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inverter air conditioner the energy consumption of fans vs. air conditioners | ehow

by:KEBO      2019-10-08
The fan cannot match the original cooling power of the air conditioning unit, especially in a warm climate, but the air circulation provided by the ceiling fan or the whole house fan can make the house feel very cool, just a fraction of the energy cost of the central air-conditioning unit.
The power consumption of ceiling fans varies greatly depending on the fan design and speed setting.At low speed, the fan uses 15 to 30 watts, and at high speed, the fan consumes 50 to 100 watts;At medium speeds, energy usage of about 40 watts is typical.When used with air conditioning, ceiling fans may allow you to set the thermostat at a higher temperature and remain comfortable, reducing your overall energy consumption.However, the ceiling fan motor generates heat, which can cause your air conditioner to work harder, which will offset some savings on your energy bill.
The central air conditioner consumes even more power than a few ceiling fans add up;Typical Central AC energy consumption is between 2,000 and 5,000 watts per hour.A smaller window unit consumes less power-It takes about 1,200 watts for a unit that needs 12,000 British heat units--But it won't cool your whole house.However, the air conditioner uses all the extra energy to cool the air at home;The fan only cycles the air and generates current that will help you feel cool when heat is discharged from your body.
The fan of the whole house is usually installed in the attic, aiming to move the relatively cool external air in through the open window and discharge the warm indoor air through the attic vent.Fans throughout the house use about 90% less power than central air conditioning, and they can effectively cool your home when the outdoor temperature is not very high.The other end of the scale is a portable bench-top fan, which has limited capacity to generate cooling airflow but consumes only 10 to 25 watts of power.
The energy efficiency rating allows you to compare the relative efficiency of air conditioners and fans.The energy efficiency rating of the air conditioner is seasonal.SEER is calculated by dividing the cooling output of the air conditioner in Btu by the energy consumption in Watts;SEER receives the United States for 14 or higher unitsS.Energy Star rating by Doe.Ceiling fans may also receive Energy Star ratings if they meet airflow and energy efficiency standards;For example, to obtain a rated power, the fan must move at least 3,000 cubic feet of air per minute at a medium speed, with an efficiency of 100 cubic feet per minute.
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