Page 95 - Chemical process engineering design and economics

80 Chapter 2

fM material factor (fraction of base equipment cost)

f p pressure factor (fraction of base equipment cost)
f"s fractional salvage value
temperature factor (fraction of base equipment cost)
f T
i fractional interest rate
I inflation index
K plant productivity

L operating-labor man hours, h/kg
m plant capacity, kg/h
n number of years since 1952 or equipment-cost capacity component
N number of process units
p fractional, yearly labor-productivity increase per year
Q equipment capacity
Subscripts

i refers to a piece-of-equipment
k component of the installation factor listed in Table 7

REFERENCES

1. Winter, O., Preliminary Economic Evaluation of Chemical Processes at
the Research Level, Ind. Eng. Chem., 61,4,45,1969.
2. Uhl, VW., Hawkins, A.W., Technical Economics for Engineers, AlChE
Continuing Education Series, 5, American Institute of Chemical Engi-
neers, New York, NY, 1971.
3. Perry, R.H., Chilton, C.H., eds., Chemical Engineer's Handbook, 5th ed.,
McGraw-Hill, New York, NY, 1973.
4. Peters, M.S., Timmerhaus, K.D., Plant Design and Economics for
Chemical Engineers, 4th ed., McGrawHill, New York, NY, 1991.
5. Humphreys, K.K., ed., Jelen's Cost and Optimization Engineering, 3rd ed.,
McGraw-Hill, New York, NY, 1970.
6. Happel, J., Jordan, D. G., Chemical Process Economics, Marcel
Dekker, New York, NY, 1970.
7. Cevidalli, G., Zaidman, B., Evaluate Research Projects, Chem. Eng.,
87, 14, 145,1980.
8. Wessel, H.E., New Graph Correlates Operating Labor Data for
Chemical Processes, Chem. Eng., 59, 7, 209, 1952.

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