Course Description

An in-depth study of refrigeration and the design, operation, maintenance, and repair of environmental control systems. The impact of refrigerants regarding ozone depletion and global warming is covered in detail. [Lab time required]

This course consists of three 1-hour classes a week for a semester, six 3-hour labs with practical assessments, and a comprehensive final exam.

Entrance requirements

  • Explain the concept of a closed cycle
  • Explain the steam cycle and its use of superheat and sub-cooling within the cycle
  • Explain and define sensible heat and latent heat
  • Calculate formulae using simple algebra
  • Display their knowledge OF pumps and valves (as learned in Auxiliary machinery)

STCW Objectives

Demonstrate knowledge and understanding of the following STCW elements:

  • OICEW-A4.1 Basic construction and operation principles of refrigeration, air-conditioning and ventilation systems
  • OICEW-A4.3 Preparation, operation, fault detection and measures to prevent damage for refrigeration, air-conditioning and ventilation systems

Demonstrate proficiency in the following skills:


  1. Introduction / History / Safety
  2. Basic Refrigeration Cycle
  3. Ideal Gas Law / Pressure Temperature Charts
  4. Vapor Compression Systems
  5. Refrigeration System Characteristics and System Design Calculations
  6. Properties of Refrigerants
  7. Refrigerant System Lubrication
  8. Refrigerant Recovery
  9. Compressors
  10. Flow Controls
  11. Rules and Regulations
  12. Condensers
  13. Evaporators
  14. System Troubleshooting
  15. Low pressure systems & Chillers
  16. Pressure switches & Thermostats
  17. Heat Pumps
  18. Psychrometrics
  19. Heating, Ventilation, and Air Conditioning
  20. Containerized Refrigeration

Other objectives

  • Explain the purpose and interrelations of the components of a refrigeration system
  • Explain the basic construction and operating principles of refrigeration, air-conditioning and ventilation systems.
  • Properly prepare, start, operate, fault detect and determine through measurement the operating status of refrigeration systems system to ensure damage prevention.
  • Determine the refrigerant used in a system
  • Explain the process to perform leak detection, system maintenance and repair
  • Safely recover, evacuate, recharge a system
  • Calculate required refrigeration load

For more information, see