A 75-hp (shaft output) motor that has an efficiency of 91.0 percent is worn out and is to be replaced by a highefficiency motor that has an efficiency of 95.4 percent. The motor operates 4368 hours a year at a load factor of 0.75. Taking the cost of electricity to be $0.12/kWh, determine the amount of energy and money saved as a result of installing the highefficiency motor instead of the standard motor. Also, determine the simple payback period if the purchase prices of the standard and high-efficiency motors are $5449 and $5520, respectively.
Ohm's law
Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.
Path of Least Resistance
In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.
A 75-hp (shaft output) motor that has an efficiency
of 91.0 percent is worn out and is to be replaced by a highefficiency
motor that has an efficiency of 95.4 percent. The
motor operates 4368 hours a year at a load factor of 0.75. Taking
the cost of electricity to be $0.12/kWh, determine the amount
of energy and money saved as a result of installing the highefficiency
motor instead of the standard motor. Also, determine
the simple payback period if the purchase prices of the standard
and high-efficiency motors are $5449 and $5520, respectively.
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