How do you calculate the power of an elevator motor?

How do you calculate the power of an elevator motor?

The work done by the elevator over the 100 meters is easily calculable: W = mgh = (1000)(9.8)(100) = 9.8×105 Joules. The total time of the trip can be calculated from the velocity of the elevator: t = = = 25 s. Thus the average power is given by: P = = = 3.9×104 Watts, or 39 kW.

How do u calculate force?

Learning the Formula. Multiply mass times acceleration. The force (F) required to move an object of mass (m) with an acceleration (a) is given by the formula F = m x a. So, force = mass multiplied by acceleration.

How much weight can a 1 hp motor lift?

This means with 1 hp, you can lift about 550 lbs (250 kg) at a rate of 1 ft/sec, 1100 lbs at a rate of 0.5 ft/sec, 225 lb at a rate of 2 ft/sec, 1 lb at a rate of 550 ft/sec, and so on.

How much power is needed to lift a weight?

Lifting Weights: On earth it takes about 10 Newton-meters (N-m) of energy to raise a 1 kilogram mass to a height of 1 meter. Since 1 N-m equals 1 Joule, that’s 10 Joules. If it takes 1 second to lift the weight 1 meter, than you have converted 10 Joules of energy to potential energy in one second.

How do you calculate the power needed for a motor?

A watt (W) is a unit of power defined as one Joule per second. For a DC source the calculation is simply the voltage times the current: W = V x A. However, determining the power in watts for an AC source must include the power factor (PF), so W = V x A x PF for AC systems.

What is the power of an elevator?

The elevator controller uses about 83 watts all the time, even when the elevator is idle. That’s about $130 per year without even moving! Going up uses almost 40 times as much power as going down. Going up 5 floors uses about 500 kilowatt seconds and costs about $0.03.

How do I calculate friction?

How to find force of friction

1. Choose the normal force acting between the object and the ground. Let’s assume a normal force of 250 N .
2. Determine the friction coefficient.
3. Multiply these values by each other: (250 N) * 0.13 = 32.5 N .
4. You just found the force of friction!

How do you calculate the power output of an engine?

The equation to calculate horsepower is simple: Horsepower = Torque x RPM / 5,252. You can use our horsepower calculator below to try it out yourself.

How do you calculate power from voltage and current?

Electrical power is the product of voltage and current. P=VXI. P = V X I .

What is the maximum efficiency of a 10 hp motor?

Maximum efficiency is usually near 75% of rated load. Thus, a 10-horsepower (hp) motor has an acceptable load range of 5 to 10 hp; peak efficiency is at 7.5 hp. A motor ’s efficiency tends to decrease dramatically below about 50% load.

How much power does an electric motor need to run?

Most electric motors are designed to run at 50% to 100% of rated load. Maximum efficiency is usually near 75% of rated load. Thus, a 10-horsepower (hp) motor has an acceptable load range of 5 to 10 hp; peak efficiency is at 7.5 hp. A motor ’s efficiency tends to decrease dramatically below about 50% load.

What is an acceptable load range for an electric motor?

Reasons to Determine Motor Loading Most electric motors are designed to run at 50% to 100% of rated load. Maximum efficiency is usually near 75% of rated load. Thus, a 10-horsepower (hp) motor has an acceptable load range of 5 to 10 hp; peak efficiency is at 7.5 hp. A motor ’s efficiency tends to decrease dramatically below about 50% load.

How do you estimate motor loads?

Motor part-loads may be estimated through using input power, amperage, or speed measurements. This fact sheet briefly discusses several load estimation tech- niques. Most electric motors are designed to run at 50% to 100% of rated load. Maximum efficiency is usually near 75% of rated load.