Ch 6. Entropy Multimedia Engineering Thermodynamics Entropy Tds Relations EntropyChange IsentropicProcess IsentropicEfficiency EntropyBalance (1) EntropyBalance (2) ReversibleWork
 Chapter 1. Basics 2. Pure Substances 3. First Law 4. Energy Analysis 5. Second Law 6. Entropy 7. Exergy Analysis 8. Gas Power Cyc 9. Brayton Cycle 10. Rankine Cycle Appendix Basic Math Units Thermo Tables Search eBooks Dynamics Fluids Math Mechanics Statics Thermodynamics Author(s): Meirong Huang Kurt Gramoll ©Kurt Gramoll

 THERMODYNAMICS - CASE STUDY Introduction Problem Graphic Austin's dad likes to take a long shower in the morning. Austin needs to find some way to get him out more quickly. What is known: Austin's dad takes a 15-minute shower every morning. The average flow rate through the shower head is 10 L/min. An electric water heater heats the water from 15oC to 60oC and then mixes it with cold water to 40oC at a T-elbow before it is sent to the shower head. T-elbow and the Electric Heater Question How much entropy is generated by Austin's father when he takes his daily shower? Approach Take the electric heater and the T-elbow pipe together as a control volume. Consider the mass balance and entropy balance of the control volume simultaneously.