Final answer:
A refrigerant distributor in AC and refrigeration systems controls pressure, working with the expansion valve before the refrigerant enters the evaporator coils. It does not regulate temperature, filter impurities, or manage humidity.
Step-by-step explanation:
The question concerns the function of a refrigerant distributor in air conditioning (AC) and refrigeration systems. Besides distributing the refrigerant evenly, the correct option that a refrigerant distributor also does is C) Controls pressure. It does not regulate temperature, filter impurities, or manage humidity directly. The refrigerant distributor works in conjunction with the expansion valve to reduce the pressure of the refrigerant before it enters the evaporator coils, ensuring an appropriate flow rate and further cooling of the refrigerant. The evaporator, as part of the refrigeration cycle, is where the liquid refrigerant absorbs heat and converts into a gas, which is then compressed by the compressor, raising its temperature and pressure. This high-pressure gas is then cooled in the condenser, where it releases heat and changes back into a liquid.