The average shower head pumps out about 10 liters per minute.
2x 10minutes x 10L = 200L per day.
To heat 200L of water from 15 degrees C to 40 degrees will take:
= 25c x 200 000 = 5,000,000 calories,
= 4.184 x 5,000,000 = 2.09 x 10^7 joules
= (2.09 x 10^7) / (3.6x10^6) = 5.81 kWh per day.
= 5.81 kWh x 30 days = 174kWH per month just from shower作者: kei 时间: 2013-10-28 13:35:21