Calculate steam and water operating costs per year for Example 11-1. Use \(8000 \mathrm{~h} /\) year. Calculate the TAC for Example 11-1. Payback period is 3 years, and costs are based on 2020 costs. What fraction of the TAC is due to energy costs? Think about the pressure of the steam.

a. Use values from Turton et al. (2018) in Table 11-9.

b. Use values from Luyben (2013) in Table 11-9 (use Turton et al. water cost).

Example 11-1

Example 11-2

Example 11-3

Table 11-9

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Estimate the cost in 2020 of the distillation column (shell and trays) designed in Examples 10-1 to 10-3. In addition, design and determine the cost of the reboiler and condenser (both shell and tube with floating head). Assume steam is at 140.0C in the reboiler, and cooling water enters at 30.0C and leaves at 45.0C. AC6 = 31,569 kJ/kmol and Ac7 = 34,676 kJ/kmol at their normal boiling points.