CAN WE USE AC AND CEILING FAN TOGETHER?
From Superfan, India’s first super energy efficient ceiling fan
Yes! Using AC and ceiling fan together is bound to give advantages to us in power savings and eco-friendliness.
Air conditioning (AC) is currently the most effective method of cooling indoor space. However, its growing global use is problematic for a variety of reasons.
- Typically, a 1-ton AC consumes more than 800 W per hour. Widespread use of air conditioning puts a strain on the electricity distribution system and raises the risk of power shortages.
- Through heat ejection, air conditioning contributes to the Urban Heat Island (UHI) effect, which affects the outdoor thermal adaption of people on the streets. An urban or metropolitan area becoming considerably warmer than their surrounding rural areas due to human activities is called the Urban Heat Island (UHI) effect.
- Elevated urban temperatures, including UHIs, can strengthen and exacerbate heat waves, leading to increased AC electricity consumption at night.
- The growing use of air conditioning, combined with global trends in urban and building design, has increased urban heat vulnerability and greenhouse gas emissions.
- People are becoming more physically and mentally reliant on cooling, making them more vulnerable to rising urban temperatures.
- People who spend a major of their time in air conditioning have a greater risk of losing their thermal adaptability.
The energy consumption of ACs are higher because it changes the temperature of the whole space. This may not be needed at all cases, as in certain cases it is sufficient to keep the occupant thermally comfortable. The change in the objective opens up combined options for thermal comfort, one such solution is using AC in combination with ceiling fan.
Ceiling fans offer thermal comfort to the occupant by utilizing the phenomenon of evaporative cooling. This cooling effect gives the feel of a lower temperature than the actual temperature of the space around. So, if ceiling fans are used with the ACs, then the set temperature can be higher than the needed comfort temperature and still the occupant can enjoy the thermal comfort that is desirable.
Why BLDC ceiling fans are the best for this combination solution?
Lower energy consumption
The energy consumed by BLDC ceiling fans are comparatively lower than AC’s and regular AC induction ceiling fans. Energy efficient ceiling fans consume 35 W or lesser, while other space cooling systems consumes more than 80 W. Superfan being the technology leader of the Indian ceiling fan industry has the most energy efficient ceiling fan India that consumes only 25 W, which is significantly better than other BLDC ceiling fans. At the second speed setting Superfan ceiling fan consumes around 7 W compared to 25 W by a regular ceiling fan.
Less heat generation
BLDC ceiling fans generate 70% less heat than regular ceiling fans with AC induction motor. The excess heat from regular ceiling fans will induce the AC to run longer to lower the temperature.
Energy efficient BLDC ceiling fans can contribute to more savings in the combination solution.
Energy efficient BLDC ceiling fans supplements AC operation
How to use this combination solution?
People usually prefer 24°C comfort and it has been deemed as the healthy setting on an AC. In this combination solution, to achieve the 24°C comfort, the AC can be set at 27°C and BLDC ceiling fan at 2nd speed to deliver 24°C comfort combinedly. The energy savings of one-degree higher setting on an AC is about 5 %, so this offers about 15% energy saving. The additional energy consumption of BLDC ceiling fans at 2 nd speed is negligible compared to the AC.
So, using a BLDC ceiling fan with AC’s minimizes the electricity consumption while maintaining the same desired thermal comfort.
This solution is possible because ceiling fans provide a breeze effect to fasten your body cooling by the phenomenon of evaporative coolingbesides the convectional cooling effect provided by the AC.
Additionally this solution reduces the UHI effect, since the heat dissipated from AC’s will be lower than before and for shorter duration.