The SMARTEMP Perforated Multistream Diffuser, type PMW-AD, is a side-wall diffuser that provides high levels of draught-free thermal comfort in such spaces as hotel rooms, apartments, restaurants and commercial offices. The design is both aesthetically pleasing and technically advanced. Unlike standard side-blow air grilles, which produce broad, low momentum air bundles that mix poorly with room air, the PMW-AD discharges a multitude of individual, high momentum air streams, each one of which is highly inductive. These produce largely uniform temperature distribution with low draught-risk throughout the occupancy space. Thermal comfort levels are high even when airflow rates are high.
Mixed flow discharge
High induction discharge intensely mixes supply air with room air. Strong supply air dilution with rapid discharge velocity decay produces draught-free, high momentum supply air motion of uniform temperature distribution over short or long throws. Ideal for enhanced thermal comfort (ADPI ≥ 90%).
Also suitable for use as a return air inlet. Wall location: Air supply from sidewall, bulkhead or side of duct.
Low temperature supply
May be used for low temperature (cold air) supply systems (Tsupply ≈ 10 °C), where ∆Tsupply-room ≥ -12 K.
VAV dependent throw
VAV turndown to approximately 50% @ ∆Tsupply-room ≈ -12 K, with throw dependent upon airflow rate.
Multistream jets are individually adjustable, providing air pattern direction, spread and throw adjustment for up/down, left/right, short, medium or long throw.
Manual air pattern adjustment through diffuser face by means of an Allen key avoids inadvertent changes to discharge pattern setting (eg by cleaners).
Rectangular face shape
Height from 134 to 251 mm. Standard width options: 612, 950 and 1490 mm. Bespoke widths: 207 to 1490 mm.
Perforated face pattern
Discharge through perforated metal face with 60° stagger.
Black recessed adjustable discharge elements.
Perforated metal finish in extruded aluminium frame, painted to colour of choice.
Airflow rate range
International patent applications and granted patents are listed at smartemp.com/patents.
The SMARTEMP Perforated Multistream Diffuser, type PMW-AD, is a high induction sidewall diffuser. Multi-stream airflow is discharged by a multitude jet elements of differing discharge direction, each manually adjustable to alter the diffuser air pattern.
High levels of draught-free thermal comfort are provided by the multitude of highly inductive individual air streams discharged from its perforated face. It is well suited to high comfort applications such as hotel rooms, apartments, restaurants, aged care and offices.
The patent pending design discharges a multitude of individual, high momentum free air streams. The discrete discharge direction of each air stream maximises induction. High induction intensely dilutes the supply air with room air to produce rapid discharge velocity decay combined with a strong increase in the supply air stream mass flow rate.
The advantages of high induction discharge include improved air temperature distribution with low draught-risk, and make the diffuser suitable for both long throws (due to the high momentum of the air stream ) as well as short throws (due to the low air stream velocity).
The SMARTEMP PMW-AD diffuser is suitable for substantially CAV systems (turndown to no less than 50%) including low temperature supply air systems in which supply air temperature is ≥ 10 ⁰C and ΔTsupply-room ≥ -15 K. Enhanced levels of draught-free comfort are achieved, with air diffusion performance index values (ADPI) typically in excess of 90%.
The SMARTEMP PMW-AD Perforated Multistream Diffuser is available in selected markets as the LTG Freistrahl-Wanddurchlass ILF.