Comment on Power is not energy: why the difference matters [Technology Connections]
theherk@lemmy.world 6 days ago“1kW within 1hr” isn’t power. That’s energy.
“nice steady energy”? You mean nice steady power, right?
“The second is like hell hole, tons of energy but still only a little bit of power.” No. They are both precisely the same energy.
“So if you toasted a toast, that was a lot of power delivered quickly.” No. That is a lot of energy delivered quickly.
I typically wouldn’t be pedantic about this, except that this is precisely the point the video is making. These two unit types are often confused.
solbear@slrpnk.net 6 days ago
The watt is always power, not energy. I’m assuming OP here got some prepositions mixed up and meant 1 kW delivered for 1 hr. That amounts to an energy of 1 kWh.
No, they are the same power. The energy in the case where 1 kW of power is delivered for 1 hour is 1 kWh. The energy in the case of 1 kW delivered for 1 s is about 0.28 Wh.
If instead 1 kWh was transferred over the course of 1 hour, that is an average power of 1 kW (but does not have to be uniform, without more information we can’t know the power profile). If 1 kWh is transferred over the course of 1 s, that is an average power of 3.6 MW which is the example I think OP was getting at (ref. hell hole comment).