = 579.12m/s Mean blade velocity = 115.82m/s Nozzle outlet angle = 16° Outlet angle first row of moving blades = 18° Outlet angle fixed guide blades = 22° Outlet angle, second row of moving blades = 36° Steam flow rate = 2.4 kg/s The ratio of the relative velocity at outlet to that at inlet is 0.84 for all blades. Determine for each row of moving blades the following ⚫ The velocity of whirl • The tangential thrust on blades • The axial thrust on the blades • The power developed What is the efficiency of the wheel as a whole?

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