Power consumption divided by computing power
Power calculation formula: 1. P = w / T (average power) 2. P = FV; P=Fvcos α Instantaneous power)
because w = f (f force) × S (s displacement) (the definition of work), so the formula of power can also be derived P = f · V:
extended data:
power economy:
1. The unit of apparent power is KVA, which is used to express the capacity of transformer and UPS in China
The active power is 0.8 times of the apparent power, and the unit is kW The rated power of diesel generator set refers to the power that can run continuously for 12 hours The maximum power is 1.1 times of the rated power, but it can only be used for one hour within 12 hours The economic power is 0.75 times of the rated power, which is the output power of diesel generator set that can run for a long time without time limit. At this power, the fuel consumption is the lowest and the failure rate is the lowestif you exclude the power consumption, the high-end single chip computing performance has already exceeded the CPU speed.
Horsepower is a unit of power. The conversion between them is 0.73, that is to say, when you know the power, the number obtained by dividing power by 0.73 is horsepower. For example, if the power is 73 kW, its horsepower is 100 hp
The calculation formula of power is: P = w / T = UI
power refers to the amount of work done by an object in unit time, that is, power is a physical quantity describing the speed of work. The amount of work is fixed, the shorter the time, the greater the power value. The formula of power is power = work / time. Power is a physical quantity that represents the degree of work done. The work done per unit time is called power, expressed in P. So the power is equal to the scalar proct of the force and the velocity of the force point
In the series circuit (I1 = I2), P1: P2 = U1: U2 = R1: R2 = W1: W2in the parallel circuit (U1 = U2), P1: P2 = I1: I2 = R2: R1 = W1: W2
various terms
power is the physical quantity that indicates the speed of work done by an object. In physics, power P = work J / time t, in watts, The power units that we often see in the media include kW, PS, HP, BHP, whpmw, etc., as well as CV used in Italy before. Here, kW is the international standard unit, 1kW = 1000W
in the car, the biggest power machine is the engine, the power of the engine is calculated by the torque, and the calculation formula is quite simple: power (W) = 2 π× Torque (nm) × Speed (RPM) / 60, after simplified calculation: power (W) = torque (nm) × Speed (RPM) / 9.549
Definition of work: if an object is affected by a force and has a displacement in the direction of the force, we say that the force has done work on the object
Calculation formula of work: w = f * s (where W is work, f is force, s is the distance in the direction of force)definition of power: power refers to the amount of work done by an object in unit time, that is, power is a physical quantity describing the speed of work
Calculation formula of power: P = w / S = f * V (where p is power, W is work, s is distance, f is force, V is velocity)
extended data:
in one-dimensional motion:
1
If the resultant force on the object is f, and the displacement direction of the initial motion and the final motion is the same as F, then the total work of the object is greater than zero If the resultant force is f, and the displacement direction of initial motion and final motion is opposite to F, then the total work of the object is less than zero Note: there is a difference between the total work and the work of a certain forcepower measurement is used to measure the power consumption of electrical equipment, which is widely used in research and development or proction lines of household appliances, lighting equipment, instrial machines, etc
There are four ways to measure power:(1) diode detection power method
(2) equivalent thermal power consumption detection method (3) true RMS / DC (TRMS / DC) conversion detection power method (4) logarithmic amplification detection power methodthe power consumption of desktop computer is about 300 watts, and the power consumption per hour is about 0.3 degrees
TV depends on the type of TV, the size of the screen, and the power consumption. If the screen is large, the power consumption will be large. If the screen is small, the power consumption will be small. A traditional CRT TV has a 29 inch power of about 120 watts. The power of the large screen flat-panel TV is much more than 400 watts
refrigerators are the same, with different capacity and power consumption. The power of an ordinary two door refrigerator is about 100 watts
the power of the hair dryer is generally about 1000 watts
for the calculation of current, the power divided by the voltage of 220 V is the working current, which can be calculated according to the power on the electrical appliance label or manual
the power consumption is calculated by one kilowatt hour.