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INTRO TO POWER AND ENERGY
Department of Technology
Appalachian State University
What is Energy?
Ability to do work; a force
QUESTION: What are some examples of sources of energy?
Why do we need energy?
Everything:EatStay wormStay coolWorkRecreation
Forms of Energy
Thermal Chemical Electrical Radiant Mechanical Acoustic (Sound) Nuclear
Energy Transfer
Energy transfer devices use an energy input to produce an output.
Example: Gas engine
Gas engines use chemical energy to produce rotary (mechanical) motion.
Renewable vs. Non-renewable
Non-Renewable
Energy forms that are not reproduced as fast as we use them.
Examples:
Fossil Fuels: (Coal, Gas, Oil)
Nuclear
Question:
Why are they helpful?
Problems with Non-Renewables
Pollution
Depletion
Renewable Energy Sources of energy that can reproduce as fast as we
use them.
Examples:
Wind
Solar
Hydro
Biomass
Question:
Why are they helpful?
What is Power?
The rate at which work is done or energy is transferred.
QUESTION: How is power measured? Horse PowerWattsDecibels
Activities
Break up into groups and cycle throughout the different activities.
Bike Generator Personal Horsepower Micro-Hydro Sustainability Trailer Solar Thermal Recycling