What is a DX unit?
A direct expansion air conditioning unit, also called a DX unit, cools indoor air using a condensed refrigerant liquid. It is the type of air conditioning unit most commonly used in homes in the United States.
How does DX unit work?
The DX Air Conditioner system uses a refrigerant vapor expansion and compression cycle to cool air coming in through a supply plenum and returns it to the area that needs cooling through the return. … Another key feature of DX Packaged units is the advantage of having the entire cooling system self-contained in one unit.
How many types of chillers are there?
There are three different types of chillers:(1) air, (2) water, and (3) evaporative condensed chiller. There are four subcategories in each of the above categories for industrial chillers: (1) reciprocating, (2) centrifugal, (3) screw driven (4) and absorption chillers.
What is a RTU HVAC?
The RTU (Roof Top Air Handling Unit) provides Heating, Ventilation, and Air Conditioning (HVAC) to the space below. Air Duct Smoke Detectors (Duct Detectors) can be inside the RTU or in the air ducts below the RTU.