1. Energy Usage in Agriculture
Unit 5 Energy
Energy Usage in Agriculture

2. What is Energy ?
The ability to work

3. What is a Hydrocarbon?
hydrocarbon is an organic compound consisting entirely of hydrogen and carbon.
found naturally occur in crude oil, where decomposed organic matter provides an abundance of carbon and hydrogen which, when bonded, can catenate to form seemingly limitless chain

4. Common types of hydrocarbon fuels
Gasoline
Diesel
Natural Gas
Propane
Kerosene
Coal

5. Another type of energy common to every day life is
Electrical

6. What is electrical energy used for ?
Lighting and heating homes
Efficient transportation
Modernized irrigation system ( changes in diesel engines to electrical engines)
As a component in internal combustion engines

7. Nuclear Energy
Heat generated radioactive decay to create steam which turns turbines to drive generators.

8. Positive Aspects to Nuclear Energy
Less pollution
Cheaper kilowatt cost over a period of time

9. Alternative energy sources
Biofuel
Biomass
Wind
Solar
Hydropower

10. Negative Aspects to Nuclear Energy
Heat generated water that has to be cool extensively before re entering the environment
Dangers from radioactive releases
How to properly dispose the wastes

11. Bio Fuels
Renewable energy from biological sources

12. Examples of common bio fuels
Bio diesel
Ethanol ( an alcohol product)
Methane gases ( derives from various waste products)

13. Biomass Plant matter rich in cellulose
Biomass power- electrical power generated from burning plant matter

14. Examples of uses for biomass power
Burning of bagasse to create steam to generate energy operate sugarmills
Most common use for biomass is the burning of wood to heat homes and cook.

15. Wind energy uses Power of wind used to turn a wind mill to drive pump
Now used to turn turbines to generate electricity

16. Solar Energy
Conversion of sunlight to electrical energy through the use of solar panels

17. Hydropower Energy
Moving water used to turn turbines which turns electrical generators
Ex: Toledo Bend Dam

19. Energy Transformation
Process of transforming one type of energy into another.

20. Examples of Energy Transformation
Burning a hydrocarbon like natural gas to generate electricity.
Gasoline in an internal combustion engine converting chemical energy into mechanical energy

21. Internal Combustion Engines
An engine where the combustion happens inside the engine

22. Examples of Internal combustion engines
Gasoline
Diesel
Propane
Natural Gas ( Methane)
Each engine has modifications due to the types of fuels they use.

23. For more information or to view how a propane engine runs, use the below link.

24. External Combustion Engines
An engine where the combustion happens outside the engine due to an external source of heat.

25. Common type of external combustion engine
Steam

26. How it works ?
External heat + water = steam which is pressurized in a boiler. This pressure either turns a turbine or pushes a piston.

28. Types of energy use to power external combustion engines
Wood
Any Hydrocarbons (often coal)
Nuclear

29. Common Flaws / problems with Four cycle gasoline engines
Low engine efficiency
High exhaust emissions
Noise pollution

30. Common Flaws / problems with Two cycle gasoline engines
Shorter service life
Greater emissions than that of the four cycle
Greater noise pollution than that of the four cycle
Lower engine efficiency than four cycle

31. Common Flaws / problems with Diesel engines
Costly to purchase
Heavier than other gas engines

32. Common Flaws / problems with Natural gas/ propane engines
Availability of fuels