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Fans can have any number blades--even one! (but then you need a counterweight for balance). There are airplanes that have one blade for a propeller. There are many variables that figure into how many blades a fan has. Air velocity, noise, shape of the blade, length of the blade, material cost, vibration, etc. For airplanes sometimes they change 2-bladed propellers for three or four or more to get different flying characteristics.
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∙ 16y ago
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∙ 14y agoThree bladed ceiling fans are mostly modern and have three blades for the modern look. Most ceiling fans have five blades. Many have six and some have 4. Also there is a one bladed ceiling fan made by Fanimation Ceiling Fans.
http://www.rlights.com
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∙ 12y agowell its normally defined as MODERN FAN tats y it has 3 blades but i guess the word fan has three blades becaz it consists of 3 alphabets F A N.. guess that's is y it has 3 blades... lol..... cheers...
Wiki User
∙ 13y agoThis is not necessarily true. The number of blades on a fan has nothing to do with efficiency, making any number a matter of personal taste, rather than a purely practical consideration. The performance of a ceiling fan is determined by only 4 factors:
1. Motor speed (revs per minute).
2. Blade design & pitch (angle the blade is set at).
3. Distance between fan blades and ceiling.
4. Distance between blade ends and walls.
You could have any number of blades, and still achieve the same effect.
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∙ 14y agopersonal preference, aesthetics's. It only needs one but would be unbalanced, two is the practical minimum
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∙ 12y agobecause it just does
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Why fans have three wings?
Actually some have more than 3. Three is the minimum to keep things balanced. With 1 or 2 blades, the fan will tend to wobbel depending on geometry and material used. IE there are 1 and 2 foam blades used on hand held sprtitzer devices that tourists carry around. Since the weight is minimal and cost is essential, it works. However for home ceiling fans, its important to have 3-5 blades. Generally the 5 blade fans have longer blades and are used for large rooms that nee more air pushed.
Internal circuit components of a ceiling fan?
The most important parts of the fan are- 1. Motor (Stator and Rotor) 2. Capacitors 3. Triple Capacitors (to control the voltage entering the motor) 4. Reverse Switch
How tall is 3 stories?
It varies. Some have 8 foot ceiling with 1 foot floors=9 foot some have 8 foot ceiling with 2 feet floors=10 feet
A fan running at 1250 rpm and one running at 1750 rpm what giving delivering more cfm's?
1. ASSUMING AIR DENSITY AND FAN BLADE DIAMETER IS CONSTANT OR THE SAME --THE LATTER (1750 RPM) DELIVERS MORE CFM WHETHER BELT DRIVEN OR DIRECT COUPLED -- SAME HP RATING OF MOTOR. 2. 1250 RPM FAN CAN MATCH THE CFM OF 1750 RPM FAN --- CHANGE OR ADJUST THE PITCH OF 1250 RPM FAN BLADE. 3. 1250 RPM FAN CAN DELIVER MORE CFM THAN THE 1750 RPM FAN --- REPLACE FAN BLADE. 4. 1250 RPM FAN CAN DELIVER MORE CFM THAN THE 1750 RPM FAN --- REPLACE WITH BIGGER HORSE POWER.
Four methods for controlling head pressure in an aircooled condenser are?
fan cycling.3 way modulating valve
What will happen if the ceiling fan contains seven blades?
it will make fan heavy and thus consume more power as compare to 3 blades fan
Why does a fan has odd number of wings?
A fan does not have to possess an odd number of blades. The can have any number from two on up. Ceiling fans typically have 3 to 5 blades, with four being extremely common.
Does a 5-blade ceiling fan provide more air movement than a 3-blade fan?
This would generally depend on the size of the fan blades in question as well as the rating of the fan motor. 3 large blades can move as much air as four or five smaller blades. The question is similar to asking, is a big car faster than a small car.
What is the distance between the fan and ceiling?
I've a 4 ft diameter ceiling fan with 3 blades of std width (about 3") hanging at a distance of 9" from the ceiling. Floor to ceiling distance is 8'5". Problem is that when I stand at a distance of about 3 to 4 feet from the centre of the fan - there is no air-flow. So, area covered by fan is 8 ft dia (max). If I stand beyond 8 ft dia circle there is hardly any air flow. Same fan in another room is hanging at a distance of about 12" to 13" and it's covering area 12 ft dia on the floor with a reasonable air-flow. It seems that there is some co-relation between height of fan from ceiling and area covered below it. Any idea? The distance from the ceiling is of little importance unless ceiling is very tall. Size of fan, width of blades makes the difference. Pitch of the blades The angle, or pitch, of each ceiling fan blade is also a determining factor in how efficient a ceiling fan will be. The angle of the blade affects the amount of wind resistance and the fan's ability to blow the circulated air downward. You can find more info on this website: http://www.ceiling-fan-wizard.com/ceiling-fan-blades.html
What is the difference between fans with 3 and 4 blades?
nothing a fan with three blades is just weaker and smaller than a fan with four blades! <3
How do you fix your slow ceiling fan?
1) clean the ball-bearings 2) change the capacitor 3) clean the blades 4) lubricate the ball-bearings that will do the job, if not then there is problem with the motor.
Ceiling Fans?
form_title= Ceiling Fans form_header= Stay cool with a ceiling fan! What is the size of the room where the ceiling fan will be installed?* = _ Are there already electrical wires installed for the ceiling fan?* () Yes () No () Not Sure What color do you want the ceiling fan?* = _
A part number 85112-02?
85114
How far down from ceiling do you hang a fan if ceiling is 11 feet high?
The same height as the downrod is. Don't buy a low profile or flush mount ceiling fan, because these are specially designed for places where the ceiling is less than eight feet high. I would suggest you buy a traditional ceiling fan or a industrial ceiling fan. Industrial ceiling fans are specially designed for high and big places. For more info about this: http://www.ceiling-fan-wizard.com
How is a rotating fan unlike a atom?
One key thing if you are talking about the blades and the electrons. The blades of a fan revolve in a circle. However, the movement of an electron is within a sphere or other 3 dimensional paths
Why do fans have 3 wings?
An electrical fan can have two, three or four blades. The main thing is that the number of blades must be balanced to avoid juddering.
Ceiling Fan Installation ?
Ceiling fans can be beautiful and enhance the value of your home. They also go a long way in cooling your home and keeping utility bills low. If you know nothing about ceiling fan installation then consider a professional electrician as the wiring could be tricky. If you know a little about wiring, the you can do it yourself. Pay attention to how the old ceiling fan is wired and replicate it whenever possible. Be sure to secure the fan firmly to the hanging bolts. Also make sure that your ceiling fan is the right size for the dimensions of your room.
