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Chapter 9 (1).notebook 1 January 29, 2014

Chapter 9 (1).notebook - Ms. Blake 802msblakemmc.weebly.com/uploads/1/5/0/3/15030024/chapter_94.pdf · Chapter 9 (1).notebook 2 January 29, 2014 Pneumatic Systems A gas is used to

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Page 1: Chapter 9 (1).notebook - Ms. Blake 802msblakemmc.weebly.com/uploads/1/5/0/3/15030024/chapter_94.pdf · Chapter 9 (1).notebook 2 January 29, 2014 Pneumatic Systems A gas is used to

Chapter 9 (1).notebook

1

January 29, 2014

Page 2: Chapter 9 (1).notebook - Ms. Blake 802msblakemmc.weebly.com/uploads/1/5/0/3/15030024/chapter_94.pdf · Chapter 9 (1).notebook 2 January 29, 2014 Pneumatic Systems A gas is used to

Chapter 9 (1).notebook

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January 29, 2014

Pneumatic Systems

A gas is used to exert a force on the gas in an enclosed space.

Compressors are necessary as gases can be compressed. They build up the air pressure, and then when the pressure is released, a strong, steady force is created.

Page 3: Chapter 9 (1).notebook - Ms. Blake 802msblakemmc.weebly.com/uploads/1/5/0/3/15030024/chapter_94.pdf · Chapter 9 (1).notebook 2 January 29, 2014 Pneumatic Systems A gas is used to

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January 29, 2014

Page 4: Chapter 9 (1).notebook - Ms. Blake 802msblakemmc.weebly.com/uploads/1/5/0/3/15030024/chapter_94.pdf · Chapter 9 (1).notebook 2 January 29, 2014 Pneumatic Systems A gas is used to

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January 29, 2014

Page 5: Chapter 9 (1).notebook - Ms. Blake 802msblakemmc.weebly.com/uploads/1/5/0/3/15030024/chapter_94.pdf · Chapter 9 (1).notebook 2 January 29, 2014 Pneumatic Systems A gas is used to

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Video clips!

Page 6: Chapter 9 (1).notebook - Ms. Blake 802msblakemmc.weebly.com/uploads/1/5/0/3/15030024/chapter_94.pdf · Chapter 9 (1).notebook 2 January 29, 2014 Pneumatic Systems A gas is used to

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Pascal's Law

Pressure applied to an enclosed fluid is transmitted with equal force throughout the entire container.

This is the principle behind hydraulic and pneumatic systems.

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Examples of Pascal's Law:

­ car lift or hoist­ hydraulic jack­ automobile braking system­ air compressors­ automobile/bicycle tires

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Pressure and Volume

Increasing the pressure on a gas results in a decrease in volume when temperature is held constant.

Increasing the temperature of a gas results in an increase in volume when pressure is held constant.

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Increasing the temperature of a gas results in an increase in pressure when volume is held constant. 

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Examples that illustrate the relationship among pressure, volume and temperature when gaseous fluids are compressed or heated:

1) Propane Cylinders

(increase in pressurewith a decrease involume at constanttemperature)(ii) heating an aerosolpressure          volume 

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When the propane is inside the tank it is under pressure, which causes it to be a liquid. When you release the pressure (open the valve), the liquid evaporates and comes out as a gas.

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2) Aerosol can

temperature           pressure