Figure 23 Control Volume for Second Law Analysis

Figure 22 Real Process Cycle Compared to Carnot Cycle

Thermodynamics Heat Transfer and Fluid Flow Volume 1 of 3
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SECOND LAW OF THERMODYNAMICS Thermodynamics sections in and out. Entropy may also be added to the control volume because of heat transfer at the boundary of the control volume. Figure 23 Control Volume for Second Law Analysis A simple demonstration of the use of this form of system in second law analysis will give the student a better understanding of its use. Example 3: Open System Second Law Steam enters the nozzle of a steam turbine with a velocity of 10 ft/sec at a pressure of 100 psia and temperature of 500°F at the nozzle discharge. The pressure and temperature are 1 atm at 300°F. What is the increase in entropy for the system if the mass flow rate is 10,000 lbm/hr? HT-01 Page 76 Rev. 0

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