1. Announcement Fiend trip Thursday 8 am on UT Campus
Friday 8 am St. Edward's University

2. Lecture Objectives: Introduce Low temperature Energy Systems
Stirling engines

3. Low temperature energy systems
Waist heat is part of almost every CHP
Many new micro CHP system use Stirling engine

4. Stirling cycle Closed Cycle Engine No phase change
Working fluid: air, hydrogen, or helium

5. Stirling engine Theoretical efficiency of up to 25% (for 500ºC)
Real efficiency in residential
application between 6-8%