Answered: Average demand of steam for pressure…

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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Average demand of steam for pressure digestion	260 kg/hr
Temperature of steam for pressure digestion	164 ^oC
Absolute pressure of steam during digestion process	400 kPa
Temperature of water supplied	20 ^oC
Pressure drop in water line	10 kPa
Pressure of flue gases at steam generator entry	110 kPa
Temperature of flue gases at steam generator entry	254 ^oC
Mass flow rate of flue gases at steam generator entry	132 kg/min
Pressure drop in flue gas line	5 kPa
Flue gas C_p	1.005 kJ/kg K
Flue gas C_v	0.718 kJ/kg K
Thermal loses from steam generator	5.8 kW
Temperature of Steam Generator outer surface	58.1 ^oC

Please complete the following question. With full working out thanks.

1. Determine the rate of entropy generation in the steam generator, in kW/K. Show all steps of the calculations, including estimating all parameters required to determine the rate of entropy generation. (TO 5 DECIMAL PLACES)

Thank you so much.

Bauxite ore
Red mud
Crushing /
Grinding
Pressure
digestion
Heating tank
Dehydration
by heating
Electrolytic
tank
Steam generator
mflue_SG
不
Tflue_SG_out
mw Steam
ITw_out
Steam
generator
Tflue_SG_in
Aluminium
Hot flue
gas line
loss_SG
Pw_in
Tw_in
Pumpl
Treated
Bore water
Holding
Furnace
Casting
Brayton Gas Turbine Heat Engine Power Unit
Wturbine
mair
mflue_BEH
Tflue_BEH_in
Turbine
T4
mairi 4
1 T3
I
↑
I
3
loss_Turb
-Tb_turb
Brayton Engine
Heater
Qloss_BHE
mflue_BEH
Tflue_BEHout
T2
2
Ambient air
mair
I
T₁
Compressor
Qloss_comp
기
↑ Tb_comp
W comp_in

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Given data:

To find:

1. Rate of entropy generation in steam generation.

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