- #1
Martinii
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[SOLVED] Power plant
Hi! Here i have a problem : A power plant generates 400 MW of electric power.It has an effieciency of 40%.
a) At what rate does it dissipate heat?
b)If the waste heat is carried away by a river, and the temperature rise of the river must not exceed 3°C, what flow rate is required in the river?
Here is what i have tried:
a)
Pel=400 MW
η=40%=0.4
Pth=Pel/η=1000 MW
b) Pwaste=W/t Q=W=m*c*ΔT m=ρ*V
Pwaste=(ρ*V*c*ΔT)/t V/t= Volume Flow = V°= Pwaste/(ρ*c*ΔT)
Pwaste= Pth-Pel=600 MW and then calculations
I am not quite sure whether this way is correct or not.I will be happy if someone can tell me his opinion.
Hi! Here i have a problem : A power plant generates 400 MW of electric power.It has an effieciency of 40%.
a) At what rate does it dissipate heat?
b)If the waste heat is carried away by a river, and the temperature rise of the river must not exceed 3°C, what flow rate is required in the river?
Here is what i have tried:
a)
Pel=400 MW
η=40%=0.4
Pth=Pel/η=1000 MW
b) Pwaste=W/t Q=W=m*c*ΔT m=ρ*V
Pwaste=(ρ*V*c*ΔT)/t V/t= Volume Flow = V°= Pwaste/(ρ*c*ΔT)
Pwaste= Pth-Pel=600 MW and then calculations
I am not quite sure whether this way is correct or not.I will be happy if someone can tell me his opinion.