N O V E L T Y Diffuser with particulate filter class H13

Transcription

1 N O V E L T Y Diffuser with particulate filter class H13 NAF Atest Higieniczny: HK/B/1121/02/2007 NAF diffusers are intended to use in low- and mediumpressure ventilation systems. They are used in facilities with increased air quality requirements e.g. hospitals, laboratories (due to keeping the purity of tested samples and limiting the escape of harmful pollutants out), food industry and pharmaceutical premises, microelectronics assembly premises. By using particulate filter class H13 they provide a very high degree of supply air purity. Diffuser with particulate filter H13 SMAY LLC / 29 Ciep³ownicza St. / Cracow / Poland tel / fax / info@smay.eu

2 Execution plenum box NAF are equipped with plenum box with side, circular connector with or without a damper. The damper could be made in two versions: with adjusting lever inside the box, with adjustment next to the connector, outside the box. Standard plenum box is made of galvanized steel and coated on RAL 9010 color. It is possible. On request it may be made of stainless steel. In standard execution, there are spigots for connecting differential pressure switch, installed in the plenum box casing. In standard execution, a box is equipped with a spigot for filter integrity testing (tracer-gas leak testing method), optionally it is equipped with a spigot for filter gasket tightness testing. Construction of the box allows the use of test methods in accordance with ISO 14644: Cleanrooms and associated controlled environments- Part 3: Test methods. Execution filter The filter is mounted in the casing on a special aluminum frame and fixed to it by means of corners with grub screw (provided in bulk), screwed with use of 4 mm hex key. The filter is made in class H13 according to EN 1822: 2009, in a casing made of galvanized steel with flat gasket 8 mm thick, made of high quality neoprene. Verification of the degree of pollution of the filter is possible using differential pressure switch connected to the spigots mounted in the plenum box casing. It is recommended to use differential pressure switch for optimum operation of the diffuser. Execution diffuser Plenum boxes are equipped with diffusers for ceiling-mounting: SDA4, NS4, NS5, NS8, NS9 or with grilles for wall-mounting: series of types ST and AL. Standard diffusers are made of steel, powder coated on RAL 9010 color. On request it is possible to coat the diffuser to another RAL color. Installation There are 8 holes in the plenum box for installation using hangers. If the filter is square-shaped (dimensions A=B) then the diffuser is mounted to plenum box by means of central screw. For rectangular-shaped filter (dimensions A B) the diffuser is mounted to plenum box with use of screws through the holes in the diffuser frame. Guidelines for designing For proper operation of the diffuser please be advised that recommended airflow velocity through the filter class H13 and thickness mm should not be greater than 0.75 m/s and for the filter class H13 and thickness mm not greater than 1,5 m/s. Final airflow resistivity Pa. Maximum operation temperature 70 C. It is recommended to replace the air filter when the pressure drop measured at the filter in use exceeds twice the value of pressure drop declared for the new filter. 2

3 Dimensions, weight, selection of plenum boxes 1. Variant of the NAF box with side connection and the damper adjusted from the inside Pd. Fig. 1. Detail K 60 d 25 W + d W + 65 K A x B 65 W (A + 30) x (B + 30) 15 Tab 1. Filter dimensions Capacity Initial airflow resistivity Connector Weight with filter 3 A x B W [m /h] [Pa] +/- 10% d [mm] 305x x x x x x x x [kg] 11, , , ,5 21,5 23,

4 Dimensions, weight, selection of plenum boxes 2. Variant of the NAF box with top connection and the damper adjusted on the connector Pg. Fig. 2. Detail K d W W + 65 K W A x B 65 Tab 2. (A + 30) x (B + 30) 15 Filter dimensions Capacity Initial airflow resistivity Connector Weight with filter 3 A x B W [m /h] [Pa] +/- 10% d [mm] 305x x x x x x x x x x [kg] 11, , ,5 19, ,5 23, , Filter dimensions on request A x B 610x x x915 W 4

5 Dimensions, weight, selection of plenum boxes 3. Variant of the NAF box with side connection and the damper adjusted on the connector Pb. Fig. 3. Detail K B K H W + 65 W A x B d 65 (A + 30) x (B + 30) Tab 3. Filter dimensions Capacity Initial airflow resistivity Height Connector Weight with filter 3 A x B W [m /h] [Pa] +/- 10% H [mm] d [mm] 305x x x x x x x x x x [kg] 11, , ,5 19, ,5 23, Filter dimensions on request A x B 610x x x915 W 5

6 Nomographs Nomograph I Pressure drop? P depending on airflow intensity for filter W=. p [Pa] airflow Nomograph II Pressure drop? P depending on airflow intensity for filter W=. p [Pa] airflow 6

7 Nomographs Nomograph III Pressure drop? P depending on airflow intensity for filter W=. p [Pa] airflow 7

8 Diffusers Diffusers are intended to target and distribute the air which is exhausted from the ventilation system. NS4 NS5 NS8 NS9 ALDA4 SDA4 8

9 Square diffusers types, filter sizes Filter size NS4 NS5 NS8 NS9 SDA4 ALDA4 610x x x x x x305 Rectangular diffusers types, filter sizes Filter size 305x x x x915 SDA4 ALDA4 9

10 Square diffusers Filter size 305x x x x x x610 Diffuser type Dimension C, D [mm] Diffuser size Dimension A [mm] Dimension Dn [mm] Dimension Dz [mm] Number of slots Effective area Aeff [m2] NS NS ,0167 NS8-300/ ,0097 NS ,0089 SDA ,0545 ALDA ,0545 NS ,0138 NS ,0301 NS8 - / ,0194 NS ,0216 SDA ,9110 ALDA ,9110 NS ,0138 NS ,0468 NS8-600/ ,0 NS ,0353 SDA ,1139 ALDA ,1139 NS ,0367 NS NS8-600/ ,0 NS ,0353 SDA ,1575 ALDA ,1575 NS ,0367 NS NS8-600/ ,0583 NS ,0551 SDA ,1774 ALDA ,1774 NS ,0367 NS NS8-625/ ,0656 NS ,0551 SDA ,2035 ALDA ,2035 Rectangular filters Filter size Diffuser type Dimensions CxD [mm] Dimensions A [mm] Dimensions B [mm] Number of slots Effective area Aeff [m2] 305x610 SDA4/ALDA4 638x , x540 SDA4/ALDA4 568x , x762 SDA4/ALDA4 790x ,0 610x915 SDA4/ALDA4 943x ,

11 Selection of diffusers Symbols: 3 V t [m /h] Airflow intensity A, B [m] Distance between diffusers H 1 [m] Height from the ceiling to the occupied zone V h1 [m/s] Airflow velocity at the height H1 L [m.] Airflow range V L [m/s] Airflow velocity at the distance L t Z [Ê] Temperature difference between supply and exhaust air in the space t L [Ê] Temperature difference between the air in the space and supply air at the distance L where: L = A/2 +H 1 or L = B/2 +H 1 or L = X +H 1 p [Ðà] local pressure drop L w [db(a)] sound power level V eff [m/s] effective volume flow 2 A eff [m ] effective area of the diffuser 11

12 Selection of diffusers Presented graphs show the characteristics for default settings. In order to choose diffusers, please read the terms and conditions, settings and graphs placed in the individual diffusers' data sheets. Selection of SDA4 Airflow velocity distribution depending on air flow range Filters: 305x305, 405x405, 457x457, 535x535 Selection of NS4 Airflow velocity distribution depending on air flow range Filters: 405x405, 457x457 Filters: 535x535, 575x575, 610x610 12

13 Selection of diffusers Selection of NS5 Airflow velocity distribution depending on air flow range. Selection of NS8 Airflow velocity distribution depending on air flow range Filters: 305x305 Airflow velocity distribution depending on air flow range Filters: 405x405, 457x457, 535x535 Temperature ratio Temperature ratio Air flow range L[m] Air flow range L[m] 13

14 Selection of diffusers Selection of NS8 Filter: 575x575 Temperature ratio Air flow range L[m] Filter: 610x610 Air flow range L[m] Selection of NS9 Airflow velocity distribution depending on air flow range. Filter: 305x305 Temperature ratio Temperature ratio Air flow range L[m] 14

15 Selection of diffusers Selection of NS9 Filter: 405x405 Filters: 457x457, 535x535 Filters: 575x575, 610x610 Temperature ratio Temperature ratio Temperature ratio Air flow range L[m] Air flow range L[m] Air flow range L[m] 15

16 Accessories and product designation principles While ordering, please provide the information using the following method: NAF - <A> x <B> x <W> - <d><r> - <S> - <PM> <RAL> / <ADD> Where: <A> - Filter width in [mm] selected from the table above <B> - Filter height in [mm] selected from the table above <W> - Filter thickness in [mm] selected from the table above <d> - Connector diameter in [mm] <R> - Damper in the connection: * Pb - Damper in the side connection with adjustment on the connector Pd - Damper in the side connection with adjusting lever inside the plenum box Pg - Damper in the top connection with adjustment on the connector <S> - Spigots for integrity and air leakage testing brak = None= single spigot for filter integrity testing (tracer-gas leak testing method) UF = Additional second spigot for filter gasket tightness testing <PM> - Finish* SL = Coated steel SN = Stainless steel (304 according to AISI, 0H18N9 according to PN) <RAL> - RAL color (for SL finish, default RAL9010)* <ADD> - Additional accessories shall be specified here, according to the list below:** H13 - Particulate filter NS4 - Swirl diffuser with fixed blades NS5 - Swirl diffuser with fixed blades NS8 - Swirl diffuser with movable blades NS9 - Swirl diffuser with movable blades SDA4-4-way steel made, square/rectangular ALDA4-4-way square/rectangular diffuser, aluminum made * optional values - default values will be used if optional values are not specified ** for square-shaped filter (dimension A=B), the diffuser is mounted to plenum box with use of central screw (K1). for the rectangular filter (dimension A B) the diffuser is mounted to plenum box with use of screws, through the holes in the diffuser frame (K8) 1. It is possible to adopt NAF for wall-mounting with grilles ST and AL series. While ordering, grilles shall be carefully specified with use of product designation principles in a data sheet of particular grille. 2. It is possible to equip NAF in E11 or H14 class filter. Please specify a filter class while ordering. Order example NAF - 305x305x - 200Pb - SL9010/H13, SDA4 16