Now that we have considered the design of the entire column we can explore the effect of design and operating parameters on the cost of operation. A brief review of economics will be helpful (for complete coverage, see a design or economics text such as Peters et al., 2003; Seider, et al., 2009; Sullivan et al., 2006; Turton et al., 2009; Ulrich, 1984; or Woods, 1976).
Capital costs can be determined by estimating delivered equipment costs and adding on installation, building, piping, engineering, contingency, and indirect costs. These latter costs are often estimated as a factor times the delivered equipment cost for major items of equipment.
where the Lang factor ranges from approximately 3.1 to 4.8. The Lang ...