Refrigeration systems are an integral part of any commercial building, as we all rely on these systems to ensure a healthy indoor environment for us and our goods, electronic devices and systems. A/C units use refrigeration to chill indoor air through a process that uses refrigerant.
Phase conversion is employed by these systems by forcing special chemical compounds to evaporate and repeatedly condense in a closed system of coils. To cool efficiently, air conditioning units must convert the refrigerant gas back to a liquid again. This refrigerant flows through a compressor, which then raises the pressure of the refrigerant, and passes it through the condenser, where it condenses from its vapor form into a liquid form, discarding heat and drawing it from the region that is to be cooled. A/C units also contain fans that move unwanted warm indoor air over and past cold, refrigerant-filled coils. Central A/C systems contain an entire system of ducts that are specifically designed to channel air to and from these air-chilling coils.