Chapter 5 Section 3 Using Thermal Energy Thermal

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Chapter 5 / Section 3: Using Thermal Energy Thermal energy can be made useful

Chapter 5 / Section 3: Using Thermal Energy Thermal energy can be made useful by controlling its transfer and by transforming it into other forms of energy.

Essential Questions � What are some common types of heating systems? � What are

Essential Questions � What are some common types of heating systems? � What are the first and second laws of thermodynamics? � How does an internal combustion engine work? � How does a refrigerator work? Copyright © Mc. Graw-Hill Education Using Thermal Energy

Heating Systems Copyright © Mc. Graw-Hill Education Using Thermal Energy

Heating Systems Copyright © Mc. Graw-Hill Education Using Thermal Energy

Heating Systems Most buildings contain some type of heating system. Copyright © Mc. Graw-Hill

Heating Systems Most buildings contain some type of heating system. Copyright © Mc. Graw-Hill Education Using Thermal Energy

Heating Systems Most buildings contain some type of heating system. Oldest method – wood

Heating Systems Most buildings contain some type of heating system. Oldest method – wood or coal-burning stove. Copyright © Mc. Graw-Hill Education Using Thermal Energy

Heating Systems Most buildings contain some type of heating system. � Oldest method –

Heating Systems Most buildings contain some type of heating system. � Oldest method – wood or coal-burning stove. � Forced-Air Systems: most common type of heating system in use today Copyright © Mc. Graw-Hill Education Using Thermal Energy

Heating Systems Most buildings contain some type of heating system. � Oldest method –

Heating Systems Most buildings contain some type of heating system. � Oldest method – wood or coal-burning stove. � Forced-Air Systems: most common type of heating system in use today � Radiator System: Hot water or steam – conduction and convection used to spread. Copyright © Mc. Graw-Hill Education Using Thermal Energy

Heating Systems Most buildings contain some type of heating system. � Oldest method –

Heating Systems Most buildings contain some type of heating system. � Oldest method – wood or coal-burning stove. � Forced-Air Systems: most common type of heating system in use today � Radiator System: Hot water or steam – conduction and convection used to spread. � Electric Heating Systems: Conduction and convection spread heat in individual coil systems. Copyright © Mc. Graw-Hill Education Using Thermal Energy

Heating Systems Most buildings contain some type of heating system. � Oldest method –

Heating Systems Most buildings contain some type of heating system. � Oldest method – wood or coal-burning stove. � Forced-Air Systems: most common type of heating system in use today � Radiator System: Hot water or steam – conduction and convection used to spread. � Electric Heating Systems: Conduction and convection spread heat in individual coil systems. � Solar Heating: radiant energy from the Sun can be used to help heat homes � Active and Passive Copyright © Mc. Graw-Hill Education Using Thermal Energy

Active Solar Heating Solar collectors used that absorb radiant energy from the Sun. �

Active Solar Heating Solar collectors used that absorb radiant energy from the Sun. � roof or south side of a building Copyright © Mc. Graw-Hill Education Using Thermal Energy

How is our school heated?

How is our school heated?

How much do you think the heating bill at Mall of America costs?

How much do you think the heating bill at Mall of America costs?

Mall of America® By The Numbers • 8 acres of skylights allow about 70%

Mall of America® By The Numbers • 8 acres of skylights allow about 70% of the natural light to enter the Mall • 4. 3 miles of total store front footage • 7 Yankee Stadiums can fit inside the Mall • 27 rides and attractions in Nickelodeon Universe® • 32 Boeing 747 s could fit inside the Mall • 70 degrees inside Mall of America whether its spring, summer, winter or fall • 258 Statues of Liberty could lie inside the Mall • 12, 550 on-site parking spaces at Mall of America in two ramps • 30, 000+ live plants and 400 live trees climbing as high as 35 feet tall in Nickelodeon Universe • 32, 000+ tons of trash recycled each year • 4. 87 million square feet of gross building area • 40 million visitors annually which is more than the combined populations of North Dakota, South Dakota, Iowa. . . and Canada • If Mount Rushmore was divided into individual monuments, a president could reside in each of the Mall’s four courts

Thermodynamics Copyright © Mc. Graw-Hill Education Using Thermal Energy

Thermodynamics Copyright © Mc. Graw-Hill Education Using Thermal Energy

Thermodynamics Thermal energy, heat, and work are related, and the study of the relationship

Thermodynamics Thermal energy, heat, and work are related, and the study of the relationship among them is thermodynamics. Copyright © Mc. Graw-Hill Education Using Thermal Energy

Heat and Work Increase Thermal Energy Copyright © Mc. Graw-Hill Education Using Thermal Energy

Heat and Work Increase Thermal Energy Copyright © Mc. Graw-Hill Education Using Thermal Energy

Heat and Work Increase Thermal Energy � You increase the energy of a system

Heat and Work Increase Thermal Energy � You increase the energy of a system whenever you do work on that system or heat that system. Copyright © Mc. Graw-Hill Education Using Thermal Energy

The First Law of Thermodynamics Copyright © Mc. Graw-Hill Education Using Thermal Energy

The First Law of Thermodynamics Copyright © Mc. Graw-Hill Education Using Thermal Energy

The First Law of Thermodynamics The energy in a system remains constant, even thought

The First Law of Thermodynamics The energy in a system remains constant, even thought it changes forms. Copyright © Mc. Graw-Hill Education Using Thermal Energy

The Second Law of Thermodynamics Energy spontaneously spreads from regions of higher energy to

The Second Law of Thermodynamics Energy spontaneously spreads from regions of higher energy to regions of lower energy. Copyright © Mc. Graw-Hill Education Using Thermal Energy

Converting Thermal Energy to Mechanical Energy Copyright © Mc. Graw-Hill Education Using Thermal Energy

Converting Thermal Energy to Mechanical Energy Copyright © Mc. Graw-Hill Education Using Thermal Energy

Converting Thermal Energy to Mechanical Energy Heat Engine. � Gas converts to thermal energy.

Converting Thermal Energy to Mechanical Energy Heat Engine. � Gas converts to thermal energy. � Engine transforms thermal energy into mechanical energy by rotating the car’s wheels. Copyright © Mc. Graw-Hill Education Using Thermal Energy

Internal Combustion Engines The heat engine in a car is an internal combustion engine

Internal Combustion Engines The heat engine in a car is an internal combustion engine in which fuel is burned inside the engine in chambers or cylinders. � Each cylinder contains a piston that moves up and down. � Each up-and-down movement of the piston is called a stroke. Copyright © Mc. Graw-Hill Education Using Thermal Energy

Internal Combustion Engine https: //www. youtube. com/watch? v=SYd 40 q. WQ 9 Bc Copyright

Internal Combustion Engine https: //www. youtube. com/watch? v=SYd 40 q. WQ 9 Bc Copyright © Mc. Graw-Hill Education Using Thermal Energy

Other Thermal Energy Transfers � Refrigerator � Heat Pumps � Air conditioners Copyright ©

Other Thermal Energy Transfers � Refrigerator � Heat Pumps � Air conditioners Copyright © Mc. Graw-Hill Education Using Thermal Energy

The Human Coolant Your body uses evaporation to keep its internal temperature constant. �

The Human Coolant Your body uses evaporation to keep its internal temperature constant. � As you exercise, your body generates sweat. As the sweat evaporates, it carries away thermal energy. Copyright © Mc. Graw-Hill Education Using Thermal Energy

Geothermal Heat �https: //www. youtube. com/watch? v=Fg. Iu. Ek 26 J 5 Q

Geothermal Heat �https: //www. youtube. com/watch? v=Fg. Iu. Ek 26 J 5 Q

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