1. How much power does an electric fan use?

Electric fan has become an indispensable equipment for many families nowadays, there are common exhaust fans, ceiling fans and cooling fans, these electric fans need to run for a long time in a day, take the exhaust fan as an example, you need to turn it on every time you stir-fry, it can be seen that the electric fan accounts for a considerable portion of your monthly electricity bill, so calculating the amount of electricity consumed by the electric fan is very necessary for you.

Of course, to calculate the amount of power consumed by the fan, you need to get the power consumption and running time of the fan. First of all, on the power consumption of the fan, different brands and types of electric fan power consumption are different, such as home kitchen use in general between 30W to 50W, while the hotel kitchen exhaust fan power can reach 80W to 100W, the following is the life of the common models of electric fans and their power consumption:

Want to know the power consumption of your home electric fan is actually very simple, you only need to check the instructions of the electric fan, which will provide the basic parameters of the electric fan, of course, if your electric fan instruction manual is lost, it does not matter, you can through the Alibaba such as online shopping platforms, in the brand you buy to find the one you buy, these shopping platforms will provide you with the fan’s power consumption. Power consumption.

If you want to know the working hours of electric fans, you need to pay attention to them in your daily life. According to reliable data, exhaust fans for home use generally need to work for about 3 hours, while ceiling fans and vertical fans are more affected by the seasons, and they need to run for about 10 hours in the hot summer, and basically don’t need to run in the cold winter.

In knowing the power consumption of electric fans and running hours after you can calculate how much electricity the electric fan needs to consume each year, take the kitchen exhaust fan, for example, assuming that the power consumption of your exhaust fan for 40W, the average daily need to work for 3 hours, according to the annual power consumption of the electric fan = power consumption of the electric fan × the average daily working time of the electric fan × 365, substituting the data to get the annual electric fan The annual power consumption of the electric fan is 43.8kWh.

2. What size solar system can be used to supply the fan when it is off-grid?

To calculate how large a solar system will work for your fan, you need to determine the type of solar system you have and the peak sunshine hours in your area, which are essential data.

For example, if you have an off-grid solar system, which is the most common type of solar system used in off-grid homes, and the energy conversion efficiency of an off-grid solar system is about 80%, and if you are in an area with 3 hours of peak sunlight, you can use the following formula to figure out how big of a solar system you need.

Annual power consumption of electric fan / conversion efficiency of off-grid solar system / peak sunshine hours / 365 = 50watt photovoltaic panels, it can be seen that you only need to build a small solar energy system can power your electric fan, the key is that the solar power generation of energy is free of charge, which can save a considerable amount of money for your electricity bill.

3. How to reduce the power consumption of electric fans

3.1 Choose a fan with a low energy consumption rating.

Common electric fans on the market usually have one, two and three levels of energy consumption, under normal circumstances, the higher the energy consumption level of the solar fan under the same working conditions will consume more electricity, so you should buy a low energy consumption level of electric fans, which can save you a considerable part of the electricity, but you need to pay attention to is that the lower the level of energy consumption of the electric fan may need to spend more money on the purchase, therefore you need to carefully consider the cost of the electric fan.

3.2 Clean the fan surface regularly

When the electric fan is in use or stops working, the surface of the electric fan will be attached with many dust and other impurities, especially the exhaust fan used in the kitchen, which will be attached with a thick layer of oil, which will increase the weight of the fan blades, and not only make the electric fan consume more electricity, but also damage the fan surface, which will cause losses to your economy, so you need to clean the fan surface of your electric fan on a regular basis.

Take the fan surface of the kitchen exhaust fan, you can use alkaline detergent to clean the fan surface, and then use a clean rag to dry the surface moisture, so that the fan can operate normally.

3.3 Reasonable use of electric fans

Electric fans usually have different speeds, the higher the speed, the faster the wind speed, of course, the power consumption will also increase. Therefore, you should choose the right gear according to your needs. In this way, you can enjoy the most comfortable wind speed, but also can minimize the power consumption of the electric fan, which is very necessary for you.

4. Summary

Through the electric fan power consumption formula and how to reduce the electric fan power consumption method of in-depth understanding, you can certainly in the future life of the rational use of electric fans, for you to save a sum of electricity, of course, if you are interested in solar power, you can also consult the solar energy suppliers JMHPOWER, they will actively solve the problem for you.