Page 198 - Analysis, Synthesis and Design of Chemical Processes, Third Edition

The function, f(α i, j, k... ), is given in column 3 of Table 5.8.

From Table 7.8 and Equations 7.6 and 7.7, it can be seen that the bare module factor is given by

(7.8)

The values for the bare module cost multiplying factors vary between equipment modules. The
calculations for the bare module factor and bare module cost for a carbon steel heat exchanger are given
in Example 7.9.

Example 7.9

The purchased cost for a carbon steel heat exchanger operating at ambient pressure is $10,000. For a heat
exchanger module, Guthrie [9, 10] provides the following cost information.

Using the information given above, determine the equivalent cost multipliers given in Table 7.8 and the
following:
a. Bare module cost factor,

b. Bare module cost,

= (1 + 0.368 + 0.047 + (1.005)(0.368) + 0.136)(1 + 0.714) = 3.291
b. From Equation 7.6,

= (3.291)($10,000) = $32,910