500W in kwh
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500W in kWh
If we have a device with a power of 500W, how do we convert it into kWh to know its power consumption over a period of time? This article attempts to introduce the calculation method of converting 500W in kWh.
Understand Watt and kWh
To convert 500W in kWh, you first need to know the meaning of the two units Watt and kWh. Let’s first give an easy-to-understand example:
Suppose there is a water tank that is empty at the beginning. A water hose is filling the tank with water for 10 seconds, so there are 10L (Liter) of water in the tank.According to this scenario, we can know several key values:
Water Volume = 10L
Water Flow Rate = 10L/10Seconds= 1L/Second
It is easy to understand here. So let’s think about it this way. The parameter power in Watt can actually be understood as the water flow rate, and the power consumption in kWh can be understood as the water volume. This means that the power in Watt is used to measure the average amount of electricity consumed by the electrical equipment per second. And the power consumption in kWh can be understood as how much electricity the device consumes in total after one hour.
To summarize, the conversion between water volume and average water flow rate requires a time parameter. The same is true for power in watt and power consumption in kWh. kWh to W conversion requires a time parameter.
According to the above figure, let’s understand it visually. We have a machine that runs for 3600 seconds, and the final power consumption is 1kWh, and its average power is 1000W. Here, average power is the water flow rate in the previous example, and used electricity or power consumption is the water volume in the previous example. The following is the calculation relationship between them:
Power Consumption(kWh) = Average Power(In kW Unit) * Time( In Hour Unit)
Please note that the confusing part is often the units. This calculation formula is very simple, but please pay attention to the kWh unit. If we break it down, it is killo Watts Hour, right? So the average power in the calculation formula is in kW instead of watt. 1kW = 1000 Watt. The time in the formula is in hours instead of seconds. We know that one hour is equal to seconds. 1hour=3600 seconds.
Based on this understanding, let’s look at the relationship between the parameters in the previous case.
Average Power in kW = Average Power in Watt/1000 = 1000W/1000 = 1kW
Time in hour = Time in seconds/3600 seconds per hour = 3600 seconds/ 3600 seconds per hour = 1hour
Power Consumption(kWh) = Average Power(In kW Unit) * Time( In Hour Unit)
= 1kW*1hour
= 1kWh
500W in kWh Conversion
Based on the basic knowledge we discussed earlier, we can now solve the problem of 500W in kWh conversion.According to our previous explanation: Power in Watt is used to measure the average amount of electricity consumed by the electrical equipment per second. And the power consumption in kWh can be understood as how much electricity the device consumes in total after one hour. So the conversion between them actually lacks the element of time. So we need to add the assumption of time:
500w, 1 hour, how many kWh of electricity is needed?
Let’s take out the formula in the previous chapter to see how to solve this problem:
Power Consumption(kWh) = Average Power(In kW Unit) * Time( In Hour Unit)
500W in kW Conversion = 500W/1000 =0.5kW
We already know that the 500W device runs for 1 hour. Substituting it into the formula, we can get the conversion:
Power Consumption(kWh) = Average Power(In kW Unit) * Time( In Hour Unit)
= 0.5kW*1hour
= 0.5kWh
So 500W devices run 1 hour need electricity 0.5kWh, thus we finished the 500W in kWh conversion.
Summary
To summarize, kWh to W conversion is confusing if we don’t understand the concepts between the two. They need time parameters to link them together. Please read this article again if necessary, or contact us by email if you have any questions.
