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Technology Interactions ‹ Chapter Title Copyright © Glencoe/McGraw-Hill A Division of The McGraw-Hill Companies, Inc. Technology Interactions Hydraulic.

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Presentation on theme: "Technology Interactions ‹ Chapter Title Copyright © Glencoe/McGraw-Hill A Division of The McGraw-Hill Companies, Inc. Technology Interactions Hydraulic."— Presentation transcript:

1 Technology Interactions ‹ Chapter Title Copyright © Glencoe/McGraw-Hill A Division of The McGraw-Hill Companies, Inc. Technology Interactions Hydraulic and pneumatic systems use fluid power.

2 Technology InteractionsChapter 16 Hydraulics & Pneumatics Copyright © Glencoe/McGraw-Hill A Division of The McGraw-Hill Companies, Inc. Fluid Power Fluid power is the use of liquids or gases under pressure to move objects or perform other tasks. Any substance that flows is a fluid. Liquids and gases are both fluids. Fluids only have power when they are flowing. Fluids can be put under pressure and moved through pipes or hoses to where they are needed.

3 Technology InteractionsChapter 16 Hydraulics & Pneumatics Copyright © Glencoe/McGraw-Hill A Division of The McGraw-Hill Companies, Inc. Matter All objects are made of matter. The three states of matter are ♦ solid ♦ liquid ♦ gas The state of matter is determined by how tightly its molecules are held together.

4 Technology InteractionsChapter 16 Hydraulics & Pneumatics Copyright © Glencoe/McGraw-Hill A Division of The McGraw-Hill Companies, Inc. Solids The molecules in solids ♦ are very strongly linked ♦ are hard to compress ♦ maintain both their volume and shape

5 Technology InteractionsChapter 16 Hydraulics & Pneumatics Copyright © Glencoe/McGraw-Hill A Division of The McGraw-Hill Companies, Inc. Liquids The molecules in liquids ♦ are more loosely linked ♦ are hard to compress ♦ maintain their volume but not their shape

6 Technology InteractionsChapter 16 Hydraulics & Pneumatics Copyright © Glencoe/McGraw-Hill A Division of The McGraw-Hill Companies, Inc. Gases The molecules in gases ♦ are very loosely linked ♦ are easy to compress ♦ do not maintain either their shape or volume

7 Technology InteractionsChapter 16 Hydraulics & Pneumatics Copyright © Glencoe/McGraw-Hill A Division of The McGraw-Hill Companies, Inc. Boyle’s Law There is a direct relationship between the temperature and pressure of any gas. ♦ P (pressure) x V (volume) = a constant number If pressure increases, the volume of the gas will decrease. If the volume increases, the pressure will decrease. This is true only if the temperature of the gas stays the same.

8 Technology InteractionsChapter 16 Hydraulics & Pneumatics Copyright © Glencoe/McGraw-Hill A Division of The McGraw-Hill Companies, Inc. Pascal’s Principle If a force is applied to a confined liquid, the resulting pressure is the same throughout the fluid and on the walls of the fluid’s container. Force, in the form of pressure, is transferred within fluid power systems.

9 Technology InteractionsChapter 16 Hydraulics & Pneumatics Copyright © Glencoe/McGraw-Hill A Division of The McGraw-Hill Companies, Inc. Hydraulic Systems Hydraulic systems use oil or another liquid. Liquids are very difficult to compress, so they can be used to transfer very powerful forces from one place to another. Hydraulic systems are ideal when high power and accuracy are required.

10 Technology InteractionsChapter 16 Hydraulics & Pneumatics Copyright © Glencoe/McGraw-Hill A Division of The McGraw-Hill Companies, Inc. Parts of a Hydraulic System A simple hydraulic system consists of: ♦ Fluid ♦ Pump ♦ Reservoir ♦ Relief valve ♦ Control valve ♦ Single-acting cylinder ♦ Transmission lines

11 Technology InteractionsChapter 16 Hydraulics & Pneumatics Copyright © Glencoe/McGraw-Hill A Division of The McGraw-Hill Companies, Inc. Uses of Hydraulic Systems Manufacturing Transportation Construction Agriculture Entertainment industry

12 Technology InteractionsChapter 16 Hydraulics & Pneumatics Copyright © Glencoe/McGraw-Hill A Division of The McGraw-Hill Companies, Inc. Pneumatic Systems Pneumatic systems use a gas, usually air. Pressure is built up by compressing the gas. Pneumatic systems can usually be lighter weight than hydraulic systems. The air they use is always available and since it is not a hazardous material, there is nothing to clean up.

13 Technology InteractionsChapter 16 Hydraulics & Pneumatics Copyright © Glencoe/McGraw-Hill A Division of The McGraw-Hill Companies, Inc. Parts of a Pneumatic System A simple pneumatic system consists of: ♦ Compressor ♦ Receiver ♦ Check valve ♦ Control valve ♦ Actuator

14 Technology InteractionsChapter 16 Hydraulics & Pneumatics Copyright © Glencoe/McGraw-Hill A Division of The McGraw-Hill Companies, Inc. Uses of Pneumatic Systems Construction Manufacturing Packaging Health care


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