Biomedical Engineering Reference
In-Depth Information
TABLE 2.5
Capacity Index of Some Process Equipment
Equipment
n
Water
gas manufacture
0.81
Fischer
Tropsch (complete)
0.77
Centrifugal blower (1000
10000 cfm)
0.59
Reactor (300 psi)
0.56
Belt conveyor
0.85
Catalytic cracking
0.83
Oxygen plant
0.65
Centrifugal fan (1000
10,000 cfm)
0.44
Drum dryer (atm)
0.41
Screw conveyor
0.83
Packaged steam generator
0.61
H
2
S removal
0.55
Compressor rotary (10
400 cfm, 150 psig)
0.69
Centrifugal pump with motor
0.33
Crusher and grinder
0.65
Source: Data compiled from Humphreys and Wellman (1996), pp. 10
18.
Some of them include Engineering News Record (ENR), Marshall and
Swift (M&S), Nelson-Farrar Refinery construction index, and Chemical
Engineering Plant cost index (CE).
2.4.2 Capital Requirement
The capital cost, CC, includes the cost of biomass energy conversion system,
C
g
, cost of fuel preparation and handling, C
fp
, cost of turbine generator sys-
tem, C
tg
and cost of auxiliary plants, C
e
, which include the electrical cost,
oxygen separation plant.
CC
5
C
g
1
C
fp
1
C
tg
1
C
e
(2.9)
The total plant cost (TPC) includes the cost of plant equipment (CC),
direct and indirect costs of construction (C
con
), cost of project development
(C
proj
), most of which is office cost, and the contingency cost (C
cont
).
TPC
CC
1
C
con
1
C
proj
1
C
cont
(2.10)
5
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