The lighting requirements of an industrial facility are being met by 700 40-W standard fluorescent lamps. The lamps are close to completing their service life and are to be replaced by their 34-W high-efficiency counterparts that operate on the existing standard ballasts. The standard and high-efficiency fluorescent lamps can be purchased in quantity at a cost of $1.77 and $2.26 each, respectively. The facility operates 2800 hours a year, and all of the lamps are kept on during operating hours. Taking the unit cost of electricity to be $0.105/kWh and the ballast factor to be 1.1 (i.e., ballasts consume 10 percent of the rated power of the lamps), determine how much energy and money will be saved per year as a result of switching to the high-efficiency fluorescent lamps. Also, determine the simple payback period.
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.
The lighting requirements of an industrial facility
are being met by 700 40-W standard fluorescent lamps. The
lamps are close to completing their service life and are to
be replaced by their 34-W high-efficiency counterparts that
operate on the existing standard ballasts. The standard and
high-efficiency fluorescent lamps can be purchased in quantity
at a cost of $1.77 and $2.26 each, respectively. The facility
operates 2800 hours a year, and all of the lamps are kept
on during operating hours. Taking the unit cost of electricity
to be $0.105/kWh and the ballast factor to be 1.1 (i.e., ballasts
consume 10 percent of the rated power of the lamps),
determine how much energy and money will be saved per
year as a result of switching to the high-efficiency fluorescent
lamps. Also, determine the simple payback period.
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