Q16) The following data are for a simple steam power plant as shown.State2347P MPa6.26.15.9 5.7 5.50,01 0,009T°C45175 50049040State 6 has x, = 0.92, and velocity of 200 m/s. The rate of steam flow is 25 kg/s, with300 kW power input to the pump. Piping diameters are 200 mm from steam generatorto the turbine and 75 mm from the condenser to the steam generator. Assume thecooling water comes from a lake at 15°C and is returned at 25°C.Determine:a) The rate of heat transfer in the condenser.b) The mass flow rate of cooling water from the lake.SteamTurbinegeneratorc) The rate of heat transfer in the economizer, which isa low temperature heat exchanger.d) The rate of heat transfer needed in the steam generator.CoolingwaterCondensere) Determine the velocity at state 5 and the power outputof the turbine.EconomizerPump[a) -56130 kW, b) 1339.6 kg/s, c) 13750 kW, d) 67075 kW, e) 49 m/s, 24 800 kW]

Q16) The following data are for a simple steam power plant as shown. 4 State 2 P MPa T°C State 6 has x, = 0.92, and velocity of 200 m/s. The rate of steam flow is 25 kg/s, with 300 kW power input to the pump. Piping diameters are 200 mm from steam generator to the turbine and 75 mm from the condenser to the steam generator. Assume the cooling water comes from a lake at 15°C and is returned at 25°C., 6.2 6.1 5.9 5.7 5.5 0.01 0.009 45 175 500 490 40 %3D Determine: a) The rate of heat transfer in the condenser. b) The mass flow rate of cooling water from the lake. c) The rate of heat transfer in the economizer, which is a low temperature heat exchanger. d) The rate of heat transfer needed in the steam generator. e) Determine the velocity at state 5 and the power output Steam Turbine generator Cooling water Condenser of the turbine. Economizer

Q16) The following data are for a simple steam power plant as shown. 4 State 2 P MPa T°C State 6 has x, = 0.92, and velocity of 200 m/s. The rate of steam flow is 25 kg/s, with 300 kW power input to the pump. Piping diameters are 200 mm from steam generator to the turbine and 75 mm from the condenser to the steam generator. Assume the cooling water comes from a lake at 15°C and is returned at 25°C., 6.2 6.1 5.9 5.7 5.5 0.01 0.009 45 175 500 490 40 %3D Determine: a) The rate of heat transfer in the condenser. b) The mass flow rate of cooling water from the lake. c) The rate of heat transfer in the economizer, which is a low temperature heat exchanger. d) The rate of heat transfer needed in the steam generator. e) Determine the velocity at state 5 and the power output Steam Turbine generator Cooling water Condenser of the turbine. Economizer

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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Question

Q16) The following data are for a simple steam power plant as shown.
State
2
3
4
7
P MPa
6.2
6.1
5.9 5.7 5.5
0,01 0,009
T°C
45
175 500
490
40
State 6 has x, = 0.92, and velocity of 200 m/s. The rate of steam flow is 25 kg/s, with
300 kW power input to the pump. Piping diameters are 200 mm from steam generator
to the turbine and 75 mm from the condenser to the steam generator. Assume the
cooling water comes from a lake at 15°C and is returned at 25°C.
Determine:
a) The rate of heat transfer in the condenser.
b) The mass flow rate of cooling water from the lake.
Steam
Turbine
generator
c) The rate of heat transfer in the economizer, which is
a low temperature heat exchanger.
d) The rate of heat transfer needed in the steam generator.
Cooling
water
Condenser
e) Determine the velocity at state 5 and the power output
of the turbine.
Economizer
Pump
[a) -56130 kW, b) 1339.6 kg/s, c) 13750 kW, d) 67075 kW, e) 49 m/s, 24 800 kW]

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