3 Slot Linear Diffuser

  1. 3 Slot Linear Diffuser Sensor
  2. Linear Slot Air Diffuser
  3. Linear Diffuser Detail
  4. 3 Slot Linear Diffuser Kit
  5. Linear Slot Diffusers
  6. Slot Diffusers Vs Linear Diffusers

Model LSDLSD

Linear Diffuser: The Ultimate FAQ Guide What is a Linear Diffuser? Also called linear slot diffuser or slot diffuser in some places, a linear diffuser is a heating, ventilation, and air conditioning system accessory utilized in the delivery of air to a room. The diffusers play an instrumental role in the HVAC system, and they come in a wide range of shapes, sizes, colors and materials. 7.16 Linear slot diffuser ASMLD 18 7.19 Plenum slot diffuser ASMPD 21 AIR FLOW DATA 7.7 Supply linear slot diffuser - 20 mm: ASLD Tab. 7.1 9 7.9 Supply linear slot diffuser - 25 mm: ASLD-25 Tab. 7.2 11 7.11 Supply linear slot diffuser - 16 mm: ASLD-16 Tab. 7.3 13 7.13 Return linear slot diffusers - 20 mm: ARLD Tab. 7.4 15 7.14 Return linear.

Polyaire Linear Slot Diffusers are an attractive alternative to the ceiling or high sidewall supply diffusers. Slot diffusers can be installed individually in set lengths or in a continuous line. They can also be installed in any type of ceiling application.

The modules are available with a 20mm or 25mm Slot with the number of slots ranging from 1 to 8 slots and are further available as fixed or removable core. (Fixed Core - Model LSD-FC, Removable Core – LSD-RC.
The air pattern control is adjustable from the diffuser face and is achieved by means of an adjustable pattern control with each slot, enabling a full 180º air pattern adjustment. The suggested volume control should be from the main duct run take-off, or from a butterfly damper fitted to the inlet of the cushion head box.
Construction is from extruded aluminium and the recommended maximum length for each section is 3 metres. Standard finish is powder coat white while other finishes are available to suit the interior and architectural design requirements.

Fixed Core Linear Model LSD
Sizes Available/Dimensions
20mm slot25mm slot
No of slotsNeck sizeFace sizeBox sizeNeck sizeFace sizeBox size
134mm81mm45mm39mm86mm50mm
267mm114mm79mm77mm124mm89mm
3100mm147mm111mm115mm162mm127mm
4133mm180mm145mm153mm200mm165mm
5167mm214mm176mm192mm239mm205mm
6200mm247mm212mm230mm277mm241mm
7233mm280mm245mm268mm315mm280mm
8267mm 314mm279mm308mm355mm318mm


Removable Core Linear Model LSD-RC
Sizes Available/Dimensions
20mm slot25mm slot
No of slotsNeck sizeFace sizeBox sizeNeck sizeFace sizeBox size
145mm85mm55mm50mm90mm60mm
278mm118mm89mm88mm128mm99mm
3111mm151mm123mm126mm166mm137mm
4144mm184mm150mm164mm204mm175mm
5178mm218mm189mm203mm243mm214mm
6211mm251mm222mm241mm281mm252mm
7244mm284mm255mm279mm319mm290mm
8278mm318mm289mm319mm359mm329mm


Slot Type Diffusers
Type LSD - Selection Data

Two Way Blow
L/s per metre2 slots wide4 slots wide6 slots wide8 slots wide
31 Blow in m.1.83---
Pressure drop (Pa) 2.5---
Suitable N/C level less than 25---
47 Blow in m. 2.74---
Pressure drop (Pa)5---
Suitable N/C levelless than 25---
62Blow in m.3.352.13--
Pressure drop (Pa)102--
Suitable N/C level25less than 25--
78Blow in m. 3.96 2.74--
Pressure drop (Pa)20 2.5--
Suitable N/C level30less than 25--
93Blow in m.4.88 3.05 2.13 -
Pressure drop (Pa) 25 2.5 -
Suitable N/C level 32less than 25less than 25-
108Blow in m.5.83.662.44 -
Pressure drop (Pa)32.47.52.5-
Suitable N/C level35less than 25less than 25-
124Blow in m.6.73.962.74 2.44
Pressure drop (Pa)401052.5
Suitable N/C level 38less than 25less than 25less than 25
139Blow in m.-4.573.05 2.44
Pressure drop (Pa)-12.552.5
Suitable N/C level-less than 25less than 25less than 25
155Blow in m.-4.883.662.74
Pressure drop (Pa) -17.47.52.5
Suitable N/C level
-25less than 25less than 25
170Blow in m. -5.53.963.05
Pressure drop (Pa) -27.47.55
Suitable N/C level -3025less than 25
186Blow in m.- 6.1 4.26less than 25
Pressure drop (Pa)- 34.9 10 5
Suitable N/C level- 30 25 25
217Blow in m.- - 4.883.96
Pressure drop (Pa)- - 12.57.5
Suitable N/C level- - 30 25
248Blow in m.- -5.5 4.57
Pressure drop (Pa)- - 17.410
Suitable N/C level- -30 28
279Blow in m.- - 6.7 5.5
Pressure drop (Pa)- - 22.412.5
Suitable N/C level - -32 30
310Blow in m.- - 7.62 6.1
Pressure drop (Pa) -- 25 14.9
Suitable N/C level -- 35 32


Slot Type Diffusers
Type LSD - Selection Data

One Way Blow
L/s per metre1 slots wide2 slots wide3 slots wide4 slots wide
16 Blow in m.1.83 - --
Pressure drop (Pa)
2.5 ---
Suitable N/C levelless than 25---
31Blow in m. 3.42.1 - -
Pressure drop (Pa) 1010 - -
Suitable N/C levelless than 25less than 25--
47Blow in m.4.93.02.1-
Pressure drop (Pa)257.52.5-
Suitable N/C level25less than 25less than 25-
62Blow in m.6.74.02.72.4
Pressure drop (Pa)401052.5
Suitable N/C level30less than 25less than 25less than 25
78Blow in m.- 5.2 3.72.7
Pressure drop (Pa)- 15 7.52.5
Suitable N/C level-less than 25less than 25less than 25
93Blow in m.-6.14.33.4
Pressure drop (Pa)-22105
Suitable N/C level-25less than 25less than 25
108Blow in m.-7.34.94.0
Pressure drop (Pa)-3012.57.5
Suitable N/C level-30less than 25less than 25
124Blow in m.--5.54.6
Pressure drop (Pa)--17.510
Suitable N/C level--25less than 25
139Blow in m.--6.75.5
Pressure drop (Pa)--2212.5
Suitable N/C level--30less than 25
155Blow in m.--7.66.1
Pressure drop (Pa)--2515
Suitable N/C level--3230
  • Different material thicknesses to meet economical and luxury demands
  • Outdoor color powder coating to be more resistant for tough environments
  • Custom designing based on different projects

Biyang Linear Diffuser, a type of HVAC diffuser, also called as Linear Slot Diffuser, Linear Bar Diffuser, or Linear Air Diffuser is made of out excellent quality extruded aluminum with powder coating or anodizing surface treatment. These slot air diffusers are designed and made in different elegant and attractive shapes and various sizes. Biyang Linear Air Diffuser is a cost competitive and excellent solution to efficient, steady, and consistent air supply and return in the HVAC ventilation system for both residential and commercial buildings and houses.

As a leading Linear Slot Diffuser Manufacturer, Biyang has different options. Biyang Linear Diffuser provides 0.8mm, 1mm, and 1.2mm thickness aluminum extruded material options to meet the economic and high-end demands from different customers. In addition, the horizontal, angled and vertical air flow can be achieved with our linear slot air diffusers. The blades angles can be altered to meet the specific direction demands.

In this way, our Linear Diffuser can work as Linear Ceiling Diffuser(or Ceiling Slot Diffuser) as well as Linear Floor Diffuser. The most popular items are 3 slot Linear Diffuser, 2 slot Linear Diffuser, and single slot Linear Diffuser. Unusual items, such as 4 slot diffuser, are also available. Customized Linear Diffusers can be made in different lengths or in a continuous line based on the actual requirements. For slot diffuser details, you can download our catalogue for checking.

Biyang Linear Diffuser can be made in different colors based on RAL color standard, with most often used RAL9010 and RAL9016. Our outdoor powder of surface treatment makes our Linear Diffuser more durable, and much steadier than common powder coating products. This is extremely important when the environment is in bad conditions, such as places next to sea, or random sunshine or lighting reflected on products and so on.

Biyang provides all kinds of accessories for Linear Diffuser, such as plenum box, specifically designed to connect flexible ducts to our Slot Diffuser to fit different kinds of air conditioning cooling or heating systems. With all ducting accessories, Biyang Linear Diffuser can work as the adjustable linear air diverter for both supplies and return functions. If you have any questions or doubts for Linear Diffuser, please feel free to send us an inquiry.

ProductLinear Diffuser
MaterialAluminum
Thickness0.8mm, 1.0mm, 1.2mm
ColorWhitepowercoatedRAL9010/9016
SizeOn request

Linear Diffuser: The Ultimate FAQ Guide

What is a Linear Diffuser?

Also called linear slot diffuser or slot diffuser in some places, a linear diffuser is a heating, ventilation, and air conditioning system accessory utilized in the delivery of air to a room.

The diffusers play an instrumental role in the HVAC system, and they come in a wide range of shapes, sizes, colors and materials.

Unlike conventional round or square diffusers, a linear slot diffuser has a long narrow design.

3 Slot Linear Diffuser Sensor

The special design enables HVAC technicians to install these kinds of diffusersinto tight spaces.

It also assists to hide the linear diffuser from view to set up a more aesthetically amusing design.

Linear diffuser

How do you Size a Linear Slot Diffuser?

In an HVAC ductwork system, linear diffuser helps to deliver the air to each area.

The slot diffuser distributes the air throughout the space.

The size of the linear diffuser is the diameter of its neck to which you connect the flexible duct.

You determine the size of the linear slot diffuser you require for you HVAC application by:

  • Space to be heated or cooled
  • Measurements of the space length and width
  • Height of the ceiling
  • Aesthetics of the area

Undersized linear slot diffusers will obstruct airflow and generate noise while on the other hand, larger slot diffusers will deliver more air with reduced static (resistance to airflow).

In addition, oversized linear slot diffusers can appear out of place, thus correct sizing is crucial.

Linear Slot Air Diffuser

What is the Use of Linear Diffuser?

Linear slot Diffusers are a familiar component of most heating, ventilating, and air-conditioningsystems.

They find application in both air-water and all-air HVAC systems, as component of room air supply subsystems, and play various roles:

  • Usually to make the air jets to adhere to a ceiling or other surface, making use of the Coandă effect
  • To produce low-velocity flow of air in the occupied section of room.
  • To boost mixing of air discharged from the HVAC system and air in the room.
  • To supply both ventilating and conditioning air
  • Uniformly distribute the air flow, in the required directions
  • Fulfil the above while generating the least amount of noise

Linear Diffuser Detail

What is the Difference between Linear Diffuser, Grille, and Register?

· Grille

A grille is a punctured lid for a HVAC air duct.

They in some cases have louvers which direct the flow of air into the space.

Unlike a register or linear diffuser, a grille has no attached damper and, in almost all cases, does not have moving parts.

Nonetheless, you can use a grille for both supply air and return air.

But, it is not the same case with a linear diffuser or register.

· Register

A register is a grille having moving parts, able to open and close and the flow of air directed.

The size and placement of registers is crucial to your HVAC system efficiency.

In addition, registers are also fitted with dampers which are instrumental, and can serve a safety role.

Register is used to only supply conditioned air.

· Linear Diffuser

A linear diffuser is a register with enhanced capabilities, purposely used to supply conditioned air into a space in a particular direction, specific path, or spreading pattern.

The diffusers normally have several air distribution slots which can play a role in blending them into the surface you mount them into, and they come in different designs.

The common location for linear slot diffuser is the ceiling, and they have a horizontal flow of air.

Is Ceiling Diffuser same as Linear Diffuser?

Linear diffuser

Ceiling diffuser and linear diffuser are significantly similar and among the few visible components of a HVAC system.

Commonly installed in a residential or commercial building, their role is to uniformly distribute conditioned air in every part of a room.

Ceiling diffuser drives the name from where it is installed in a building.

They distribute air evenly in a room.

Like other diffuser systems, you can have ceiling diffuser in the duct terminal in every room.

It allows for free circulation of air.

What Design Parameters Affect HVAC Linear Diffuser Efficiency?

There are a number of key factors that affect the efficiency of a linear slot diffuser.

They include: performance and design.

Linear slot diffuser performance influence numerous aspects of your home air conditioning.

The right slot diffuser will affect the maximum space, establish maximum comfort at the same time ensuring maximum efficiency.

It will as well be modestly noisy.

Throw” and “drop” are important design parameters that impact the efficiency of linear diffusers.

Throw is defined as the distance the air moves from the face of the slot diffuser.

“Drop” on the other hand, is the distance of impact from the diffuser face downward into the room.

Drop in most scenarios affect the comfort of the room.

An insufficient amount of drop will lead to a feeling of a rush of air in a specific space in the room.

An efficient linear diffuser will let the air to move out and along the ceiling prior to flowing downward into a space, generating a general better and more harmonious comfort level.

Additionally,“Spread” as well affects the general impact of an HVAC system.

Spread is defined as the horizontal effect of the air coming out of the duct.

The broader the spread, the lower the drop.

This can boost the comfort in the space being air conditioned.

In general, lower drop is better since it will do away with a drafty condition and eliminate cool and hot points in the same room.

Of course you should realize that all these design parameters are influenced by the HVAC system itself and the airflow generated by the system.

A Linear diffuser has the capability to assist though it is not a be-all and end-all solution.

Therefore, when selecting a linear diffuser, consider all these design parameters and how they suit the design of the space you want to install them.

What Should You Consider when Selecting Liner Diffuser?

Choosing a linear diffuser for your HVAC system goes beyond just picking what appears right in your space.

Here are some of the factors to consider when choosing a linear slot diffuser:

  • Room size – The size of your space can determine the suitable linear diffuser to select for your application.

Large rooms for instance will require longer slot diffusers, while smaller linear diffusers are appropriate for more compact spaces.

The size of room can also aid you establish the number of linear diffusers you will need to install to give sufficient air conditioning.

  • Room configuration – Is the space you want to air condition an ordinary square room or is it of unconventional layout?

Factor in the configuration of your living space to establish which directions you want the air to flow in and the type of linear diffuser that can facilitate the airflow.

  • Room style – Some linear diffusers are more conspicuous and recognizable than others, this makes it difficult to integrating them in an existing room design.

When maintaining the style and aesthetic of your room is key, then linear diffusers with negligible visual effect will be your best alternative.

  • Type of HVAC – Some diffusers perform with certain types of ducted HVAC systems (for example linear diffusers for ducted HVAC behind walls), thus ensure your linear diffuser of choice is consistent with your system.
  • Airflow requirements – Do you aim to focus airflow in specific sections of your space?

Or do you simply require overall air-conditioning in your room?

Some linear slot diffusers offer targeting abilities that give the ease to regulate the volume and direction of the flow of air in your room.

What are the Benefits of Linear Diffuser?

Linear slot diffuser has several advantages over conventional round or square diffusers:

  • Slot diffuser is an unobtrusive mechanism to deliver air to your living space. With their unique design, linear diffuser fit well with existing finishes.
  • Linear diffusers equally give a high degree of control over the layout and design of your space, and enables you to use fewer linear slot diffusers while delivering same amount of airflow.
  • Linear diffusers provide a high level of thermal comfort because of fast mixing of room air and supplied air by greatly inductive individual jets and an even and optimal flow fresh air across the room.
  • Linear diffusers are narrow and long, unlike the round or square diffusers. This special design makes it easy and possible for HVAC technicians to install them into confined spaces, and aid in hiding the diffusers from view to produce a more aesthetically appealing design.

What does RAL Code Mean in Linear Diffuser Coloring?

RAL code describes the coating or paint of the linear diffuser.

Manufacturers provide approved RAL products with a hologram so as to make it difficult producing unauthorized versions.

Imitations may exhibit different color and hue when scrutinized under various sources of light.

RAL color standard is a European color matching mechanism which describes colors for plastics, coatings and paint.

The color matching system is managed by the RAL DeutschesInstitutfürGüte­sicherung und Kennzeichnung.

The goal of the system was to homogenize technical descriptions and conditions of supply of all sorts of goods.

Which other HVAC Accessories that Come with Linear Diffuser?

Linear diffuser

  • Connectors (pull pins)

These are linear diffuser accessories that help in the connection of individual slots.

Usually they come in the standard delivery package of the ordered linear slot diffuser.

  • End seal

Continuous linear runs need an end seal on every end to make sure there is no leakage of air.

The accessories can either be fitted by the manufacturer or installed by others.

Single linear diffusers need end seals on both ends, and they are only appropriate for slot diffusers not having extended border.

What Material is used to make Linear Slot Diffuser?

Linear slot diffuser is an instrumental component of any HVAC system for the supply of conditioned air, which makes the space or room more comfortable to be in.

The following are the common materials used to make linear diffusers:

  • Aluminum
  • Stainless steel
  • Mild steel
  • Plastic

The materials can be designed and used to fabricate linear slot diffusers of various sizes and elegant and appealing shapes.

What are the Important Parts of a Linear Diffuser?

Linear slot diffuser

· Internal deflectors

Built-in deflectors fabricated from plastics.

Deflectors facilitateconstant adjustment of the direction of the discharged air within 360° scope as well as control the flow rate of supply air.

The internal deflectors also facilitate complete shutting of the linear diffuser.

· Slot box

This is a specially designed plenum box which houses the diffuser.

· Damper

Flow rate control damper placed at the inlet spigot of the linear diffuser, to enable adjustment of the required air flow rate.

· Goalpost brackets

The purpose of this part is to hold the linear diffuser within the slot box.

Goalpost brackets hold the slot diffuser utilizing bolts tightened via sliding spacer segments built into the diffuser.

· End caps

End caps crown the appearance of the linear diffuser.

They usually come in the same finish as slot diffuser and are factory fitted.

· Equalizing plate

Equalizing plates are fixed into the body of the linear diffuser, and serve the role of equalizing the pressure all through.

This leads to a more consistent flow of air across the space.

Equalizing plates are effective when utilizing a long slot diffuser having only a small number of valves in the plenum box.

3 Slot Linear Diffuser Kit

Why is Biyang the Best Linear Diffuser Manufacturer?

3 Slot Linear Diffuser

Biyang Linear Air Diffuser is fabricated from top quality extruded aluminum with anodizing surface treatment or powder coating.

Our linear slot diffusers come in different designs and sizes with stylish and stunning shapes.

Biyang Linear Air Diffuser is an affordable and perfect solution to effective, steady, and even supply of air in HVAC systems.

You can use the diffusers in both residential, commercial, and industrial buildings.

How do You Adjust Pattern Controllers in Linear Diffuser?

Standard manually movable pattern controllers within the linear slot diffuser direct the flow of air vertically or horizontally as desired.

Linear Slot Diffusers

Horizontal blow is normally used for cooling while vertical blow is for heating.

In some cases you may use vertical blow for both cooling and heating along a window façade.

You make the adjustment by manually flicking the pattern controllers of the diffuser to the vertical posture or to either side.

To generate a powerful jet of air downwards simply arrange the blades as exhibited in the center set up shown below.

Blades

For a left directional throw, draw out the right hand side deflector blade from the airflow path and stretch out the left blade.

This produces a low pressure region below the stretched out blade, leading to the air being thrust to the left when it gets discharged from the linear diffuser.

For a right directional throw, remove the left hand side deflector blade from airflow and extend the right blade.

This creates a low pressure zone under the extended blade, causing air to be forced right when it leaves the diffuser.

Can Biyang Manufacture Custom Linear Slot Diffuser?

Slot Diffusers Vs Linear Diffusers

Absolutely, Biyang can produce customized Linear Diffusers of different lengths.

Both short linear and continuous line and of different structural designs based on your specifications and requirements.

What is the Color of Biyang Linear Air Diffuser?

Biyang Linear Diffusers come in various colors based on RAL color code, with the frequently applied RAL9010 and RAL9016.

Our surface treatment for outdoor application makes Biyang linear slot diffusers long-lasting and much steadier compared to traditional powder coating products.

Can Linear Diffuser Improve Quality of Air in HVAC System?

Yes, diffusers are perceived to enhance the circulation and blending of existing air and the conditioned air within a room.

This results in thermal balance within the space thus improved indoor air quality.

What is the Structural Design of Linear Diffuser?

Linear slot diffusers are available in a number of structural designs based on your needs, with the most common structure being:

  • Curved Linear Diffuser (Concave or convex)
  • Straight Linear diffuser
  • T-bar linear slot diffuser

What is Benefit of Linear Diffuser with Adjustable Blade Angles?

The presence of Adjustable blade in linear slot diffuser makes it possible to direct air in different directions if needed by the installation.

The air flow orientation can vary from vertical to horizontal.

The adjustable blade angles provide the flexibility needed to overcome issues associated with supply of conditioned air, such as cool and hot spots within the same space.