Oblicz w stopniach Celsjusza temperaturę chłodnicy silnika o sprawności 75 setnych jeżeli temperatura grzejnicy wynosi 937 stopni Celsjusza.
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dane:
η = 0,75
t₁ = 937°C
T₁ = (937+273)K = 1210 K
szukane:
T₂ = ?
t₂ = ?
η = (T₁-T₂)T₁ I*T₁
T₁-T₂ = η·T₁
T₂ = T₁-ηT₁
T₂ = 1210K - 0,75·1210K = 1210K - 907,5 K
T₂ = 302,5 K
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t₂ = (302,5-237)°
t₂ = 29,5°C
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