EML3100 HW #18 - Fall 1998

Due: Tuesday 10/27/98

Problems:
4.77, Give it your best 1-1.5 hour effort...
5.21, 5.24
5.28
5.30
5.41

Answers:
4.77:Q-dotin = 4.01 x 105 kW
W-dotnet = 1.195 x 105 kW
m-dotcooling water = 4485 kg/s
5.21: no answer will be given
5.24: no answer will be given
5.28: no answer will be given, but etaCarnot = 0.800
5.30: no answer will be given, but etaCarnot = 0.40
5.41: no answer will be given, but betaCarnot = 5.0

Hints:
4.77
* Consider each device separately
* Find the phase at each state
* Heat transferred FROM the water passing through the condenser is equal to the heat transferred TO the cooling water.
* Net power = |power out of turbine| - |power into pump|
* USE UNITS!
Chapter 5 problems
* Be sure to draw a schematic of the device
* Remember to use ABSOLUTE temperature units
* To evaluate a claim, you must first determine the Carnot "efficiency"

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