1. EGR 334 Thermodynamics Chapter 4: Review Lecture 19: Integrated Systems and System Analysis Quiz Today?

2. Today’s main concepts: Review of Mass balance equation Review of Continuity equation Review of Energy balance equation Review of Control Volume applications Reading Assignment: Homework Assignment: Read Chapter 5, All Sections Come prepared to participate in a classroom discussion. Problems from Chap 4: 94, 100, 106

3. Terms for Chap 5 Class Discussion : Spontaneous Heat Transfer Clausius Statement Kelvin-Planck Statement Entropy Statement Irreversible vs. Reversible Internally Reversible Process Carnot Corollaries Carnot Efficiency Max. heat pump efficiency Max. refrigeration cycle COP Carnot Cycle Clausius Inequality 3 You may want to create a summary sheet to help you discuss each of the concepts.

4. 4 Mass Rate Balance: Energy Rate Balance: Review: For a Control Volume:

5. 5 Mass Rate Balance: Energy Rate Balance: Review: For a Control Volume: SS

6. Simplified CV Models: 6 NozzlesDiffuser Pump Compressor Throttling Valve Turbine

7. Control Volume Applications: 7 Boiler Direct Contact Heat Exchanger Tube Heat Exchanger Mass balance: Energy balance: Mass balance: Energy balance:

8. Integrated Systems: Power Plant Cycle 1. Condenser 2. Throttling valve/ Expander 3. Evaporator 4. Compressor W CV Q CV Refrigeration Cycle

9. Workout Problem 1: 9 A residential air conditioning system operates at steady state. Refrigerant-22 circulates through the components of the system. Property data at key locations are given on the figure. If the evaporator removes energy by heat transfer from the room air at a rate of 600 Btu/min, determine a) the rate of heat transfer between the compressor and the surroundings in Btu/min b) the rate of heat released to the outside air c) the coefficient of performance.

10. 10 end of Lecture 19 Slides