PUNKAH LOUVRES - PKL DESCRIPTION & FEATURES

Transcription

1 PUNKAH LOUVRES - DESCRIPTION & FEATURES Punkah Louvres are suitable for high velocity spot cooling applications. The unit is fully adjustable and can be used as either a jet or diffused air outlet. Fully adjustable for direction of throw, they are particularly useful where ventilation is required in remote areas as its air velocity reduces the length of branch ducting needed. In heating systems the high velocity air delivered from the Punkah Louvre affords adequate forced convection, avoiding stratification and makes possible the use of higher duct temperatures. S operate at high pressure. Where its operating pressure bears a high ratio to that of the duct system, it facilitates balancing without the use of dampers, deflectors or turning vanes. S are in cream compression moulded plastic with a metal back plate. ORDERING CODE Series Type A, B, D Fixing F0 - No fixings, F3 - Mounting Ring Finish C - Cream Example: /A/F3/C/Model Size TYPICAL APPLICATIONS Offshore rigs, accommodation modules & engine rooms. Factories areas with high equipment heat loads. Sports complexes swimming pools, indoor arenas. Clean room areas high velocity jet cleaning. Post offices sorting offices and exchange areas. Paper industry drying areas. Ships accommodation & engine room. Theatres, office complexes, banking halls, drying booths. bakeries, laundries, welding bays. /A /B /D /A are the simplest form providing wide range directional adjustment with fingertip control. Complete shut-off is obtained in one clearly marked position. Available in sizes 3 to 7. /B have the additional feature of an internal control damper. This arrangement permits complete universal direction adjustment of the outlet together with volume regulation in any position. Available in sizes 3 to 6. /D provide a choice between the characteristics of the high velocity jet outlet and jet position, a fully adjustable high velocity air stream is obtained. With the louvre in the diffused position draftless diffusion is provided. Shut-off is obtained at midway position. Available in sizes 3 to 6.

2 PUNKAH LOUVRES - Various Punkah louvre arrangements and shut off position on exposed ducts Typical sections showing ducts Punkah louvres in exposed positions eg factory space Typical sections showing Punkah louvre arrangements with ducts concealed Wall Mounted Ceiling Mounted

3 PUNKAH LOUVRES - DIMENSIONS A B C D E F G N P Weight without Size PC dia. of Dia. of Opening in Outside Dia. of Screw holes Dia. of ball Inside duct fixing ring screws flange duct duct nozzle No mm kg Punkah Louvres can be supplied with 9.5mm wire mesh guard soldered to back flange Dimension E is increased by 3mm. Size A B C J K N P Dia. Dia. Rivet holes Screw holes mm mm PC dia. mm Weight kg No mm No mm

4 Performance Data Temp. diff. ( C) m 3 /sec Size P.Drop (Pa) dba level Drop or rise in cms Residual velocity m/s Drop or rise in cms Residual velocity m/s Drop or rise in cms Residual velocity m/s Drop or rise in cms Residual velocity m/s Drop or rise in cms Residual velocity m/s Drop or rise in cms Residual velocity m/s Drop or rise in cms Residual velocity m/s

5 Performance Data (continued) Temp. diff. ( C) m 3 /sec Size P.Drop (Pa) dba level Drop or rise in cms Residual velocity m/s Drop or rise in cms Residual velocity m/s Drop or rise in cms Residual velocity m/s Drop or rise in cms Residual velocity m/s

6 Performance Data (continued) Temperature difference ( C) m 3 /hour m 3 /sec Size 8/130 8/ /130 8/ /130 8/ /130 8/ /130 8/ /130 8/ P.Drop (Pa) dba level Drop or rise in cms Residual velocity m/s Drop or rise in cms Residual velocity m/s Drop or rise in cms Residual velocity m/s Drop or rise in cms Residual velocity m/s Drop or rise in cms Residual velocity m/s Drop or rise in cms Residual velocity m/s

7 Performance Data (continued) Temperature difference ( C) m 3 /hour m 3 /sec Size 8/130 8/ /130 8/ /130 8/ /130 8/ /130 8/ /130 8/ P.Drop (Pa) dba level Drop or rise in cms Residual velocity m/s Drop or rise in cms Residual velocity m/s Drop or rise in cms Residual velocity m/s Drop or rise in cms Residual velocity m/s Drop or rise in cms Residual velocity m/s

8 PUNKAH LOUVRES - ANGULAR DISCHARGE CORRECTION CHART Rise or Drop (cms) Correction in degrees EXAMPLE Size 6 Punkah Louvre handling 0.038m 3 4.6m throw Supply air = 11 C below room air Drop of Jet Stream = 43cm Angular correction for drop of jet: 43cm drop 4.6m throw Therefore, tilt louvre up 6 Applications of performance data 1.Spot Cooling Required From Table Ventilation air 3.4m throw 0.28m 3 /sec at room temp 0.6m/s residual velocity Size 4 Punkah Louvre 200Pa max static pressure 0.6m/s residual velocity 160Pa max static pressure 2. Comfort Cooling Required From Table Angular correction for drop of jet Supply air 11 C 0.47m 3 /sec Size 6 Punkah Louvre 122cm drop below room air 7.6m throw 0.3m/s max residual velocity 7.6m throw 0.3m/s max residual velocity 100Pa max static pressure from table tilt louvre up 9 40db max noise level 36db max noise level 150cm max drop of jet from c/l 122cm max drop of jet from c/l