1. Contact Condenser Sizing.xls(Cost Chart) ISSI
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$50,000
$100,000
$150,000
$200,000
$250,000
$300,000
1,000 1,500 2,000 2,500 3,000 3,500 4,000 4,500 5,000 5,500 6,000
Scrubber Circulation Rate, Q (GPM)
Figure A3 - Equivalent Uniform Annual Cost (EUC) and Amortized (Annual) Capital
Investment for Contact Condenser (Scrubber)
EUC = 41,499.19 + 24.04905(Q) + 2.43x10-3(Q)2
CI = 6,712.524(Q)0.23961
EUC
CI
Optimal Design
Assumptions: HE is inspected annually, 5% plates replaced, all gaskets; U is not affected by no. plates; frame is 10% of HE price; plates are additive for total area; electricity costs 7 ct/kWh; 90% on-stream factor; plant life is 10 years; interest is 10%; PP packing; new
pump seals annually.
Optimal includes a consideration of reliability and cost
4,000 gpm is 35.4 gpm/ft2, design rate for MMI scrubber. Scrubber has been safely operated down to 68% of design, or 2,280 gpm
for an 11 ft tower. This is 24 gpm/ft2.