Your location：| position | Fresh air | Return air | Front of dehumidifier | Desuperheater bypass | Heater bypass |
| Current Speed m/s | 2.5～4 | 6～6 | 2～4 | 7.5～12 | 5～7.5 |
2、 Air volume index and indoor average flow of different air supply modes
| Air supply mode |
Of unit floor area Air supply volume l/s m |
Workspace Average Velocity m/s |
Ventilation rate 1/h |
|
Side air supply shutter Strip vent Local orifice plate air supply Ceiling diffuser Ceiling orifice plate air supply |
3～6 4～10 5～15 5～25 5～50 |
0.13～0.18 0.10～0.18 0.10～0.18 0.10～0.25 0.05～0.15 |
7 12 18 30 60 |
3、 RECOMMENDATIONS AND MAXIMUM VELOCITIES FOR LOW SPEED DUCT SYSTEMS
| Application site | residence | Public buildings | factory | |||
| recommend | maximum | recommend | maximum | recommend |
maximum |
|
|
Outdoor air inlet Air filter Heating manifold Cooling stack Drenching room Fan outlet Main air duct Branch air duct (horizontal) Branch air duct (vertical) |
2.5 1.3 2.3 2.3 2.5 6.0 4.0 3.0 2.5 |
4.0 1.5 2.5 2.3 2.5 8.5 6.0 5.0 4.0 |
2.5 1.5 2.5 2.5 2.5 9.0 6.0 4.0 3.5 |
4.5 1.8 3.0 2.5 2.5 11.0 8.0 6.5 6.0 |
2.5 1.8 3.0 3.0 2.5 10.0 9.0 5.0 4.0 |
8.0 1.8 3.5 3.0 2.5 14.0 11.0 9.0 8.0 |
4、 Maximum allowable velocity of air supply area of low-speed air duct system
| Application site | Noise control of main air duct | Conduct is controlled by friction resistance | |||
| Air supply main pipe | Return air main pipe | Air supply main pipe | Return air main pipe | ||
|
residence Apartment and hotel rooms Office and library Auditorium and theater Banks and high-end restaurants Department stores and cafeterias factory |
3.0 5.0 6.0 4.0 7.5 9.0 12.5 |
5.0 7.5 10.0 6.5 10.0 10.0 15.0 |
4.0 6.5 7.5 5.5 7.5 7.5 9.0 |
3.0 6.0 8.0 5.0 8.0 8.0 11.0 |
3.0 5.0 6.1 4.0 6.0 6.0 7.5 |
5、 Relationship between flow velocity in stay area and human sensation
| Velocity m/s | Human sensation |
|
0～0.08 0.127 0.127～0.25 0.33 0.38 0.38～1.52 |
Uncomfortable, feeling of stagnant air Ideal and comfortable Basic comfort Uncomfortable, can blow tissue Upper limit of comfort for standing people For plant and local air conditioning |
6、 Maximum allowable flow velocity in the stay area
| Human condition | Sitting for a long time | Sit for a short time | Light work | Rework |
| application | office | restaurant | Store light industry | Factory and dance hall |
|
冷却 m/s 加热 m/s |
0.10 0.20 |
0.15 0.30 |
0.20 0.35 |
0.30 0.45 |
7、 Recommended flow rate of return air grille
| position | Near seat | Above the stay area | Lower part of door | Upper part of door | Industrial |
| Velocity m/s | 2～3 | 3～4 | 4 | 3 | >=4 |
8、 Maximum allowable air supply temperature difference in air-conditioned rooms
| Air supply mode | Height of the following rooms m | ||||
| 2 | 3 | 4 | 5 | 6 | |
|
Side air supply, large air volume Side air supply, small air volume Ceiling diffuser |
6.5 9.0 9.5 |
8.3 11 16 |
10 13 17 |
12 15 18 |
14 17 18 |
9、 Flow rate of ventilation system
| system | businessIndustry | ||
| low speed |
Air supply, maximum flow rate Air supply, general flow rate Return air, maximum velocity Return air, general velocity |
13 6～11 10 7.5～9 |
13 11～13 13 9～13 |
| High speed, general | 13 | 13～25 | |
10、 Recommended air supply outlet flow rate
| Application site | Velocity m/s |
|
Broadcasting Room theater Residence, apartment, hotel room, classroom Private office General office cinema Department store, upper floor Department store, underground |
1.5～2.5 2.5～3.5 2.5～3.8 2.5～4.0 5.0～6.0 5.0 7.5 10.0 |
11、 Allowable supply air flow rate controlled by noise standard
Application site
| Velocity m/s | |
|
Library, broadcasting room Residence, apartment, private office, hospital room Banks, theaters, classrooms, general offices, shops, restaurants Factory, department store, kitchen |
1.75～2.5 2.5～4.0 4.0～5.0 5.0～7.5 |
1、 Air supply volume of side air supply outlet
| Size of air supply outlet mm | Velocity of air supply outlet m/s | ||||
| 1.5 | 2.0 | 2.5 | 3.75 | 5.0 | |
| 250*100 | 30 | 40 | 50 | 70 | 95 |
| 300*100 | 35 | 45 | 55 | 85 | 115 |
| 400*100 | 45 | 60 | 75 | 115 | 150 |
| 500*100 | 55 | 75 | 95 | 145 | 190 |
| 600*100 | 70 | 90 | 115 | 170 | 230 |
| 750*100 | 85 | 115 | 145 | 215 | 285 |
| 900*100 | 100 | 135 | 170 | 255 | 340 |
| 250*150 | 45 | 55 | 70 | 105 | 145 |
| 300*150 | 50 | 70 | 85 | 130 | 170 |
| 400*150 | 70 | 90 | 115 | 170 | 230 |
| 500*150 | 85 | 115 | 145 | 215 | 285 |
| 600*150 | 100 | 135 | 170 | 255 | 340 |
| 750*150 | 130 | 170 | 215 | 320 | 430 |
| 900*150 | 155 | 205 | 255 | 385 | 515 |
| 400*200 | 90 | 120 | 150 | 230 | 305 |
| 500*200 | 115 | 150 | 190 | 285 | 380 |
| 600*200 | 135 | 180 | 230 | 340 | 455 |
| 750*200 | 170 | 230 | 285 | 430 | 570 |
| 900*200 | 205 | 275 | 340 | 415 | 685 |
| 400*250 | 115 | 150 | 190 | 285 | 380 |
| 500*250 | 145 | 190 | 240 | 355 | 475 |
| 600*250 | 170 | 230 | 285 | 430 | 570 |
| 750*250 | 215 | 285 | 355 | 535 | 715 |
| 900*250 | 255 | 340 | 430 | 640 | 855 |
| 530*300 | 170 | 230 | 285 | 430 | 570 |
| 600*300 | 205 | 275 | 640 | 575 | 685 |
| 750*300 | 255 | 340 | 430 | 640 | 855 |
| 900*300 | 310 | 410 | 515 | 770 | 1030 |
| 1000*50 | 55 | 75 | 95 | 145 | 190 |
| 1000*75 | 85 | 115 | 145 | 215 | 285 |
| 1000*100 | 115 | 150 | 190 | 285 | 380 |
| 1000*125 | 145 | 190 | 240 | 355 | 475 |
| 1000*150 | 170 | 230 | 285 | 430 | 570 |
| 1000*175 | 200 | 265 | 330 | 500 | 665 |
| 1000*200 | 230 | 305 | 380 | 570 | 760 |
| Dimension mm | Air supply flow m/s | |||||
| 1.0 | 1.5 | 2.0 | 2.5 | 3.75 | 5.0 | |
| 250*250 | 50 | 70 | 95 | 120 | 175 | 235 |
| 300*300 | 70 | 100 | 135 | 170 | 255 | 340 |
| 350*350 | 90 | 140 | 185 | 230 | 350 | 465 |
| 400*400 | 120 | 180 | 240 | 295 | 440 | 590 |
| 500*500 | 190 | 280 | 380 | 470 | 710 | 945 |
| 600*600 | 270 | 410 | 545 | 680 | 1020 | 1360 |
| model | 003#（50W） | 004#（72W） | 006#（115W） | 008#（140W） |
010# (190W) |
012# (225W) |
014# (290W) |
| Dimension mm | 600*200 | 750*200 | 830*200 | 950*200 | 1200*200 | 1300*200 | 1800*200 |