The course covers the special application of A/C systems such as vehicles air conditioning systems (aircraft, trains, ships, etc). The HVAC system of hospitals, clinics, towers will be included. Also, any specific updated and new topic in the field of HVAC & refrigeration will be covered. Refrigeration cycle theory, main components, operation, and maintenance of each system will be covered. The distribution systems of these systems will be covered. Basic control used in each system will be covered. Mechanical ventilation and environmental air quality applied with special HVAC systems will be discussed.