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  3. which has the greatest npv assuming a 25 year plan

Which has the greatest NPV assuming a 25 year planning horizon and MARR = 12%? Install a...

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Electrical Engineering

Which has the greatest NPV assuming a 25 year planninghorizon and MARR = 12%?

Install a $20,000 solar system that will last 25years, and generate 38,000 kWh/year at $0.10/kWh.
Install a $25,000 Ground-Source Heat pump that will last 50 yearsand save $3,500/year.
Both options has equal NPV
Not possible to be calculated
_______________________________
The following instruments will be required to measure theefficiency of a pump (excluding the motor)

Pressure gauges, flow meter, electrical powermeter
Pressure gauges, flow meter, torque meter, tachometer
Electrical power meter, torque meter, tachometer
Pitot tube, electrical power meter
_______________________________
Which instrument is used to monitor O2, CO in flue gas?

Combustion analyser
Power analyser
Pyrometer
Fyrite
_______________________________
What of the following is NOT considered as a type of variablevolume control options for air flow that can be applied ?

Outlet Damper Control
Magnetic Clutches
Series Switched Capacitor Control
Variable Frequency Drive

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