# How much heat exits the back side q h m h 2 h 3

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How much heat exits the back side? ˙ Q H = ˙ m ( h 2 h 3 ) = parenleftbigg 0 . 138808 kg s parenrightbiggparenleftbiggparenleftbigg 426 . 771 kJ kg parenrightbigg parenleftbigg 249 . 10 kJ kg parenrightbiggparenrightbigg = 24 . 6622 kW. (10.174) Note that ˙ Q H = ˙ Q in + ˙ W, (10.175) 24 . 6622 kW = (19 . 447 kW ) + (5 . 2152 kW ) . (10.176) The coefficient of performance is β = ˙ Q in ˙ W = 19 . 447 kW 5 . 2152 kW = 3 . 72891 . (10.177) The University of Notre Dame Power Plant also serves as a generator of chilled water for air conditioning campus buildings. This is effectively a refrigerator on a grand scale, though we omit details of the actual system here. A photograph of one of the campus chillers is shown in Fig. 10.21. CC BY-NC-ND. 2011, J. M. Powers.

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308 CHAPTER 10. CYCLES Figure 10.21: Chiller in the University of Notre Dame Power Plant, 14 June 2010. CC BY-NC-ND. 2011, J. M. Powers.
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• Spring '10
• Powers
• Thermodynamics, Heat engine, Carnot cycle, Gas turbine, Thermodynamic cycles, J. M. Powers

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