IOT

POLY ENGINEERING3-1

4 JAN 11

Homework due Thursday

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

LETTER

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POLY ENGINEERING3-1

Schedule

Tuesday – CoalWednesday – Natural Gas/Petroleum

Thursday, Friday, Monday, Tuesday – Midterm reviewWednesday – Multiple Choice Midterm

Thursday – Drafting Midterm

MIDTERM WILL BE ON UNIT 1 AND UNIT 2

ABEADBC

AEBEBCCEE

ADCDADBC

ABDECEABD

CBDA

B

BC

A

D

BD

BE

CE

AE

Parallel Projection to Orthographic

1. Add width of front view to depth.

2. Add the space we will put between: 1”

5” + 1.75” = 6.75”

HORIZONTAL STARTING POINT

6.75” + 1” = 7.75”

3. Subtract from the total width.10” – 7.75” = 2 ¼”

4. Divide by 2.Horizontal Starting Point = 1 1/8”

1. Add height of front view to depth.

2. Add the space we will put between: 1”

4” + 1.75” = 5.75”

VERTICAL STARTING POINT

5.75” + 1” = 6.75”

3. Subtract from the total height.7.25” – 6.75” = ½”

4. Divide by 2.Vertical Starting Point = ¼”

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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

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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?

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POLY ENGINEERING3-1

Why a watermark of the Sun?

The Sun is the source of all energy on Earth.

Topic 1

Energy Sources – Fuels

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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 BC – China carved ornaments2. 2,000 BC – funeral pyres in Britain3. 1,200s AD – 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

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POLY ENGINEERING3-1

4 JAN 11

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

LETTER