First law of thermodynamics; second law of thermodynamics; Carnot cycle; energy; entropy and basic of heat transfer. Thermodynamics process, basic refrigeration, vapor compression refrigeration, refrigeration cycle, cooling load calculation, others additional refrigerating devices which are flash tank, intercooler and cooling tower, others refrigeration systems, psychometric chart and ambient control, piping and air duct design and air ventilation, refrigeration for food reservation.