Full Load Torque — Full load torque is the torque neces- sary for the motor to produce its rated horsepower at full load speed. In lb-ft it is
equal to the rated horsepower times 5252 divided by the full load speed in rpm
.
What is the torque of a fan?
Torque is the
twisting force supplied by a motor to a fan
. In fan applications, the motor must supply a substantial amount of torque before it will even start to turn. In the English system, the standard units of torque are pound inch (lb-in) or pound feet (lb-ft).
How is torque rating calculated?
To calculate load torque,
multiply the force (F) by the distance away from the rotational axis, which is the radius of the pulley (r)
. If the mass of the load (blue box) is 20 Newtons, and the radius of the pulley is 5 cm away, then the required torque for the application is 20 N x 0.05 m = 1 Nm.
How is electric motor torque calculated?
Multiply the horsepower by 5,252
using a calculator. Using the example figure, multiply 0.6434316 by 5,252 to get 3,379.3027. Divide the answer by the motor’s rated number of rpm to get the measurement of the torque in pound-feet.
How is fan work calculated?
Take the number of amps and use the number 120 to multiply
. The number 120 is used because it is the average amount of volts (electric pressure) that most appliances have. It is a simple equation. For example, if the amps are 0.6, multiply it by 120 – 0.6 x 120 = 72 fan watts.
Is 400 ft lbs of torque a lot?
Having 400 pounds of torque
down low
means you have more horsepower down low. Having 400 pounds of torque up high means you have even more horsepower then you had down low.
How much torque does a 1 hp motor have?
The 3600 RPM, 1HP motor produces
1.5 ft. lbs.
of torque at 3600 RPM. So if your 1HP pump was operating at 1800 RPM, the 1800 RPM motor would be producing 3 ft.
How much torque is required to move a car?
The answer to your question is
43.2 Nm
of Torque required that can be obtained with the transmission ratio value of 15.
Do electric motors have more torque?
That’s possible because at lower speeds,
electric motors deliver more torque than gas engines
. “Torque is what you need to get a car going,” says Grace, and with more of it, electrics out-accelerate comparable gas engines.
How do you check motor torque?
A relatively simple method to estimate electrical motor torque is
to measure its electrical power input, the voltage and the current in the power line driving the motor
. For most motors, torque is directly proportional to the current and can be derived from it by knowing shaft speed and motor efficiency.
How efficient is a fan?
Fan efficiency is defined as
the air power divided by the fan input power
. … range of efficiencies depending on the airflow and pressure of the operating point. For example, a fan with a peak efficiency of 70% can easily be selected to operate at a point of only 50% efficiency.
How is fan BHP calculated?
BHP
= Q x SP /
(6356 x Fan Ef f.)
How much power does a fan consume per hour?
We went shopping online and found typical box fans range from
40-100 watts
. At the midpoint, 70 watts, if a kilowatt costs 10 cents per hour, the fan would cost 0.7 cents per hour (0.07 kwh x 10 cents).
What is better hp or torque?
Torque, simply, is the ability of a vehicle to perform work — specifically, the twisting force applied by the crankshaft. Horsepower is how rapidly the vehicle can perform that work. … Because there is generally a limit on how fast you can spin an engine, having
higher torque
allows for greater horsepower at lower rpms.
Does higher torque mean better towing?
To sum up,
torque plays a greater role in towing than horsepower
. This is because of the ‘low-end rpm’ generated by the higher levels of torque, which allows the engine to easily carry heavy loads. A high torque vehicle will be able to tow trailers or other objects with an extremely low value of rpm.
Does higher torque mean faster acceleration?
A car with
more hp than torque will always be quicker
since this gives a car acceleration and speed. … This is why low-end torque becomes important for better acceleration in many scenarios. Higher torque doesn’t mean one vehicle will necessarily be faster than another, though.
