How to 转换 电气 power in kilowatts (kW) to energy in kilojoules (kJ).
You can 计算 kilojoules from kilowatts and seconds, but you can't 转换 kilowatts to kilojoules since kilowatt and kilojoule units represent different quantities.
The energy E in kilojoules (kJ) is equal to the power P in kilowatts (kW), times the 时间 period t in seconds (s):
E(kJ) = P(kW) × t(s)
So
kilojoules = kilowatts × seconds
or
kJ = kW×s
求 the energy consumption of an electrical circuit that has power consumption of 3 kilowatts for 时间 duration of 3 seconds
E(kJ) = 3kW × 3s = 9kJ
