This chapter contains sections titled: Introduction Refrigeration Methods and Equipment Plate Contact Systems Immersion and Liquid Contact Refrigeration Cryogenic freezing Low Temperature Production Mechanical Refrigeration Cycle The Real Refrigeration Cycle (Standard Vapour Compression Cycle) Equipment for a Mechanical Refrigeration System Evaporators Condensers Compressors Expansion Valves Refrigerants Common Terms Used in Refrigeration System Design Cooling Load Coefficient of Performance (COP) Refrigerant Flow Rate Work Done by the Compressor Heat Exchanged in the Condenser and Evaporator Freezing Kinetics Formation of the Microstructure During Solidification Mathematical Models for Freezing Kinetics Neumann's Model Plank's Model Cleland's Model Effects of Refrigeration on Food Quality