The high pressure side is the discharge side. It runs from the outlet of the compressor to the inlet of the measuring device. The low pressure side is the vacuum side. As you can probably guess, that part is the compressor.
It is true that the compressor is the “heart” of air conditioning and is the one that does the most work. However, please remember that many system problems do not originate with the compressor. When an early fault occurs in the compressor, it often means that there is another problem that has gone unnoticed. The air conditioner in a commercial HVAC system is very similar to that in a residential unit.
Its purpose is to dehumidify the air and eliminate heat. It's important to remember that the air conditioner itself does not cool the building, but works with many other subsystems to regulate the temperature. The condenser is the heat exchanger that serves as the hot side of the air conditioning unit. It removes heat from the building and transfers it to the outside.
The gaseous refrigerant is then converted to a liquid refrigerant. A heat pump can also have a condenser, in which case it functions to collect heat from outside. The expansion valve is an essential part of the condenser's function. It removes the pressure of the liquid coolant so that it can expand and convert the substance from liquid to vapor.
The expansion valve provides precise control of the refrigerant flow to the evaporator coil. Of all the different parts of the air handler, the evaporator coil is the most likely to need maintenance or replacement. The evaporator coil contains the cold refrigerant received from the compressor. As fan air passes through the coil, heat is removed from the air in the treated area.
Chillers come in both air-cooled and water-cooled varieties. Its function is to remove heat from the liquid that passes through the pipes of the structure. In an air-cooled chiller, the condenser coils are cooled with air driven by a fan, and the unit is usually located outdoors. Now that we have introduced you to the interior of your HVAC unit, we want to talk about the pressure of the head.
Head pressure is also sometimes referred to as discharge pressure or high side pressure. The compressor outlet side of an air conditioning unit generates this pressure and can be affected by many variables. For example, the size and speed of the condenser fan can influence head pressure, as can the overall condition of the condenser coil and its cleanliness. Finally, the size of the discharge line can influence the pressure of the spindle.
