The design and use of ducted split systems

One of the most popular and commonly used types of air conditioning systems for summer and winter climate control and heating are duct splits or channel splits. The design and implementation of split duct ducting are one of the most crucial steps in the design and implementation of duct splits because improper channel design and implementation will reduce the device's performance and efficiency, cause improper distribution of warm or cool air, and result in energy loss. Stay with us until the end of the post for more details.

Important points about Ducted Split ducting

One of the most popular and commonly utilised air conditioning systems for summer and winter climate control and heating are ducted splits or channel splits. The design and implementation of Split Duct ducting are one of the most crucial steps in the design and implementation of Ducted Splits because poor channel design and implementation will decrease the device's performance and efficiency, result in improper distribution of cool or warm air, and result in energy loss. Stay with us until the end of the post for more details.

Employing a channel made of the proper material and having the proper dimensions (a calculator is typically used to calculate the necessary dimensions of each segment of the split duct channel based on the volume and speed of the required passing air).
When changing the channels' direction, avoid utilising angles more than 15 to 20 degrees and remember to account for the inner arcs' radius, which should be at least half the channel's width in each segment.
Take into account the amount of energy lost.

Important note: If the return ducting is not implemented to return the air to the split duct evaporator (panel installed on top of the false ceiling), it is necessary to have a foot valve at the bottom of the door of each room to enable the return air flow in time. The door of the room should be closed.

Different Ducted Split Channel Types

Split duct channels typically come in the following four categories and are round or square in shape.

Spiral channel
flexible channel
Galvanised pipe
the polyurethane channel

The distinction between square and circular channels

Galvanised and polyurethane channels are square in form, whereas flexible and spiral channels are round. The distinctions between circular and square channels will be covered in this section.

Circular channels have more physical and design restrictions than rectangular channels.
Square channels have a higher risk of leaking than circular channels.
In comparison to square channels, circular channels utilise less material.

Flexible channel

There are several reasons why flexible channel or hose is utilised in split duct channelling as well as in the construction of buildings. Some of these reasons are listed below.

Unrestricted installation space and design flexibility.
Re-insulation is not necessary because the flexible tube is already insulated with elastomeric, polyethene, polyester, and glass wool.
No special tools are required for installation, making it quick and simple.
Easy to handle and light in weight.
really simple to alter.
withstands fire.
inexpensive installation.

Spiral channel

Another circular channel that is frequently galvanised is the spiral channel. Due to the lack of elasticity in the spiral channel, which makes it less flexible than the flexible channel, they are typically employed in industrial settings rather than residential buildings.

Square galvanized ducting

The galvanised split duct type (four ears), which is identical to the water cooler channels but has smaller dimensions, is one of the earliest channelling techniques. Elastomeric insulation, which is quite expensive, can be used to insulate this kind of channel. However, because it is so accessible and simple to channel, it is still in use.

Polyurethane channelling

Another type of rectangular channel is polyurethane, which is made of cold injection foam with internal and external covers made of aluminium, which are also known as pre-insulated channels; Some of the advantages of using polyurethane channels in split duct channelling are as follows.

No need for re-insulation
High installation speed
low weight
Low-cost installation

The only drawback of these channels is the flaking of their internal and external coatings, which happens gradually after about three years.

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Final speech

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