Cool Useful Power Output Formula

An electric motor consumes 100 watts a joule per second Js of power to obtain 90 watts of mechanical power.

Useful power output formula. 316613 Results and discussion. In many processes work or energy is lost for example as waste heat or vibration. In order for work to be done force has to be applied in the direction of the motion.

23 is able to provide a net power output of 724 kW with an exergy efficiency of 370. Using the efficiency equation. It is motor speed and torque the turning force of the motor.

Efficiency and power As power is equal to useful energy transferred per second another way to calculate efficiency is to use the formula. Input to the electric motor is in the form of electrical energy and the output is mechanical energy. Cp Maximum power coefficient ranging from 025 to 045 dimension less theoretical maximum 059 ρ Air density lbft3.

Output mechanical power of the motor could be calculated by using the following formula. Motors supposed to do some work and two important values define how powerful the motor is. The power factor formula can be expressed in other ways.

Efficiency fracusefulpowertransferredtotal. Note that the total mass of the counterbalanced system is 10000 kgso that only 2500 kg is raised in height but the full 10000 kg is accelerated. η efficiency.

The Power Formula is used to compute the Power Resistance Voltage or current in an electrical circuit. You can also calculate the power output if you know the torque value engine rpm by the following formula. A Find the useful power output of an elevator motor that lifts a 2500-kg load a height of 350 m in 120 s if it also increases the speed from rest to 400 ms.