消耗的电能:=220r ÷6400r/(kWh) = 220/6400 kWh = 0.034375 kWh = 123.75kJ
水的比热容是 4.2kJ/(kg℃)
Q=△m × Cp ×△T
△m = Q÷Cp÷△T
= 123.75 kJ ÷ 4.2kJ/(kg℃)÷ 10℃
= (123.75÷42) kg
= 2.946 kg
消耗的电能:=220r ÷6400r/(kWh) = 220/6400 kWh = 0.034375 kWh = 123.75kJ
水的比热容是 4.2kJ/(kg℃)
Q=△m × Cp ×△T
△m = Q÷Cp÷△T
= 123.75 kJ ÷ 4.2kJ/(kg℃)÷ 10℃
= (123.75÷42) kg
= 2.946 kg