Figure below shows a simple vapor power plant operating at steady state with water as the working fluid. Data at key locations are given on the figure. The mass flow rate of the water circulating through the components is 109 kg/s and isentropic turbine efficiency is 80%. Stray heat transfer and kinetic and potential energy effects can be ignored. Determine (a) the net power developed, in MW. (b) the thermal efficiency. (c) the isentropic pump efficiency. (d) the mass flow rate of the cooling water, in kg/s. (e) the rates of entropy production, each in kW/K, for the turbine, condenser, and pump. P-100 bar T-560°C Power out Turbine Py-0.08 bar -80% Steam Cooling water in at 20°C generator Condenser Pe100 bar 4 T-60°C Cooling water out at 40°c Pump 3 Pz= 0.08 bar Saturated liquid Power in

Figure below shows a simple vapor power plant operating at steady state with water as the working fluid. Data at key locations are given on the figure. The mass flow rate of the water circulating through the components is 109 kg/s and isentropic turbine efficiency is 80%. Stray heat transfer and kinetic and potential energy effects can be ignored. Determine (a) the net power developed, in MW. (b) the thermal efficiency. (c) the isentropic pump efficiency. (d) the mass flow rate of the cooling water, in kg/s. (e) the rates of entropy production, each in kW/K, for the turbine, condenser, and pump. P-100 bar T-560°C Power out Turbine Py-0.08 bar -80% Steam Cooling water in at 20°C generator Condenser Pe100 bar 4 T-60°C Cooling water out at 40°c Pump 3 Pz= 0.08 bar Saturated liquid Power in

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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Concept explainers

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.

Question

Figure below shows a simple vapor power plant operating at steady state with water
as the working fluid. Data at key locations are given on the figure. The mass flow
rate of the water circulating through the components is 109 kg/s and isentropic
turbine efficiency is 80%. Stray heat transfer and kinetic and potential energy effects
can be ignored. Determine
(a) the net power developed, in MW.
(b) the thermal efficiency.
(c) the isentropic pump efficiency.
(d) the mass flow rate of the cooling water, in kg/s.
(e) the rates of entropy production, each in kW/K, for the turbine, condenser, and
pump.
P-100 bar
Ty-$60°C
Power out
Turbine
Py-0.08 bar
-80%
Steam
Cooling
water in at 20°C
generator
Condenser
P-100 bar
T-60°C
Cooling
water out at 40°C
4.
Pump
3 P= 0.08 bar
Saturaied liquid
Power
in
ww

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True Or False
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