Which of the following components is NOT part of a basic refrigeration cycle?

In a basic refrigeration cycle, the primary components include the compressor, condenser, evaporator, and expansion device. Each element plays a crucial role in the cycle, allowing for the transfer of heat from one location to another, effectively achieving cooling.

The compressor is responsible for compressing the refrigerant, raising its pressure and temperature. The condenser then dissipates heat from the refrigerant, allowing it to condense into a liquid state. The expansion device reduces the pressure of the refrigerant, enabling it to expand and cool before entering the evaporator, where it absorbs heat from the surrounding environment.

A heating coil, while related to thermal systems, is not a necessary component of the basic refrigeration cycle. Instead, it is typically found in heating systems or as part of heat pump systems where heat is required for heating purposes. Thus, the inclusion of a heating coil does not align with the standard refrigeration process, making it the correct choice as the component that is not part of a basic refrigeration cycle.