2. Consider the two air conditioning systems detailed below. a) Use annual equivalent analysis to determine the sensitivity of the economic decision to MARR values of $8%, 10%, 12%$ , and $15%$ . b) If MARR is $10%$ , plot the annual equivalent values for each system for life values from 4 to 8 for System 1, and 6 to 12 for System 2. Assume the salvage values and annual operating costs are the same for each life value. Further, assume that the compressor is replaced at mid-life. Plot annual equivalent values for evennumbered years only. Which system do you prefer?

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2. Consider the two air conditioning systems detailed below. a) Use annual equivalent analysis to determine the sensitivity of the economic decision to MARR values of

8%, 10%, 12%

, and

15%

. b) If MARR is

10%

, plot the annual equivalent values for each system for life values from 4 to 8 for System 1, and 6 to 12 for System 2. Assume the salvage values and annual operating costs are the same for each life value. Further, assume that the compressor is replaced at mid-life. Plot annual equivalent values for evennumbered years only. Which system do you prefer?

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