The difference between W kW kWh
When the solar system Have a role in the present With the price of solar cells that are cheaper every watt every day Is a factor for many people to turn to use solar cell systems more Therefore need to know the distribution of Kilowatts and kilowatt hours and megawatts Commonly used
- watts (watt, W) is the SI unit of power named after James Watt. For example, the power in watts, for example, a home-based light bulb used 100 watts.
1 Watt is equal to 1 joule of energy per second.
1 W = 1 J / s = 1 Nm sec 1 KG · the m = 2 · s, -3.
- Kilowatts (kW) It is watts x 1,000.
- Kilowatt hours (kWh) is the amount of energy used at the rate of 1,000 watts for 1 hour or 1 power unit.
For example, turn on 1 100 watts of electricity per bulb for 10 hours in total 100 × 10 = 1,000 watts = 1 unit. 10 100-watt bulbs for 1 hour, total 100 × 10 = 1,000 watts = 1 unit is the same
In the example, if we use 1 unit of electricity, the output is from Watthour Meter is an electromagnetic induction meter that is built to be used as a household power meter. In industrial plants and other places that require electricity By measuring electrical power into Kilowatt hour (Kilowatthour: kWh)