Advice 1: How to convert kW to kWh

In science and everyday life commonly used units of measurement of physical quantities like kilowatts, kilowatt-hours and hours. Each of these units corresponds to a specific physical parameter. Kilowatts measure power, in kilowatt-hours – the energy (work) and hours of time. In practice often we have to translate some values in others, for example, the power into energy. At the same time, it is also necessary to translate and the appropriate units – kWh per kW h. This translation is quite possible, if the time is known in advance or it can be calculated.
How to convert kW to kWh
You will need
  • a calculator or computer
Instruction
1
In order to convert kilowatts to kilowatt-hours (kW per kWh), verify that it is measured in kilowatts.

If the "kilowatt" was measured by a counter, and at the time of payment you are required to provide kilowatt-hours, then just fix kW per kW h. the Name "kilowatt" (kW) is often used in everyday life for the abbreviated name of a kilowatt-hour.
2
Sometimes kW per kWh must be translated to estimate how much energy the "wound" on the meter to the appliance for some time.

To calculate how many kilowatt-hours of energy will be spent by the device, multiply its capacity (in kW) and the time (in hours). If the power or the time given in other units before starting the calculations be sure to bring them to the above.
3
For example, if you want to know how much electricity will be used by the light bulb of power 100 W (watts) for half of the day, first turn the watts to kilowatts (100 watts = 0.1 kW) and night hours (0.5 days = 12 hours). Now, multiply the obtained values of power and time. Obtained: 0,1 * 12 = 1,2 (kWh).
4
Using the method described above, it is possible to estimate the power consumption of the entire apartment during the month (e.g. budget planning). Of course, you can just lay down power all the appliances and multiply this amount by the number of hours in the month (30 * 24 = 720). However, this way you will get a highly inflated estimate of power consumption. For more accurate calculations must take into account the actual average operation time of each appliance during one month, then multiply that time the capacity of this device, then put the energy usage of all devices.

For example, if one bulb 60W hanging in the entrance and reception, and the second, with 100 watts lights up the toilet and used about 1 hour a day, a month counter "cheat":

0,06 * 24 * 30 + 0,1 * 1 * 30 = 43,2 + 3 = 46,2 (kWh).

Advice 2 : How to convert kilowatt hours to kilowatts

When measurement or calculations of physical quantities using the appropriate units. To avoid mistakes, in solving problems or in practical computing all values usually result in a single system of measurement. When you need to translate the watts into kilowatts or hours to minutes, the questions usually arise. But when you want to translate kilowatt hours to kilowatts, additional information is needed.
How to convert kilowatt hours to kilowatts
You will need
  • calculator.
Instruction
1
If you need to convert to kilowatts electricity readings, which are known, are measured in kilowatt-hours is likely to do to translate is not necessary. Just rewrite the numbers from the meter display. The fact that in everyday life, the kilowatt-hours are very often referred to simply kilowatts. Do not try to explain to older people that they are wrong. Just take household kilowatts as the shortened name of the kilowatt-hours.
2
To practice to translate kilowatt hours to kilowatts is necessary in cases when you need to measure the power of the appliance, and the necessary measuring instruments no. To know the power consumption of electric appliance, record the readings of the meter. Then disconnect all appliances, including refrigerator. Then plug in the device under test and switch it on. Note the time of inclusion and after an hour disconnect the appliance (including the fridge). Record the new readings of the meter and subtract from them the previous testimony. The difference would be number of kilowatt hours (the amount of power consumed by the device) and the number of kilowatt – power (in kilowatts).
3
If you want kilowatts kilowatt hours not for an hour, and for any time period, use the following formula:RAC = Ccvc / KCH, where KKV is the number of kilowatts, Ccvc – the number of kilowatt-hours, CN is the number of hours (time during which measurements were taken).
4
For example, it is necessary to determine the average power of all electrical appliances in the apartment during the day. To do this, simply make a note of the meter readings and the time at which these readings were taken. Then exactly one day again take readings of the meter. The difference between the two readings will equal the number of kilowatt-hours. In order to translate these kilowatt hours to kilowatts, divide that number by 24 (number of hours per day) and get the average daily power consumption.

Advice 3 : How to translate W/in the hour W

When calculating the amount of electricity consumed, it is customary to use the term "kilowatt-hours". This value is the actual power consumption device power N kilowatt a number of hours X.
How to translate W/in the hour W
Instruction
1
Start to understand what kind of value you need to take into consideration. The fact that very often in the calculation of electricity the concept of kilowatt-hours and kilowatts are confusing. Although kW is power (that is, the amount consumed by the device of energy) and kilowatt-hour is the amount of time consumed per hour.
2
Please note that the data on energy consumed on the electric counter indicated in kilowatts. To convert them into watts, multiply the number of kilowatt one thousand. Thus, 1 kilowatt * 1000 = 1000 watts.
3
As watt-hours or kilowatt-hours is the amount of watts for a certain period of time, for calculations you must know for what period of time to get the figure. Divide the number of watt-hours by the number of hours for which the calculation is performed.
4
For example, you know that in the past month (30 days) consumption of electricity metering devices is 72 kilowatt/hours. Multiply this figure by a thousand. To obtain the number of watts. 68,4*1000=68400 watts/hour. Now divide the resulting figure by 720. That's the number of hours in one month (30*24=720). 68400/720=95 watts. It turns out that in the course of a month constantly burning one light bulb with a power of 95 watts.
5
Remember that the data remain approximate average character, if you produce a General calculation. It is impossible to distinguish one particular appliance. This formula does not take into account the loss of energy. To calculate power watts for a single device you need to connect it to the network in a single copy, included leaving within the hour. The resulting figure will be the desired value. For example, if the network was enabled iron. Potrebu one hour 1500 watt/hour, power consumption of this device would be exactly 1500 watts.
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