1. Energy and Work by Jeff Rhoads and Terry Ballinger MST @ MSU 2006

2. Basic Definitions Energy – the potential a substance has to do work Work – the energy (effort) expended in the performance of a task

3. Mechanical Work In its simplest form: Work = Force X Distance Work = Force X Distance

4. Energy and Work Much, if not all, of engineering deals with: Converting energy from one type to another Converting energy from one type to another Transporting energy from one body or substance to another Transporting energy from one body or substance to another

5. Energy and Work Relevant Method of Transportation: Heat Transfer - the transfer of thermal energy from a high temperature source to a low temperature sink Heat Transfer - the transfer of thermal energy from a high temperature source to a low temperature sink

6. Heat Transfer Types of Heat Transfer: Conduction Conduction Convection Convection Radiation Radiation

7. Today’s Activity Design, develop, and manufacture a ‘solar’ cooker The winner of today’s competition will most likely be decided by who has the most efficient cooker Things to consider: Heat Loss Heat Loss Reflecting/Absorbing Surfaces Reflecting/Absorbing Surfaces Greenhouse Effects Greenhouse Effects