Supply Air Diffuser Sizing

Suitable for return air applications.

Supply air diffuser sizing.

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. This air provides the motive force for room air motion. Use a round diffuser with overlapping stepdown rings with a butterfly damper. Diffusers may or may not have adjustable dampers or louvers.

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. Acd1 d iso 9001 certified company. 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. The diffuser shown above is a typical tiered acoustical ceiling 2 x2 lay in supply diffuser.

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. Fri oct 9 wed oct 14. Sidewall straight blade vs. 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.

The size of the aircon diffuser is the diameter of the neck to which the flexible. Air conditioner diffuser sizing. The ceiling diffuser may be used as a supply air diffuser or as a return air diffuser according to the application designed. Most underfloor air distri bution systems comply with this proviso.

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. 6 x 6 wall opening size white ceiling diffuser a501ms series 50700 6 x 6 wall opening size white ceiling diffuser a501ms series sku. Hart cooley 15 93 each add to cart. Air discharged by the supply outlet.

Diffusers supply air square ceiling diffuser model. Choose the type and size that fits your ductwork. Perpendicular air flows nominal airflow. It can be used to direct air in multiple directions.

Diffusers are used as supply air outlets. A diffuser airflow rate is 50 cfm per linear foot 77 4 l s per linear meter of. 0 8 mys 150 fpm supply air jet reaches to within 1 4 m 4 5 ft of floor level. Supply air diffusers return air diffuser never do this.

This is commonly considered to be the air within an envelope of 50 fpm 0 25 m s or greater velocity. Iso 9001 certified company. Perforated diffusers feature a clean unbroken plane look and reduce noise in low volume air applications. 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.

A square diffuser provides high volume air diffusion.