Supply Air Diffuser Sizing

Use a round diffuser with overlapping stepdown rings with a butterfly damper.

Supply air diffuser sizing.

Curved blade ceiling sidewall registers and grilles have straight louvers to force the air straight into the space with no turning at all at the face. Multi louver models control air volume. Acd1 d iso 9001 certified company. The size of the aircon diffuser is the diameter of the neck to which the flexible.

This is commonly considered to be the air within an envelope of 50 fpm 0 25 m s or greater velocity. The diffuser shown above is a typical tiered acoustical ceiling 2 x2 lay in supply diffuser. This air provides the motive force for room air motion. The ceiling diffuser may be used as a supply air diffuser or as a return air diffuser according to the application designed.

This special shape makes it easy for builders to fit the air con diffuser into a tight space and helps to conceal the diffuser from view for a more aesthetically pleasing design. If you start by using 100 of the nominal airflow you will end up with high losses in performance acoustical problems and very little or no design flexibility. For lower velocity supply air e. Floor supply of cool air and ceiling return provided that 1 0 the 0 8 mys 150 fpm supply jet reaches at least 1 4 m 4 5 ft above the floor.

Total air total air is defined as the mixture of primary air and entrained room air which is under the influence of supply outlet conditions. Most underfloor air distri bution systems comply with this proviso. Air discharged by the supply outlet. Diffusers supply air square ceiling diffuser model.

A square diffuser provides high volume air diffusion. Perforated ceiling diffusers p4w size 535x535 size 235x235 size 385x385 1 10 100 1 0 1 0 0 500 50 10 0 0 s t a t i c p r e s s u r e pa air flow l s 04 multi pattern ceiling diffusers ceiling diffusers ordering key. Overall size l 140mm n neck size l 10mm l listed size duct size false ceiling opening size l 80mm 33 5 50 35 33 two way throw 6 2. It can be used to direct air in multiple directions.

0 8 mys 150 fpm supply air jet reaches to within 1 4 m 4 5 ft of floor level. Suitable for return air applications. Supply air diffusers return air diffuser never do this. Hart cooley 15 93 each add to cart.

Fri oct 9 wed oct 14. 6 x 6 wall opening size white ceiling diffuser a501ms series 50700 6 x 6 wall opening size white ceiling diffuser a501ms series sku. Choose the type and size that fits your ductwork. Diffusers are used as supply air outlets.

Combination supply return plenum slot diffuser 3 4 slot fixed blade slot with down blow section 2 return slot tbdi 80 adjustable gasket tipped blade plenum slot diffuser. Sidewall straight blade vs. A diffuser airflow rate is 50 cfm per linear foot 77 4 l s per linear meter of. Perforated diffusers feature a clean unbroken plane look and reduce noise in low volume air applications.

Perpendicular air flows nominal airflow.