Two different size pumps would be needed for different sized piping networks. Remembering 1 HP = 0.746 kW, if the MARR is 12%/yr and the cost of electricity is $0.06/kWhr,
a. What is the breakeven point in terms of hours of operation/yr?
b. using a sensitivity analysis of +25% on the cost of A, what is the new breakeven point?
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Pump A 6 in network
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Pump 8 8 in network
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Output HP
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15
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10
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Pump Efficiency
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0.60
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0.75
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Cost of Installation, $
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2410
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4820
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Useful Life, years
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8
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8
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Salvage Value, $
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80
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0
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