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Screen Baltimore Polytechnic Institute Uniting Theory and Practice Renewable matter & energy 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 # Name 1 Adams 2 Anderso n 3 Arringt on 4 Banks 5 Bell 6 Bennett 7 Carter 8 Chamber s 9 Chen- Sue 10 Dix 11 Eaddy 12 Gousse Jr. # Name 13 Harris 14 Haskins 15 Jones 16 Joyner 17 Knauer 18 Lewis 19 Martin 20 Missour i 21 Pichard o 22 Powell 23 Quickle y 24 Sanchez -V. # Name 25 Smoot 26 Staton 27 Thompso n 28 Wilson 29 Zywan Period 7

Screen Baltimore Polytechnic Institute Uniting Theory and Practice Renewable matter & energy 123456 789101112 131415161718 192021222324 252627282930 313233343536

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Syllabus and Policies Read over the syllabus for this class ◦ You must return the signed acknowledgment form as homework for tomorrow Policies ◦ Start of Class ◦ Dress Code ◦ Behavior ◦ Coach Class ◦ Disciplinary Actions

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Page 1: Screen Baltimore Polytechnic Institute Uniting Theory and Practice Renewable matter & energy 123456 789101112 131415161718 192021222324 252627282930 313233343536

Screen

Baltimore Polytechnic Institute

Uniting Theory and PracticeRenewable matter & energy

1 2 3 4 5 67 8 9 10 11 1213 14 15 16 17 1819 20 21 22 23 2425 26 27 28 29 3031 32 33 34 35 36

# Name1 Adams2 Anderson3 Arrington4 Banks5 Bell6 Bennett7 Carter8 Chambers9 Chen-Sue

10 Dix11 Eaddy12 Gousse Jr.

# Name13 Harris14 Haskins15 Jones16 Joyner17 Knauer18 Lewis19 Martin20 Missouri21 Pichardo22 Powell23 Quickley24 Sanchez-V.

# Name25 Smoot26 Staton27 Thompson28 Wilson29 Zywan

Period 7

Page 2: Screen Baltimore Polytechnic Institute Uniting Theory and Practice Renewable matter & energy 123456 789101112 131415161718 192021222324 252627282930 313233343536

Welcome Back Seniors!!!You are the class of 2014

◦Lead by exampleRoll CallSyllabusExpectations

Page 3: Screen Baltimore Polytechnic Institute Uniting Theory and Practice Renewable matter & energy 123456 789101112 131415161718 192021222324 252627282930 313233343536

Syllabus and PoliciesRead over the syllabus for this class

◦You must return the signed acknowledgment form as homework for tomorrow

Policies◦Start of Class◦Dress Code◦Behavior◦Coach Class◦Disciplinary Actions

Page 4: Screen Baltimore Polytechnic Institute Uniting Theory and Practice Renewable matter & energy 123456 789101112 131415161718 192021222324 252627282930 313233343536

Renewable Energy EssayRenewable energy is topic of

debate in today’s society and engineering is right in the middle of it. Many people feel we are close to damaging the Earth, permanently, because of our current consumption of non-renewable energies. Others argue that the Earth has always gone through cycles similar to what is presently occurring…

Page 5: Screen Baltimore Polytechnic Institute Uniting Theory and Practice Renewable matter & energy 123456 789101112 131415161718 192021222324 252627282930 313233343536

Renewable Energy EssayWhat do you think?

◦(15 mins) Explain your point of view on renewable energy in three paragraphs (Introduction, Argument, Conclusion)

(5 mins) Reinforce your argument with supporting data.◦You may use your cell phones to

search the web for information

Page 6: Screen Baltimore Polytechnic Institute Uniting Theory and Practice Renewable matter & energy 123456 789101112 131415161718 192021222324 252627282930 313233343536

Renewable Energy EssayExchange essays with your partner

◦(5 mins) Read and critique your partner’s essay Did they follow the format? (Intro., Arg., Concl.) Were there any misspellings or grammar errors? Any logical inconsistencies? Did they attempt to persuade the reader? How could they have been more compelling?

(15 mins) Read your partner’s essay aloud.

Page 7: Screen Baltimore Polytechnic Institute Uniting Theory and Practice Renewable matter & energy 123456 789101112 131415161718 192021222324 252627282930 313233343536

Drill: Friday, 1/24/13

Answer in your own words…

What is the meaning of Thermodynamics?

What is a thermodynamic system?

Page 8: Screen Baltimore Polytechnic Institute Uniting Theory and Practice Renewable matter & energy 123456 789101112 131415161718 192021222324 252627282930 313233343536

Drill: Wednesday, 9/18/13

Answer in your own words…

List all of the types of renewable energy with which you are familiar.

Page 9: Screen Baltimore Polytechnic Institute Uniting Theory and Practice Renewable matter & energy 123456 789101112 131415161718 192021222324 252627282930 313233343536

Matter and EnergyRenewable

Page 10: Screen Baltimore Polytechnic Institute Uniting Theory and Practice Renewable matter & energy 123456 789101112 131415161718 192021222324 252627282930 313233343536

Matter and EnergyThis course is an introduction to the study of thermodynamics and an investigation of how it can be applied to renewable and non-renewable energy sources.

Thermodynamics comes from the Greek words:therme (heat) + dynamis (force)

=Thermodynamics

“the study of systems and energy transfer”

Page 11: Screen Baltimore Polytechnic Institute Uniting Theory and Practice Renewable matter & energy 123456 789101112 131415161718 192021222324 252627282930 313233343536

Matter and EnergySo what is a thermodynamic system?Thermodynamics - “the study of systems and energy

transfer”

Pressure CookerGas-fired Boiler

Geothermal Power PlantSystem – whatever we choose to study

Systems have a boundary and surroundings.

We could be talking about…

Page 12: Screen Baltimore Polytechnic Institute Uniting Theory and Practice Renewable matter & energy 123456 789101112 131415161718 192021222324 252627282930 313233343536

Matter and EnergySo what is a thermodynamic system?Thermodynamics - “the study of systems and energy

transfer”

We can choose to study all…

System – what we choose to study

Boundary – separates system from surroundings

Surroundings – everything outside of system

or some part…of a complex system.Always draw the system and its boundaries before starting any work!!!

Page 13: Screen Baltimore Polytechnic Institute Uniting Theory and Practice Renewable matter & energy 123456 789101112 131415161718 192021222324 252627282930 313233343536

Matter and EnergyLet’s practice drawing system boundaries…

Thermodynamics - “the study of systems and energy transfer”

What’s the boundary if I’m interested in the pressure drop of steam as it passes through the turbine?

What’s the boundary if we’re interested in the efficiency of the cooling tower?We’ve been asked to determine the efficiency of the entire geothermal power plant...what should our boundary be?

Page 14: Screen Baltimore Polytechnic Institute Uniting Theory and Practice Renewable matter & energy 123456 789101112 131415161718 192021222324 252627282930 313233343536

Matter and EnergyThere are two types of systems…Closed Systems – no mass crosses the

boundary

Open Systems – mass crosses the boundary

Thermodynamics - “the study of systems and energy transfer”

Page 15: Screen Baltimore Polytechnic Institute Uniting Theory and Practice Renewable matter & energy 123456 789101112 131415161718 192021222324 252627282930 313233343536

Matter and EnergyThere are two types of systems…Closed Systems – no mass crosses the boundaryOpen Systems – mass crosses the boundary

Thermodynamics - “the study of systems and energy transfer”

“Energy can cross the boundary of both open and closed systems.”

Energy in… Energy out…

Page 16: Screen Baltimore Polytechnic Institute Uniting Theory and Practice Renewable matter & energy 123456 789101112 131415161718 192021222324 252627282930 313233343536

Matter and EnergyHow do we describe systems?

Thermodynamics - “the study of systems and energy transfer”

Energy in… Energy out…

Property – a characteristic used to describe a system

What are some properties we could use to describe the system above?

MassVolume

TemperaturePressure

We’ve intentionally placed the properties above into two groups. Why do you think that is?

What’s common to the properties in each group? How would you measure each property?If we removed a small amount of mass from the system, which properties would you expect to change?

Page 17: Screen Baltimore Polytechnic Institute Uniting Theory and Practice Renewable matter & energy 123456 789101112 131415161718 192021222324 252627282930 313233343536

Matter and EnergyThere are two types of properties:Property – a characteristic used to describe a

system

1) Extensive – the whole equals the sum of its parts

Which set of properties are best described as extensive?

MassVolume

TemperaturePressure

2) Intensive – the whole is the same as any partEXTENSIVE INTENSIVE

Mass and Volume are both extensive properties.Temperature and Pressure are intensive properties.

Extensive properties usually use capital letters as symbols.Intensive properties usually use lower case letters as symbols.

Page 18: Screen Baltimore Polytechnic Institute Uniting Theory and Practice Renewable matter & energy 123456 789101112 131415161718 192021222324 252627282930 313233343536

Matter and EnergyProperty – a characteristic used to describe a

systemProperty Symbol

Definition

Mass m measure of the amount of material present

Volume V amount of space occupied by an object

Energy E the ability to do work or produce heatTemperature

T measure of the molecular activity of a substance

Pressure P force exerted per unit area on the boundaries of a substance

Density ρ the total mass of a substance divided by the total volumeWhat type of property is

density, ρ?What type of property is energy, E?

IntensiveExtensive

Page 19: Screen Baltimore Polytechnic Institute Uniting Theory and Practice Renewable matter & energy 123456 789101112 131415161718 192021222324 252627282930 313233343536

Matter and EnergyProperty – a characteristic used to describe a

system

When an extensive property is made intensive by dividing by mass, we use a lowercase symbol and the prefix “specific”.

In general, an extensive property can be made intensive by dividing by the mass of the system.

Extensive Divide by Mass

Intensive

EnergyE

kilojoules, kJ

Energy/massE/m

kilojoules/kilogram

Specific Energye

kJ/kg

Page 20: Screen Baltimore Polytechnic Institute Uniting Theory and Practice Renewable matter & energy 123456 789101112 131415161718 192021222324 252627282930 313233343536

Matter and Energy

Homework:Return the signed agreement form attached to your syllabus.Study your notes!

Thermodynamics - “the study of systems and energy transfer”

Page 21: Screen Baltimore Polytechnic Institute Uniting Theory and Practice Renewable matter & energy 123456 789101112 131415161718 192021222324 252627282930 313233343536

HOMEWORKDefine the following properties:Specific volumeDensitySpecific gravity Humidity