Solutions Manual Analysis, Synthesis and Design of Chemical Processes 4th Edition Richard a. Turton, Richard C. Bailie

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Chapter 10 Chapter 10 (short answers) 10.1 NPV = 0 at DCFROR. So, if use hurdle rate to calculate NPV, if NPV > 0, rate of return exceeds hurdle rate.

10.2

Choose the project with the greatest NPV.

10.3 If improvements are proposed for a process, an incremental economic analysis uses the capital cost of the improvements and the changes in the cost of manufacture (operating cost, revenue, etc.) to evaluate profitability. The entire process is not evaluated.

10.4 Yes. There would be a difference in the operating costs, which would affect the profitability.

10.5 EAOC or Common Denominator or Capitalized Cost methods but not NPV because equipment lives are different.

10.6 Risk cannot be eliminated. Monte Carlo simulation allows the risk to be quantified and analyzed.

10.7 Advantages include quantifying risk and thereby obtaining a more comprehensive picture of the effect of different factors on the profitability. Disadvantages include obtaining predictions of the variability of different parameters from historic data (difficult to predict the future).

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10.10

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MACRS method for 5 years

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