@PotatoClose @PSQ17266 @Kit_Yates_Maths Also, the 500 KWh/y estimate on that site is absurdly high, at least for a classroom. Maybe for 24x7 but classroom time is about 1000 hours per year, so that's <100 KHW/year per cleaner. Cost is just very low. It really is.
@PotatoClose @PSQ17266 @Kit_Yates_Maths 此外，该站点上 500 KWh/y 的估计值高得离谱，至少对于教室而言。也许是 24x7，但课堂时间大约是每年 1000 小时，所以