How Much Power Does the Heat Engine Generate?

AI Thread Summary
To determine the power output of the heat engine, the heat absorbed from the hot reservoir (Qh) and the heat released to the cold reservoir (Qc) must be calculated using the mass of steam condensed and ice melted. The latent heat of vaporization for steam and the latent heat of fusion for ice are essential for these calculations. The efficiency equation and work output formula can then be applied to find the net work done by the engine. The discussion highlights the need to understand the symbols in the equations and how to derive Qh and Qc from the provided data. Ultimately, the power output can be calculated by dividing the net work done by the time of operation.
kikko
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Homework Statement


The hot reservoir of a heat engine is steam at 100 Celsius while the cold reservoir is ice at 0Celsius In 1.4 hours of operation, 12 kg of steam condenses and 60 kg of ice melts.

What is the power output of the heat engine?


Homework Equations



Efficiency = 1-(Qc)/(Qh)
Wout = Qnet = Qh-Qc
/\Eth = W+Q

The Attempt at a Solution



I have no clue on where to start this one, something dealing with temperature differences and derivatives, I believe.
 
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If you have no clue try to find out what the symbols in the equations mean. What are Qc an Qh? Can you determine them from the data given (mass of steam condensed, mass of ice melted)?

ehild
 

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