Use Excel and FluidProp. Draw value diagram for all heat exchangers. Perform an off-design...

Question

Use Excel and FluidProp. Draw value diagram for all heat exchangers. Perform an off-design calculation

Robert · Accepted Answer

Ans. 1 
 
For the burning of wood, the burning of carbon generates the heat energy, which 
used as a thermal energy. 
 Now, consider the equation for the burning of the carbon content, 
2 2
2 2 2
2 2
C O CO
H 1 / 2O H O
S+O SO
 
 

 
But the sulphur composition can be neglected, 
Now calculate the heat generated by the above equations, 
Now for 100 kg of wood, 
2
2 2
2 2
C 30.88 kg, 1.2 kg
H 3.26 kg, O 16.30 kg
H O 45.5kg, SiO 3.5kg
N 
 
 
 
Now, calculate the no. of moles of the components, 
2
2
2
2
2
30.88
C 2.57 kg mole
12
3.26
H 1.63kg mole
2
45.5
H O 2.52 kg mole
18
1.2
N 0.045kg mole
28
16.3
O 0.5kg mole
32
3.5
SiO 0.058 kg mole
60.08
 
 
 
 
 
 
 
Now for the first two diesel engines, 
The composition given, 
0
P 1.2 bar
T 322 C
mass flow =6.9 kg/s


 
Now, calculate the efficiency of the Rankin cycle, 
From the Rankin cycle, 
4 1 1
1 1 4
h Q h
Q h h
 
 
 
For the power use, 
1 2
1 2
T
T
h W h
W h h
 
 
 
Forcondenser , 
2 2 3
2 2 3
h Q h
Q h h
 
 
 
For the pump  
3 4
4 3
p
p
h W h
W h h
 
 
 
Now,

Use Excel and FluidProp. Draw value diagram for all heat exchangers. Perform an off-design calculation

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