a)The power consumed in the pump [kW] b)Energy efficiency of the power plant c)Calculate the exergy efficiency of the plant. Note:The properties of the compressed liquid can be taken equal to the properties of the saturated liquid at a given temperature.
a)The power consumed in the pump [kW] b)Energy efficiency of the power plant c)Calculate the exergy efficiency of the plant. Note:The properties of the compressed liquid can be taken equal to the properties of the saturated liquid at a given temperature.
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
The figure shows an organic Rankine cycle plant using n-pentane as the working fluid. According to the system operating conditions given in the table
a)The power consumed in the pump [kW]
b)Energy efficiency of the power plant
c)Calculate the exergy efficiency of the plant.
Note:The properties of the compressed liquid can be taken equal to the properties of the saturated liquid at a given temperature.
Transcribed Image Text:Flow
T (°C)
h(kJ/kg)
s(kJ/kg.K)
Fluid
phase
(КРа)
(kg/s)
no
1
300
120
water
12
compressed liquid
2
250
85
12
water
compressed liquid
3
468.8
90
saturated vapor
467.4
1.329
n-pentan
n-pentan
n-pentan
n-pentan
4
210
70
superheated vapor
438.8
1.332
5
210
59.2
saturated liquid
80.1
0.2541
468.8
59.2
80.27
0.2533
compressed liquid
compressed liquid
7
dead state
200
25
8.
dead state
200
30
compressed liquid
101.3
20
83.9
0.2962
dead state
dead state
compressed liquid
101.3
20
-13.61
-0.04507
dead state n-pentan
compressed liquid
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