iot poly engineering 3-1 drill january 31, 2011 copy tonight’s homework: on a separate sheet of...
TRANSCRIPT
IOT
POLY ENGINEERING3-1
DRILL
January 31, 2011
Copy tonight’s homework:
On a separate sheet of paper, define the following:• Combustion, Compression, Conservation, Energy,
Essay, Force, Fuel, Kinetic Energy, Municipal, Potential Energy, Power, Power Plant, Pressure, Propulsion, Renewable, Rudimentary, Thermodynamics, Vector, Volatile, Work
Typed
IOT
POLY ENGINEERING3-1
1. Communication technology significantly impacts the way we live.
2. Information is an essential resource for design (e.g., Drafting, AutoCAD and Sketchup)
3. Technology has changed the nature of communication in our society (evidenced by the chronology of communication technology).
Main Ideas:
Unit 2 Completion
IOT
POLY ENGINEERING3-1
– Goals Inform Persuade Entertain Control Manage Educate
– Inputs Source of Communication
– ProcessesEncoder Transmitter Receiver Decoder Storage Retrieval
– OutputsMessage to the destination
– Feedback and ControlReversing the communication line
INPUTS PROCESSES
OUTPUTS
GOALS
GOALS
FEEDBACKControl
Not always
Unit 2 Completion
IOT
POLY ENGINEERING3-1
Timeline Projects
• Majority of timelines and projects failed to meet minimum requirements.
• Grades will be included on 2nd quarter report card.
Unit 2 Completion
IOT
POLY ENGINEERING3-1
Bi-weekly Essay AssignmentsPurpose: further develop reading, writing, and
technological literacy skills
Assignment1. Visit the “Assignments” section of the BPI website.2. Read assignment instructions AND FOLLOW THEM.3. Visit online articles.4. Type thorough answers to questions, print your
answers, and bring in ON DUE DATE.
Impacts Journals
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POLY ENGINEERING3-1
Impacts Journals1. Go to “www.bpi.edu”2. Click “Classes & Homework”3. Click “Engineering”4. Click “Impacts of Technology”5. Scroll all the way down and click “See Homework”
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POLY ENGINEERING3-1
Bi-weekly Essay Assignments
On the Website1. Assignment details
2. Scoring rubric 3. Links to articles
4. Sample responses
(Beware of grammar, formatting, instructions, and language)
USE the resources given to you!
Impacts Journals
IOT
POLY ENGINEERING3-1
Bi-weekly Essay Assignments
Due Dates• Every other Monday between now and the end of the
3rd quarter, beginning next Monday.• Follow online instructions carefully – some weeks
require the completion of 2 articles.• January 31 (next Monday) and February 14th are the
first two due dates.• Reminders in class are not likely.
Impacts Journals
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POLY ENGINEERING3-1
1. Energy Sources – Fuels and Power Plants2. Classical Mechanics:
Force, Work, Energy, and Power3. Trigonometry and Vectors4. Energy and Power 5. Impacts of Current Generation and Use
UNIT 3 – ENERGY AND POWER
Topics Covered
IOT
POLY ENGINEERING3-1
UNIT 3 – ENERGY AND POWERTopic 1: Energy Sources – Power Plants and Fuels FUEL: a material used to produce heat or power
Most of the following are power plants – what is the fuel shown/used in each image?
IOT
POLY ENGINEERING3-1
Why a watermark of the Sun?
The Sun is the source of all energy on Earth.
Topic 1
Energy Sources – Fuels
IOT
POLY ENGINEERING3-1
1. Energy is NOT fuel used for transportation and heating, for lights and appliances, and foods for consumption.
FUEL ENERGY2. Fuels are a source of energy.3. Fuels are the material source of energy,
containing it as a potential.
Fuels and Energy
Topic 1 Energy Sources – Fuels
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POLY ENGINEERING3-1
1. Non-renewable1. Fossil Fuels
Coal, Natural Gas, Petroleum (Oil)2. Nuclear – Uranium ore
2. RenewableBiofuels, Biomass, Geothermal, Hydro,
Solar, Tidal, Wave, Wind
Fuel Types
Topic 1
Energy Sources – Fuels
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POLY ENGINEERING3-1
1. Fossil fuels are burned to release stored energy.2. Formed from the heated and pressurized
remains of dead plant and animal life over hundreds of millions of years.
3. Non-renewable – millions of years to form and reserves are being depleted faster than new ones are being formed.
4. Volatile: natural gas and petroleum5. Nonvolatile: coal
Non-Renewable Fuels – Fossil Fuels
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POLY ENGINEERING3-1
Non-Renewable Fuels – Coal1. Coal is formed from the remains of terrestrial
plants that died around 350 million years ago. 2. Plant remains preserved in water and mud.
Heat and Pressure
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POLY ENGINEERING3-1
Non-Renewable Fuels – Coal
1. 4,000 B.C.E. – China carved ornaments2. 2,000 B.C.E. – funeral pyres in Britain3. 1,200s C.E. – underground mining developed
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POLY ENGINEERING3-1
Non-Renewable Fuels – Coal
History of Extraction and Use• Colliery (COLL-yer-ee) – a coal mine and its
connected buildings.Coal must be cleaned and refined (improved) after
extraction• South Wales, Great Britain – oldest known colliery.• First commercial coal mining in U.S. in 1730s, VA.• Prior to 1880s, coal was picked by hand
underground.• By 1912, surface mining was used.
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POLY ENGINEERING3-1
Non-Renewable Fuels – Coal
Methods of ExtractionUnderground Mining:
• 60% of world production• 33% of U.S. mining• Uses timber for support tunnel• Machines enter and extract coal
Surface (Strip) Mining:• More coal extracted than underground mining• Exposes coal by removing land above deposits
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POLY ENGINEERING3-1
Non-Renewable Fuels – Coal
Uses• Coal is mostly used as a solid fuel to produce
electricity and heat through combustion.• It is usually pulverized (crushed into small
particles) then burned in a furnace for electricity generation at a power plant.
• ~40% of world’s electricity comes from coal• ~49% of U.S. electricity comes from coal