Unit 29 – Electro, Pneumatic and Hydraulic Systems

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Hydraulics and pneumatics incorporate the importance of fluid power theory in modern industry. This is the technology that deals with the generation, control, and movement of mechanical elements or systems with the use of pressurised fluids in a confined system. In respect of hydraulics and pneumatics, both liquids and gases are considered fluids. Oil hydraulics employs pressurised liquid petroleum oils and synthetic oils, whilst pneumatic systems employ an everyday recognisable process of releasing compressed air to the atmosphere after performing the work.

This Module includes:

  • 4 Workbooks
  • 4 Assignments
  • 1 Worked Solutions

Description

The aim of this module is to develop students’ knowledge and appreciation of the applications of fluid power systems in modern industry. Students will investigate and design pneumatic, hydraulic, electro-pneumatic and electro-hydraulic systems. This unit offers the opportunity for students to examine the characteristics of fluid power components and evaluate work-related practices and applications of these systems.

On successful completion of this unit students will be able to explain applications of hydraulic and pneumatic systems in the production industry, determine the fundamental principles and practical techniques for obtaining solutions to problems, appreciate real-life applications of pneumatic and hydraulic systems, and investigate the importance of structured maintenance techniques.

Learning Outcomes

By the end of this unit students will be able to:

1. Calculate the parameters of pneumatic and hydraulic systems.

Pneumatic and hydraulic theory:
Combined and ideal gas laws: Boyle’s Law, Charles’ Law and Gay-Lussac’s Law
Fluid flow, calculation of pressure and velocity using Bernoulli’s Equation for Newtonian fluids
System performance, volumetric operational and isothermal efficiency
Dynamic and Kinematic Viscosity
Methods of measuring viscosity including Stokes’ Law
Navier Stokes Equations

2. Identify the notation and symbols of pneumatic and hydraulic components.

Performance of hydraulic and pneumatic components:
The use and importance of International Standards, including relative symbols and devices
Fluid power diagrams
Pneumatic and hydraulic critical equipment and their purpose
Circuit diagrams, component interaction and purpose
Dynamics of modern system use

3. Examine the applications of pneumatic and hydraulic systems.

System applications:
Calculation of appropriate capacities and specifications
Applied functions of control elements
Design and testing of hydraulic and pneumatic systems
Fluid power in real-life examples
Valued component choice

4. Investigate the maintenance of pneumatic and hydraulic systems.

Efficiency of systems:
Efficient maintenance: accurate records and procedures to ensure efficiency
Functional inspection, modern techniques to limit production problems, quality control
Testing, efficient procedures to enable component longevity, recommendations
Fault finding, diagnostic techniques, effects of malfunctions, rectification of faults

Additional information

Workbooks

4

Assignments

4

Worked Solution

1

Workbook Sample

 

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