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.
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
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 3 95 76 118 86 38 41 38 3 5 0.3 4 121 102 145 111 52 49 51 3 5 0.5 5 151 127 175 139 70 59 64 3 5 0.8 6 176 152 203 162 86 70 76 3 5 1.1 7 203 178 229 191 111 79 89 4 5 1.6 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 3 95 106 86 4 3 3 5 0.0 4 121 133 111 5 3 3 5 0.1 5 151 162 139 6 3 3 5 0.1 6 176 191 162 8 3 3 5 0.2 7 203 218 191 8 3 4 5 0.2
Performance Data 0.9 1.5 2.1 2.8 3.4 4.6 6.1 Temp. diff. ( C) m 3 /sec 0.0 0.0 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.1 0.1 0.1 Size 3 3 4 3 4 3 4 5 4 5 6 4 5 6 4 5 6 7 5 6 7 5 6 7 5 6 7 6 7 6 7 7 7 7 P.Drop (Pa) 30 60 20 110 40 220 80 30 110 50 30 160 70 40 220 90 50 20 110 70 30 140 80 40 180 100 50 150 70 220 100 130 160 220 dba level 20 25 18 32 25 37 30 24 34 28 24 37 32 27 39 34 30 25 36 33 27 38 34 29 40 36 31 40 34 43 38 40 42 45 5 Drop 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 or 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 16 rise 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22 in cms 3 0 3 0 0 0 0 3 0 0 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Residual velocity m/s 0.5 0.7 0.3 1.2 0.7 1.8 1.2 0.8 1.5 1.1 0.9 1.9 1.3 1.1 2.6 1.8 1.3 0.9 1.9 1.5 1.1 2.3 1.5 1.3 2.8 2.4 1.5 3.1 2.2 3.6 2.7 3.3 3.9 4 5 Drop 3 0 3 0 0 0 0 3 0 0 3 0 0 0 0 0 0 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 or 6 3 6 0 3 0 0 3 0 3 3 0 3 3 0 0 3 3 0 0 3 0 0 3 0 0 3 0 0 0 0 0 0 0 16 rise 9 6 9 3 6 0 3 6 0 3 6 0 3 3 0 3 3 6 0 3 3 0 3 3 0 0 3 0 0 0 0 0 0 0 22 in cms 12 6 15 3 6 0 3 6 0 3 6 0 3 6 0 3 3 6 3 3 6 0 3 3 0 3 3 0 3 0 0 0 0 0 Residual velocity m/s 0.3 0.4 0.2 0.7 0.5 1.2 0.7 0.5 1 0.7 0.5 1.2 0.9 0.7 1.7 1 0.8 0.5 1.2 1 0.7 1.5 1.2 0.8 1.8 1.3 0.9 1.9 1.3 2.3 1.6 2 2.3 2.6 5 Drop 9 6 9 3 6 0 3 6 0 3 6 0 3 3 0 3 3 6 0 0 3 0 0 3 0 0 3 0 0 0 0 0 0 0 11 or 18 9 15 6 9 0 6 9 3 6 9 0 6 6 0 3 6 9 3 3 9 3 3 6 0 3 6 0 3 0 3 0 0 0 16 rise 27 12 24 6 15 3 6 15 6 9 15 3 6 9 0 6 9 15 3 6 12 3 6 9 0 3 6 3 3 0 3 3 0 0 22 in cms 37 18 31 9 18 3 9 21 6 12 18 3 9 12 0 6 9 18 6 9 15 3 6 12 3 6 9 3 6 0 3 3 3 0 Residual velocity m/s 0.2 0.3 0.2 0.6 0.3 0.9 0.5 0.4 0.7 0.5 0.4 0.9 0.6 0.5 1.3 0.8 0.6 0.4 0.9 0.7 0.5 1.1 0.9 0.6 1.3 1 0.7 1.3 0.9 1.8 1.2 1.5 1.8 2.2 5 Drop 18 9 18 6 9 0 6 12 3 6 12 3 6 6 0 3 6 12 3 3 9 3 3 6 0 3 6 0 3 0 3 0 0 0 11 or 40 21 34 9 21 3 9 21 6 12 21 6 12 15 0 9 12 21 6 9 18 3 6 12 3 6 12 3 6 3 6 3 3 0 16 rise 58 27 55 12 31 6 15 34 12 21 31 6 15 21 3 12 15 33 9 12 24 6 9 21 3 9 15 6 9 3 6 6 3 3 22 in cms 76 40 70 18 40 9 18 43 15 27 43 9 21 27 6 15 21 42 12 18 33 9 12 27 6 12 21 6 12 3 9 6 6 3 Residual velocity m/s 0.2 0.3 0.1 0.4 0.3 0.7 0.4 0.3 0.5 0.4 0.3 0.7 0.5 0.4 1 0.6 0.5 0.3 0.7 0.6 0.4 0.9 0.7 0.5 1 0.8 0.6 1.1 0.8 1.4 0.9 1.2 1.4 1.7 5 Drop 37 18 34 9 18 3 6 21 6 12 18 6 12 12 0 6 9 18 6 9 15 3 6 12 3 6 9 3 6 3 3 3 3 3 11 or 70 37 49 18 27 9 18 40 12 24 37 9 18 24 3 12 18 39 9 18 30 6 12 24 6 9 21 6 12 3 9 6 6 3 16 rise 107 52 98 27 55 12 27 61 21 37 61 12 27 40 6 18 34 60 15 24 45 12 18 39 9 15 27 9 18 6 12 9 6 6 22 in cms 140 73 131 34 73 18 37 79 27 52 76 18 37 52 9 27 40 75 21 34 60 15 24 48 12 21 39 12 24 6 18 12 9 6 Residual velocity m/s 0.1 0.2 0.1 0.4 0.2 0.6 0.4 0.2 0.5 0.3 0.2 0.6 0.4 0.3 0.9 0.5 0.4 0.2 0.6 0.5 0.3 0.8 0.6 0.4 0.8 0.7 0.5 0.9 0.6 1.2 0.8 1 1.2 1.5 5 Drop 92 46 82 21 49 9 24 52 18 31 49 12 24 34 6 15 27 51 15 21 39 9 15 30 9 12 21 9 15 6 12 9 6 6 11 or 183 92 168 46 98 21 49 92 34 61 98 21 49 64 12 34 49 105 27 43 78 21 31 60 15 24 51 15 33 9 21 15 12 9 16 rise 275 137 244 69 140 34 76 153 52 98 153 34 73 104 18 52 79 150 40 67 114 31 49 96 24 40 75 24 48 15 37 24 18 12 22 in cms - 183-88 189 43 101 201 67 128 195 43 92 137 24 67 107 204 52 88 150 37 64 132 31 52 99 31 66 21 49 31 24 18 Residual velocity m/s 0.1 0.2 0.1 0.3 0.2 0.4 0.3 0.2 0.4 0.2 0.2 0.4 0.3 0.2 0.6 0.4 0.3 0.2 0.5 0.4 0.2 0.5 0.4 0.3 0.6 0.5 0.3 0.7 0.5 0.9 0.6 0.7 0.9 1 5 Drop 210 107 201 55 113 24 55 122 40 73 134 27 58 82 15 40 61 123 31 49 90 24 37 72 18 31 57 21 39 12 27 18 15 12 11 or - 214-107 232 49 113 244 79 153 232 52 110 153 31 70 122 240 64 104 186 46 76 150 40 61 120 40 84 24 55 37 31 21 16 rise - 336-159 330 76 174 366 122 226 351 79 168 244 46 122 183 330 92 153 282 73 113 234 58 95 180 55 120 37 82 58 46 36 22 in cms - - - 214-104 229-159 305-107 220 305 61 153 244-122 207-92 153 300 76 122 240 73 156 49 116 76 61 46 Residual velocity m/s 0.1 0.1 0.1 0.2 0.1 0.3 0.2 0.1 0.3 0.2 0.1 0.3 0.2 0.2 0.5 0.3 0.2 0.2 0.4 0.3 0.2 0.4 0.3 0.2 0.5 0.4 0.3 0.5 0.4 0.7 0.5 0.6 0.7 0.8
Performance Data (continued) 7.6 9.2 10.7 12.2 Temp. diff. ( C) m 3 /sec 0.0 0.0 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.1 0.1 0.1 Size 3 3 4 3 4 3 4 5 4 5 6 4 5 6 4 5 6 7 5 6 7 5 6 7 5 6 7 6 7 6 7 7 7 7 P.Drop (Pa) 30 60 20 110 40 220 80 30 110 50 30 160 70 40 220 90 50 20 110 70 30 140 80 40 180 100 50 150 70 220 100 130 160 220 dba level 20 25 18 32 25 37 30 24 34 28 24 37 32 27 39 34 30 25 36 33 27 38 34 29 40 36 31 40 34 43 38 40 42 45 5 Drop 397 210 397 107 214 49 110 244 76 143 229 52 113 168 31 76 122 240 61 98 180 46 73 138 37 58 111 40 75 24 49 37 31 21 11 or - 427-238 427 98 229 458 153 287 458 101 214 488 61 153 229 450 122 201 375 92 146 300 76 122 240 76 162 49 107 76 61 43 16 rise - - - 305-153 351-229 427-159 336-88 238 336-183 305-137 220 335 113 183 345 113 240 76 165 110 91 64 22 in cms - - - 397-207 427-305 - - 214 427-122 305 - - 244 397-183 305-140 283 450 143 300 101 225 152 122 85.3 Residual velocity m/s 0.1 0.1 0.1 0.2 0.1 0.3 0.2 0.1 0.2 0.2 0.1 0.3 0.2 0.2 0.4 0.2 0.2 0.1 0.3 0.2 0.2 0.3 0.3 0.2 0.4 0.3 0.2 0.4 0.3 0.6 0.4 0.4 0.5 0.7 5 Drop - 366-183 366 82 198 397 134 250 397 92 195 305 52 134 214 375 107 168 330 76 125 240 64 104 192 67 126 43 91 67 52 37 11 or - - - 336-165 397-262 488-171 366-107 268 427-214 336-159 250 510 131 214 405 131 282 88 195 134 107 79 16 rise - - - 519-265 - - 397 - - 275 - - 153 397 - - 305 579-244 366-195 305-201 375 134 286 195 152 116 22 in cms - - - - - 336 - - 519 - - 366 - - 180 519 - - 397 - - 305 519-244 412-247 495 174 366 259 213 152 Residual velocity m/s 0.1 0.1 0.1 0.1 0.1 0.2 0.1 0.1 0.2 0.1 0.1 0.2 0.2 0.1 0.3 0.2 0.2 0.1 0.2 0.2 0.1 0.3 0.2 0.1 0.3 0.3 0.1 0.4 0.2 0.5 0.3 0.4 0.5 0.6 5 Drop - 549-281 610 134 305 641 207 397 641 143 305 458 82 214 336 600 168 275 495 122 232 390 101 159 300 107 204 70 146 104 82 61 11 or - - - 549-262 641-427 - - 275 580-168 412 - - 336 354-244 412-201 336-214 405 137 305 213 171 122 16 rise - - - - - 427 - - 610 - - 427 - - 244 610 - - 488 - - 381 610-305 503-305 600 214 427 335 256 183 22 in cms - - - - - 549 - - - - - 550 - - 336 - - - 641 - - 488 - - 397 - - 427-275 579 422 335 244 Residual velocity m/s 0.1 0.1 0.1 0.1 0.1 0.2 0.1 0.1 0.2 0.1 0.1 0.2 0.1 0.1 0.3 0.2 0.1 0.1 0.2 0.2 0.1 0.3 0.2 0.1 0.3 0.2 0.2 0.3 0.2 0.4 0.3 0.3 0.4 0.5 5 Drop - - - 397-198 458-305 580-214 427 671 122 305 488-244 397-183 305 570 153 244 465 153 300 137 213 152 122 91 11 or - - - - - 397 - - 641 - - 427 - - 256 610 - - 488 - - 366 610-305 503-305 600 214 427 305 259 183 16 rise - - - - - 610 - - - - - 641 - - 366 - - - - - - 564 - - 458 - - 488-336 640 472 381 274 22 in cms - - - - - - - - - - - - - - 503 - - - - - - 702 - - 610 - - 641-427 - 610 503 381 Residual velocity m/s 0.1 0.1 0.1 0.1 0.1 0.2 0.1 0.1 0.1 0.1 0.1 0.2 0.1 0.1 0.2 0.1 0.1 0.1 0.2 0.1 0.1 0.2 0.2 0.1 0.2 0.2 0.1 0.3 0.2 0.4 0.2 0.3 0.4 0.4
Performance Data (continued) 0.9 1.5 2.1 2.8 3.4 4.6 Temperature difference ( C) m 3 /hour 300 340 382 424 466 508 m 3 /sec 0.1 0.1 0.1 0.1 0.1 0.1 Size 8/130 8/165 12 8/130 8/165 12 8/130 8/165 12 8/130 8/165 12 8/130 8/165 12 8/130 8/165 12 P.Drop (Pa) 33 13 4 42 16 5 54 21 6 66 26 7 79 31 9 95 37 11 dba level 30 20 7 33 23 10 36 26 13 38 29 16 41 31 18 43 33 20 5 Drop 0.1 0.2 0.7 0.1 0.2 0.5 0.1 0.2 0.4 0.1 0.1 0.3 0.1 0.1 0.3 0.0 0.1 0.2 11 or 0.3 0.6 1.4 0.2 0.4 1.1 0.2 0.3 0.9 0.1 0.3 0.7 0.1 0.2 0.6 0.1 0.2 0.5 16 rise 0.4 0.8 2.1 0.3 0.6 1.6 0.2 0.6 1.3 0.2 0.4 1.0 0.2 0.3 0.9 0.1 0.3 0.7 22 in cms 0.6 1.1 2.8 0.4 0.9 2.2 0.3 0.7 1.7 0.3 0.6 1.4 0.2 0.5 1.2 0.2 0.4 0.1 Residual velocity m/s 4.1 3.2 2.4 5.3 4.2 3 6.7 5.3 3.9 8.4 6.6 4.8 10 7.9 5.8 12 9.5 6.9 5 Drop 0.6 1.2 3.0 0.5 0.9 2.3 0.4 0.7 1.8 0.3 0.6 1.5 0.2 0.5 1.2 0.2 0.4 1.0 11 or 1.3 2.6 6.6 0.1 2.0 5.1 0.8 1.6 4.0 0.6 1.3 3.3 0.5 1.1 2.7 0.4 0.9 2.3 16 rise 1.8 3.8 9.6 1.4 2.9 7.5 1.1 2.3 5.9 0.9 1.9 4.7 0.8 1.6 4.0 0.6 1.3 3.3 22 in cms 2.5 5.2 13 2.0 4.0 10.3 1.7 3.2 8.1 1.3 2.6 6.6 1.1 2.2 5.4 0.9 1.8 4.6 Residual velocity m/s 2.5 1.9 1.4 3.2 2.6 1.8 4 3.2 2.3 5 4 2.9 6 4.7 3.5 7.2 5.7 4.2 5 Drop 1.6 3.2 8.2 1.2 2.5 6.4 0.1 2.0 5.0 0.8 1.6 4.1 0.7 1.3 3.4 0.6 1.1 2.8 11 or 3.5 7.1 18.0 2.7 6.5 14.1 2.1 4.4 11.1 1.7 3.5 8.9 1.4 2.9 7.5 1.2 2.5 6.3 16 rise 5.1 10.3 26.2 3.9 8.1 20.5 3.1 6.3 16.1 2.5 5.1 13 2.1 4.3 10.9 1.8 3.7 9.1 22 in cms 6.1 14.2 36.1 5.4 11.1 28.1 4.3 6.7 22.1 3.4 7.0 17.8 2.9 5.9 14.9 2.4 4.9 12.5 Residual velocity m/s 1.8 1.4 1 2.3 1.8 1.3 2.9 2.3 1.7 3.6 2.8 2.1 4.3 3.4 2.5 5.2 4.1 3 5 Drop 3.8 7.6 19.4 2.9 6.0 16.2 2.3 4.7 11.9 1.9 3.8 9.6 1.6 3.2 8.0 1.3 2.7 6.7 11 or 8.2 16.9 42.7 6.4 13.1 33.3 5.1 10.3 26.2 4.1 8.3 21.2 3.4 7.0 17.7 2.9 5.8 14.8 16 rise 12 24.5 62.2 9.4 19.1 48.5 7.4 15.0 38.1 5.9 12.1 30.8 5.0 10.2 25.7 4.2 8.5 21.5 22 in cms 16.5 33.7 85.6 12.9 26.7 66.7 10.1 20.7 52.4 8.2 16.7 42.3 6.8 14.0 35.4 5.7 11.7 29.6 Residual velocity m/s 1.3 1 0.8 1.7 1.3 1 2.2 1.7 1.3 2.7 2.1 1.6 3.2 2.5 1.9 3.9 3 2.2 5 Drop 6.7 13.7 34.8 5.2 10.7 27.1 4.1 8.4 21.3 3.3 6.8 17.2 2.8 5.7 14.4 2.3 4.8 12.1 11 or 14.8 30.7 76.5 11.5 23.5 59.7 9.1 18.5 46.0 7.3 14.9 37.9 6.1 12.5 31.7 5.1 10.5 26.5 16 rise 21.5 43.9 111.3 16.7 34.2 86.8 13.2 16.9 68.3 10.6 21.7 55.1 8 18.2 46.1 7.4 15.2 38.6 22 in cms 29.5 60.4 163.1 23.0 47.1 119.3 18.1 37.0 93.9 14.6 29.9 75.7 12.2 24.1 63.4 10.2 20.9 53.0 Residual velocity m/s 1.1 0.9 0.6 1.4 1.1 0.8 1.8 1.4 1 2.2 1.7 1.3 2.7 2.1 1.5 3.2 2.5 1.8 5 Drop 16.6 34.0 82.2 13.0 26.5 67.1 10.2 20.8 52.8 8.2 16.8 42.6 6.9 14.1 35.7 5.8 11.8 29.9 11 or 36.6 74.7 189.6 28.5 58.3 147.8 22.4 45.8 116.2 18.1 37 93.8 15.1 30.9 78.5 12.7 5.9 65.7 16 rise 53.2 108.7 278.7 41.5 84.8 214.9 32.6 66.7 169 26.3 53.8 136.4 22.0 45.0 114.1 10.4 37.7 95.5 22 in cms 73.1 149.5 379.1 57 116.6 295.5 44.8 91.7 232.4 36.2 74.0 187.5 30.3 61.9 156.9 25.3 51.8 131.4 Residual velocity m/s 0.8 0.6 0.5 1 0.8 0.6 1.3 1 0.8 1.6 1.3 0.9 2 1.5 1.1 2.4 1.9 1.4
Performance Data (continued) 6.1 7.6 9.2 10.7 12.2 Temperature difference ( C) m 3 /hour 300 340 382 424 466 508 m 3 /sec 0.1 0.1 0.1 0.1 0.1 0.1 Size 8/130 8/165 12 8/130 8/165 12 8/130 8/165 12 8/130 8/165 12 8/130 8/165 12 8/130 8/165 12 P.Drop (Pa) 33 13 4 42 16 5 54 21 6 66 26 7 79 31 9 95 37 11 dba level 30 20 7 33 23 10 36 26 13 38 29 16 41 31 18 43 33 20 5 Drop 38.8 79.2 200.9 30.2 61.8 156.6 23.8 48.6 123.2 19.2 39.2 99.4 16.0 32.9 83.2 13.4 27.5 69.6 11 or 85.3 174.3 442 66.5 135.9 344.6 52.3 106.9 271 42.2 86.2 218.7 35.2 72.2 103 29.5 60.4 153.2 16 rise 124 253.5 642.9 96.7 197 501.2 78.0 155.4 394.2 61.4 125.4 318.1 51.3 105 266.1 43.0 87.9 222.8 22 in cms 170.5 348.6-132.9 271.8 689.2 104.5 213.7 642 81.4 172.5 437.3 70.6 144.3 365.9 59.1 120.8 306.3 Residual velocity m/s 0.6 0.5 0.3 0.8 0.6 0.4 1 0.8 0.6 1.2 1 0.7 1.5 1.2 0.9 1.8 1.4 1 5 Drop 74.1 153.7 388.6 50.4 119.5 302.9 46.0 93.9 238.2 97.1 75.8 192.2 31.0 63.4 160.8 26.0 53.1 134.6 11 or 164.9 337.1-128.5 262.8 666.4 101.1 206.7 524.1 81.5 168.8 422.9 68.3 139.6 353.9 57.1 116.8 296.2 16 rise 239.8 490.3-187 382.3-147 300.6-118.6 243.6 615.1 99.3 203 514.7 83.1 169.9 430.8 22 in cms 329.7 674.2-257.1 525.6-202.8 413.4-163.1 333.6-136.5 279.1-114.3 233.6 592.4 Residual velocity m/s 0.5 0.4 0.3 0.6 0.5 0.4 0.8 0.6 0.5 1 0.8 0.6 1.2 0.9 0.7 1.4 1.1 0.8 5 Drop 132.9 271.8 609.2 103.6 211.9 537.3 81.5 166.6 422.8 66.8 134.5 341 55.0 112.5 285.3 46.1 94.2 238.8 11 or 292.5 598-228 486.2-179.3 366.6-144.7 295.8-121.1 247.5 627.7 101.3 207.2 525.4 16 rise 425.4 - - 331.7 678.1-260.8 533.3-210.5 430.3-176.1 360.1-147.4 301.4-22 in cms 584.9 - - 456 - - 358.6 - - 289.4 591.7-242.1 495.1-202.7 414.4 - Residual velocity m/s 0.4 0.3 0.2 0.5 0.4 0.3 0.7 0.5 0.4 0.8 0.6 0.5 1 0.8 0.6 1.2 0.9 0.7 5 Drop 209.1 427.6-163.1 333.4-128.2 262.2-103.5 211.6 536.4 86.6 177 448.9 72.5 148.2 375.7 11 or 460.1 - - 358.7 - - 282 - - 227.6 465.4-190.5 389.4-159.4 326-16 rise 669.2 - - 521.8 - - 410.3 - - 331.1 677-277 566.5-231.9 474.1-22 in cms - - - 714.4 - - 564.2 - - 455.3 - - 380.9 - - 318.9 651.9 - Residual velocity m/s 0.3 0.3 0.2 0.4 0.3 0.3 0.6 0.4 0.3 0.7 0.6 0.4 0.8 0.7 0.5 1 0.8 0.6 5 Drop 310 633.8-241.7 494.2-190.1 388.6-153.4 313.6-128.3 262.4-107.4 219.6 556.9 11 or 602 - - 531.7 - - 418.1 - - 337.4 - - 282.3 577.3-296.3 483.2-16 rise - - - - - - 608.2 - - 490.8 - - 410.7 - - 343.7 - - 22 in cms - - - - - - - - - 674.8 - - 664.6 - - 472.6 - - Residual velocity m/s 0.3 0.2 0.2 0.4 0.3 0.2 0.5 0.4 0.3 0.6 0.6 0.4 0.7 0.6 0.4 0.9 0.7 0.5
PUNKAH LOUVRES - ANGULAR DISCHARGE CORRECTION CHART Rise or Drop (cms) 3 9 15 30 45 60 120 180 240 300 360 420 480 540 600 690 0.9 2 6 1.5 1 4 6 11 2.1 1 3 4 8 12 16 2.8 1 2 3 6 9 13 24 Correction in degrees 3.4 1 2 3 5 8 10 20 29 4.6 1 1 2 4 6 8 15 22 28 6.1 1 1 3 4 6 11 17 22 27 7.6 1 2 3 5 9 13 18 22 26 29 9.2 2 3 4 8 11 15 18 22 25 28 10.7 3 7 10 13 16 19 22 25 27 30 12.2 3 6 9 11 14 17 19 22 23 27 30 EXAMPLE Size 6 Punkah Louvre handling 0.038m 3 /s @ 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