PTQI

Refrigeration and Air-conditioning Courses

Level: beginner ( Basic fundamentals)

Duration : 8 weeks

Capacity: 12 participants

Frequency: 4 -5 times a year


  • Domestic Refrigeration

    Theoretical aspect:

    • vapor compression systems and components.

    • analyze and evaluate thermodynamic processes of simple refrigeration systems.

    • Mechanical cycle.

    • Electrical cycle (primary coil type devices - transformers and motors. Electrical circuit protection devices).

    Practical aspect:

    • Review of safety.

    • Fridge, freezer and water cooler components.

    • Compressor ( installation, testing … etc).

    • Electrical parts ( concept, testing, troubleshooting … etc).

    • Refrigerators types.

    • Piping Practices (an overview of piping materials and accessories as well as installation practices).

    • System charging and vacuum.

    • Leak detectors and recovery unit.

    • Refrigeration Project (assemble a refrigeration system inclusive of all required piping & accessories).

  • Commercial Refrigeration Systems (one and three phase)

    Theoretical aspect:

    • One phase systems (parts and concept).

    • Three phase systems (parts and concept).

    • Mechanical and electrical cycle operations

    • Refrigeration controls (understanding of metering devices).

    • Blueprint Reading (mechanical system representation, symbols, scales and fundamental drafting technique).

    Practical aspect:

    • Review of safety.

    • System installation (one and three phase).

    • Gas handling procedures.

    • Mechanical and electrical troubleshooting.

    • Assemble and disassemble of commercial compressors.

    • Charging and discharging the system ( using recovery unit).

    • Leak detectors and recovery unit.

    • Refrigeration Project (assemble a complete system inclusive of all required piping & accessories.).

  • Air-conditioning Systems

    Theoretical aspect:

    • Psychrometric chart (principals and concept).

    • Heat loads ( principals, concept and calculation).

    • Mechanical cycle (window and split units).

    • Electrical circuit (window and split units).

    • Heat pump ( reverse cycle).

    Practical aspect:

    • Review of safety.

    • Mechanical cycle (installation, testing … etc).

    • Electrical circuit (connecting, testing … etc) .

    • Heat pump (installation, troubleshooting).

    • Charging and discharging the system (using recovery unit).

    • Leak detectors and recovery unit .

    • Refrigeration Project (installing a complete A/C system.

    • inclusive of all required piping, accessories, vacuum … etc.).

    • Lab experiments using computer linked A/C system.

  • Tel: 021 4833771–75 / (Ext: 282)
    Fax : 021 4833770
    Website / www.ptqi.edu.ly
    hvac@ptqi.edu.ly

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