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Production and Capital Cost Estimation 77

Air Coolers

Correct for size.
( 145 r- 8

CpB2i=137 | ——— | =$7,342
I 1 >l

Correct for inflation from mid-1987 to mid-1998. Use the cost index for heat
exchangers.
382.8
CPB i = 7,342 ——— =$8,739
321.6
Correct for temperature (fj =1.1), pressure (f p = 1.0), and materials-of-
construction (fM = 1.0). There is no information on a correction factor for design.
Usef D =1.0.

C PAi = 1.1 (1.0) (1.0) (1.0) (8,739) = $9,613

Calculate the installation factor.

f n = (2.5) (1.34) (1.18) = 3.953

Dowtherm Pump

Correct for size.
( 7.5 r- 42

C PB2i = 9,000 | —— | = $5,961
I 20.0 >/

Correct for inflation from January 1990 to mid-1998. Use the cost index for
pumps.

648.5
C PBi = 5,961 ——— =$7,844
492.8

C PAi = 1.1 (1.0) (1.0) (1.0) (7844) = $8,628

f, i = 2.8(1.34) (1.18) = 4.427

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