Odpowiedzi

2010-03-27T09:59:45+01:00
P=2,5kW
t=20min=1200s
Wu=0,48MJ
η=?
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Wc=P*t=2,5Kw*1200s=3000kJ=3MJ
η=Wu*100%/Wc=0,48MJ*100%/3MJ=16%