How much work does an elevator motor do to lift a 1000 kg elevator a height of 100 m B How much power must the motor supply to do this in 50’s at constant speed?
Problem : An elevator must lift 1000 kg a distance of 100 m at a velocity of 4 m/s. What is the average power the elevator exerts during this trip? The work done by the elevator over the 100 meters is easily calculable: W = mgh = (1000)(9.8)(100) = 9.8×105 Joules.
How many HP is an elevator?
Typical horsepower requirements are 15 to 50 HP. There are several factors that contribute to a good elevator drive. The predominant requirement for a good elevator is smooth operation without any jerky movement.
How is power calculated in an elevator motor?
Assuming you mean a tonne – ie a metric tonne, 1000kg – the energy required to lift one tonne to a height of one meter is given by the equation 'mgh' – mass times the acceleration due to gravity times the height, so that's 1000 * 9.8 * 1, or 9,800 Joules.
How do you calculate elevator load?
Calculating the Weight of a Load
- Step 1: Determine the Volume of the Load. Rectangle/Square: Volume = Length x Width x Height. …
- Step 2: Determine the Material You'll Be Lifting. The table below can be used for approximate weight values of common loads and materials: …
- Step 3: Determine the Weight of Object.
Nov 29, 2018
How do you calculate motor selection?
Divide the motor speed by the required speed and round down to get a starting gear ratio. Then divide the required torque by the gear ratio to find the newly required torque. This will help you narrow the choices down to a few select motors.
How many kW is a lift motor?
Elevator Operating Motor, Power: 3.7 kW.
How do I calculate motor power to lift 150 kg?
There are two formula;
- P = (T × N) /9550.
- P = (F × V) / 1000.
How many watts does it take to lift 1kg?
If you can keep lifting a 1 kg weight to a height of 1 meter every second, weight after weight after weight, then you will be steadily producing 10 Watts of power.
How do you calculate load?
Multiply the mass of the object by the gravitational acceleration of the earth (9.8 m/sec2), and the height in meters. This equation is the object at rest's potential energy. Potential energy is measured in joules; this is the load force.
How do you calculate the force of a motor?
To calculate the force required to move the object: F = m * g *u , F = force, m = mass of object, g = gravity constant, u = friction. F = 500 kg * 9,82m/s2 * 0.8 F = 3924 N to push the object.
How do I calculate motor power?
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.
How many KW is an elevator?
According to figures provided by elevator manufacturer Kone, a typical hydraulic elevator in a three-story office building uses 3,800 kilowatt-hours per year, or about as much as the average American home uses in four months.
How do you calculate the power of a lift motor?
Hoist motor power is calculated by: P = M.g.v/n. M = Mass. g = Gravity….In order to calculate the hoisting power, you need these parameters:
- weight of the hoisting m.
- speed of the hoisting v.
- mechanical efficiency (gearbox, wire drum, sheaves) η
May 3, 2015
How do you calculate the lifting load of a motor?
0:1213:17Lifting Heavy Loads Using a Geared, Motor Driven Hoist – YouTubeYouTube
How is lifting work calculated?
Lifting an object near the surface of Earth. In order to lift an object of mass m so that its height increases by a distance h, you have to exert an average force mg through a distance h. The work you have to do lifting the object is W = mgh.
How do you calculate lifting power?
0:552:29Energy, Work & Power (26 of 31) Time to Lift Object with Known Mass and …YouTube
How do you calculate effort needed to lift a load?
To calculate the effort required to lift the load we divide the load by the number of ropes (do not count the rope that goes to the effort).
How do you calculate the force of a DC motor?
The direction of the force is determined by the Fleming's left hand rule as illustrated in Figure 2. The direction of the force generated by the magnetic field is perpendicular to both the direction of the current and the field….DC Motor Calculations—Part 1.
| SI | English |
|---|---|
| 1 N-m = 141.61 in-oz | 1 in-oz = 7.062E-03 N-m |
•Apr 21, 2017
How do you calculate work?
The formula for calculating work is Work = Force x Distance . Hence, to calculate the distance from force and work, proceed as follows: Determine the work done, W , when the force, F , is applied. Divide the work done, W , by the applied force, F .
How do you calculate the power of an electric motor that can lift 800 kg?
Given m= 800 kg, h = 1500 cm = 15 m, g = 10 m/s^2 and t = 20 s. W = 120000 J. P = 6000 W. Thus, the power of an electric motor to store the water is 6000 W.
How do you calculate the power consumption of a lift?
one unit costing 7–10 Rs. is 1 kwh. So if a 3.75 kw motor runs for 1 hour it will consume 3.75 units of electricity. To run 1 hour the lift can make 240 trips one way for 4 floors or it can go up and down 120 times.
How much power does it take to run 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 you calculate lift?
The lift equation states that lift L is equal to the lift coefficient Cl times the density r times half of the velocity V squared times the wing area A. For given air conditions, shape, and inclination of the object, we have to determine a value for Cl to determine the lift.
What is work done formula?
To express this concept mathematically, the work W is equal to the force f times the distance d, or W = fd. If the force is being exerted at an angle θ to the displacement, the work done is W = fd cos θ.
How do you calculate work done by effort?
The Work done by effort formula is defined as the product of force and the magnitude of the displacement is calculated using Work done = Load*Displacement. To calculate Work done by effort, you need Load (W) & Displacement (d).
What is the effort formula?
Effort = f (influencing variables, correlation coefficients), which expresses the effort as function of influencing variables or factors and certain correlation coefficients.
How do you calculate motor?
2:5419:33Motor Load Calculations – YouTubeYouTube
How do you calculate work and power?
Power is equal to work divided by time. In this example, P = 9000 J / 60 s = 150 W . You can also use our power calculator to find work – simply insert the values of power and time.
How do you find the work done by a force?
Work is done whenever a force moves something over a distance. You can calculate the energy transferred, or work done, by multiplying the force by the distance moved in the direction of the force.
How many amps does an elevator use?
Each residential elevator requires three (3) items from your electrician and telecommunications contractor(s). They are as follows: 1. One (1) 120V 15 Amp Fused Disconnect or Circuit Breaker, as outlined, for cab lighting.