Mitsubishi Heavy Industries FDT200VSAWPVH Service Manual page 145

CHARACTERISTICS OF AIR FLOW IN DIVIDED DUCT FOR FDTC CHARACTERISTICS OF AIR FLOW IN DIVIDED DUCT FOR FDTC CHARACTERISTICS OF AIR FLOW IN DIVIDED DUCT FOR FDTC
Models FDTC50VH, 60VH Models FDTC50VH, 60VH Models FDTC50VH, 60VH
4 4 4
3.5 3.5 3.5
3 3 3
2.5 2.5 2.5
2 2 2
1.5 1.5 1.5
Air flow in divided Air flow in divided Air flow in divided
duct (Hi) duct (Hi) duct (Hi)
1 1 1
0.5 0.5 0.5
0 0 0
0 0 0 10 20 30 40 50 60 70 80 90 100 10 20 30 40 50 60 70 80 90 100 10 20 30 40 50 60 70 80 90 100
External static pressure in divided duct (Pa) External static pressure in divided duct (Pa) External static pressure in divided duct (Pa)
■Divided duct connection method ■Divided duct connection method ■Divided duct connection method
1. Open some one during 4 knock out holes, and please connect a divided duct. 1. Open some one during 4 knock out holes, and please connect a divided duct. 1. Open some one during 4 knock out holes, and please connect a divided duct.
It isn't possible to use more than one hole at the same time. It isn't possible to use more than one hole at the same time. It isn't possible to use more than one hole at the same time.
2. Please make the wind shielding a blowout vent or the side where a divided duct was connected. 2. Please make the wind shielding a blowout vent or the side where a divided duct was connected. 2. Please make the wind shielding a blowout vent or the side where a divided duct was connected.
3. The shotage of the external static pressure by pressure loss for a connected divided duct and blowout 3. The shotage of the external static pressure by pressure loss for a connected divided duct and blowout 3. The shotage of the external static pressure by pressure loss for a connected divided duct and blowout
unit is made up by a booster fan. unit is made up by a booster fan. unit is made up by a booster fan.
example : When 2.5m example : When 2.5m example : When 2.5m
connection ductφ125ｘ5ｍ） connection ductφ125ｘ5ｍ） connection ductφ125ｘ5ｍ）
①Duct resistance : Pressure loss by a flexible duct =35Pa (7Pa/m x 5m) ①Duct resistance : Pressure loss by a flexible duct =35Pa (7Pa/m x 5m) ①Duct resistance : Pressure loss by a flexible duct =35Pa (7Pa/m x 5m)
②Blowout unit : Pressure loss by a blowout unit =10Pa ②Blowout unit : Pressure loss by a blowout unit =10Pa ②Blowout unit : Pressure loss by a blowout unit =10Pa
③External static pressure when being 2.5m ③External static pressure when being 2.5m ③External static pressure when being 2.5m
⇒Correspondence by a booster fan =①+②-③ =28Pa ⇒Correspondence by a booster fan =①+②-③ =28Pa ⇒Correspondence by a booster fan =①+②-③ =28Pa
Air flow in divided Air flow in divided Air flow in divided
duct (P-Hi) duct (P-Hi) duct (P-Hi)
/min of ventilation by divided duct is needed in model FDTC60VH (In case of /min of ventilation by divided duct is needed in model FDTC60VH (In case of /min of ventilation by divided duct is needed in model FDTC60VH (In case of
3 3 3
110 110 110
100 100 100
90 90 90
Main air flow (Hi) Main air flow (Hi) Main air flow (Hi)
80 80 80
70 70 70
60 60 60
50 50 50
40 40 40
30 30 30
20 20 20
10 10 10
Air flow in divided Air flow in divided Air flow in divided
duct (Hi) duct (Hi) duct (Hi)
0 0 0
0 0 0 10 20 30 40 50 60 70 80 90 100 10 20 30 40 50 60 70 80 90 100 10 20 30 40 50 60 70 80 90 100
External static pressure in divided duct (Pa) External static pressure in divided duct (Pa) External static pressure in divided duct (Pa)
/min =17Pa (See upper table.) /min =17Pa (See upper table.) /min =17Pa (See upper table.)
3 3 3
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'21 • PAC-SM-383
All air flow (Hi) All air flow (Hi) All air flow (Hi)
All air flow (P-Hi) All air flow (P-Hi) All air flow (P-Hi)
Main air flow (P-Hi) Main air flow (P-Hi) Main air flow (P-Hi)
Air flow in divided Air flow in divided Air flow in divided
duct (P-Hi) duct (P-Hi) duct (P-Hi)