The air ducts are the elements of an air conditioning installation, through which we distribute the treated air between the air conditioning device and the conditioned spaces. They can also extract stale air from a room or introduce new air from outside.
To achieve their objective, the air ducts must be dimensioned within the available space in order to adequately control speed, sound level, pressure drops, as well as heat losses or gains, in addition to avoiding leaks.
The most widely used flexible air ducts are made of two sheets of PVC or aluminum, with an intermediate insulation and a spiral steel wire armor to keep the part circular. They are used as connecting sections from the main conduit to the terminals or outlets, with a maximum length that is recommended not to exceed 39.3 inches due to the possible loss of load or noise production.
Duct distribution systems are classified according to two parameters:
They are classified according to the type of fan that fits in the system:
Depending on their function, the ducts receive the same name as the air they carry.
Ducts are the best option whenever we have to acclimatize more than one room, and this is due to several reasons.
The first thing that comes to mind is the financial savings of not having to buy more than one air conditioner, and the fact that the ducts do not have an expiration date. Then, the time and space that the installation of more than one device would entail.
No less important is energy saving, since the greater energy efficiency derives from the fact of working with a single large-capacity external unit instead of several of lower power. This allows us to ‘zoning’ or the ability to regulate the temperature and air flow in each space, in addition to representing great savings at an economic level.
Usually, we place the air conditioners outside and move the air through them, from one room to another, through ducts that are placed in false ceilings, in this way, the air will reach the different rooms through a grid that reduces noise and controls air flow.