(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Suppose a power plant delivers energy at 9.7E2 MW using steam turbines. The steam goes into the turbines superheated at 665 K and deposits its unused heat in river water at 298 K. Assume that the turbine operates as an ideal Carnot engine.

a. If the river flow rate is 37 m3/s, estimate the average temperature increase of the river water immediately downstream from the power plant.

b. What is the entropy increase per kilogram of the downstream river water in J/kg·K?

2. Relevant equations

http://www.physics.iastate.edu/getfile.php?FileID=3135 [Broken]

http://www.physics.iastate.edu/getfile.php?FileID=3170 [Broken]

3. The attempt at a solution

I solved for efficiency using e=1-T_L/T_H

Then used e=W/Q_H to get Q_H in watts

I could find Q_L with Q_H=Q_L+W but don't know where to go from there.

Maybe convert the volumetric flow rate to mass flowrate using density and then somehow use Q=mc(delta T)??

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# Homework Help: What is the entropy increase per kilogram

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