How do refrigeration systems work?

Refrigeration systems operate by removing heat from an enclosed space and transferring it outside, thereby lowering the temperature inside. This process typically involves a refrigerant, which absorbs heat as it evaporates in the evaporator coil, and releases heat as it condenses in the condenser coil. A compressor circulates the refrigerant through the system, maintaining pressure changes that facilitate the heat absorption and release cycles. The overall process relies on the principles of thermodynamics, specifically phase changes of the refrigerant.