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ICTD International Centre for Training and Development

Refrigeration Engineering & Technology

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This course is designed specially to improve the qualifications of the trainees in order to satisfy the requirements of the refrigeration engineering. The course deals with the maintenance and troubleshooting of Refrigeration systems.

The course including the principle of refrigeration cycles, refrigeration cycle components, different types of refrigeration systems, special tools and instruments for refrigeration technician, servicing of refrigeration cycle, service diagnosis and repairs, Inspection and maintenance of refrigeration components and system and testing and troubleshooting of refrigeration components.

This course covers all aspects of refrigeration operation maintenance & troubleshooting for systems used in industry. It also covers the latest technology in energy efficiency practices building automation systems. Maintenance management, and troubleshooting principles is very important for participants to learn it and return to their work to apply and implement maintenance programs for their system. This course includes a CD with practice quizzes that can be worked on your computer; however, this course does not require a computer.

Course Objectives

Upon successful completion of this course, the delegates will be able to:

  • Increase your understanding of refrigeration technology design principles and practices
  • Learn techniques too size and properly lay out system components
  • Find out how to design safer systems
  • Expand your knowledge of refrigeration
  • Receive a valuable set of refrigeration notes

Course Outline

Day 1


  • Review on systems : single stage, multi stage, swing
  • Single vs. Two-stage
  • Energy efficiency considerations for industrial refrigeration systems


  • Temper requirements
  • Load types : envelope, product, internal, equipment, infiltration
  • Psychometrics review
  • Sensible and latent loads
  • Infiltration loads : theory vs. Real-world
  • Rules-of-thumb


  • Types
  • Performance characteristics
  • Manufacturer’s rating methods
  • Selection process
  • Variable speed drive fans
  • Energy efficiency considerations

Day 2


  • Preliminary refrigeration system layouts
  • Load calculation
  • Evaporator selection/layout


  • Valve types and uses
  • Typical valve groups
  • Actuating methods – direct-acting, pilot-operated
  • Installation considerations
  • Safety considerations
  • Energy efficiency considerations

Day 3


  • Performance characteristics
  • Sizing considerations
  • Selection
  • Piping considerations – traps, vent line sizing, drainers
  • Fan alternatives : single-speed, two-speed, and variable speed
  • Energy efficiency considerations


  • Types : high-pressure receiver, thermosiphon, low-pressure accumulator, flash intercooler
  • Configurations : horizontal or vertical
  • Ratings
  • Proper practices for system integration
  • Knock-out velocity
  • Down-comer sizing
  • Refrigerant level control – floats, capacitance probes

Day 4


  • Pump types and performance curves
  • Net positive suction head : required and available
  • Pump selection
  • Energy efficiency considerations


  • Compressor technologies
  • Compressor ratings
  • Full-load and part-load operation
  • Oil cooler heat rejection methods (screw compressors)
  • Volume ratio (fixed and variable)
  • High state and booster selection
  • Energy efficiency considerations

Day 5


  • Sizing vapor lines (suction, discharge, hot gas)
  • Liquid line sizing
  • Wet return line sizing
  • Piping practices to minimize potential for hydraulic hammer
  • Riser pipe sizing methods
  • Energy efficiency considerations


  • Assessing the potential for heat recovery systems
  • Heat exchanger options

Course Methodology

A variety of methodologies will be used during the course that includes:

  • (30%) Based on Case Studies
  • (30%) Techniques
  • (30%) Role Play
  • (10%) Concepts
  • Pre-test and Post-test
  • Variety of Learning Methods
  • Lectures
  • Case Studies and Self Questionaires
  • Group Work
  • Discussion
  • Presentation

Who should attend

This course is intended for owners, plant operators, supervisors, engineers and designers. Attending this course will develop the skills and capabilities that will enhance the ability to be smart consumer of refrigeration engineering, design and build services. For contractors, attending this course will get the latest information on system design and operating practices. This course will give the delegates knowledge essential to achieve a competitive advantage.


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