1-1.0-01.02-E-03/07
DKP - Square diffuser with flat adjustable panel
components for air-conditioning systems
Diffusers
DKP
DKP Square diffuser with flat adjustable panel
Ve r s i o n s
- DKP (square diffuser with flat adjustable panel)
The DK series of square diffusers with flat adjustable panels and circular spigots has been designed for the
radial diffusion of air from the ceiling in rooms with a height of less than 3 m. The ability to adjust the height
of the perimeter gap allows the range of the air to be adjusted following any variations in the air pressure,
in this way avoiding annoying turbulence and unexpected downflows of cold air in the room. The adjustment
is made by the vertical movement of the lower square plate that is connected to the external housing by
means of pins and fixing clips.
Quick reference selection table
500x500-250
400x400-200
40
900
1000
30
700
300
90
100
80
70
200
60
50
40
30
90
100
80
70
20
Q [l/s]
60
50
Q [m3/h]
500
NR 20
250x250-100
600
300x300-125
25 50 Pa
800
p 5 10
200
350x350-160
400
BxB - ØN [mm]
600x600-315
Q [m3/h]
Q [l/s]
Legenda
Q [m3/h] or [l/s]
supply air flow rate
BxB - ØN [mm]
Δp [Pa]
NR
nominal dimensions of the diffuser
pressure loss
noise rating (ISO standard, in relation to 10-12 W) taking no account of the attenuation of the room
w w w. t e c n o v e n t i l . c o m
VER. 19/02/07
We reserve the right to make any modifications without prior notice.
1
DKP
Diffusers
Dimensions
Section dimensions
ØN-2
10
70
10
20
(B+24)x(H+24)
3D Dimensions
Model
250X250
300X300
350X350
400X400
500X500
600X600
ØN (mm)
100
125
160
200
250
315
BxB (mm)
250x250
300x300
350x350
400x400
500x500
600x600
Construction
The DKP series of diffusers is made of aluminium (external housing) and steel (adjustable
central plate and upper circular collar), painted RAL 9010 white, and available in other
colours on request.
2
VER. 19/02/07
We reserve the right to make any modifications without prior notice.
w w w. t e c n o v e n t i l . c o m
DKP
Diffusers
Accessories
PS7-PSI7 plenum boxes
PS7–Standard plenum box made of sendzimir zinc plated steel with side connection.
PSI7-Plenum box insulated with class 1 certified material (Ministerial Decree 26-6-1984 Article 8) made of Sendzimir zinc plated steel with side connection.
PS8-PSI8 plenum boxes
PS8–Standard plenum box made of Sendzimir zinc plated steel with top connection.
PSI8-Plenum box insulated with class 1 certified material (Ministerial Decree 26-6-1984 Article 8) made of Sendzimir zinc plated steel with top connection.
Plenum box dimensions
Plenum
PS7
PS8
Ø (mm)
BXH (mm)
S (mm)
ØC (mm)
ØN (mm)
Weight (kg)
BXH (mm)
S (mm)
ØC (mm)
ØN (mm)
Weight (kg)
100
225x225
150
98
102
1,5
225x225
200
98
102
2,5
125
250x250
150
98
127
2
250x250
200
98
127
2,5
160
285x285
175
123
162
2,5
285x285
200
123
162
2,5
200
325x325
210
158
202
3
325x325
200
158
202
3
250
375x375
250
198
252
4,5
375x375
200
198
252
3,5
315
440x440
300
248
317
6
440x440
200
248
317
4,5
w w w. t e c n o v e n t i l . c o m
VER. 19/02/07
We reserve the right to make any modifications without prior notice.
3
DKP
Diffusers
SF – butterfly calibration damper
Butterfly calibration damper made of Sendzimir zinc plated steel
Technical data
Adjustment of the central plate
The effective outlet area values S shown on the following page relate to a perimeter gap height d= 10
mm. For other values of d, the value S must be multiplied by an appropriate coefficient, shown in the
following table (K= d / 10):
d (mm)
K
5
0,5
10
1
15
1,5
20
2
d
Warning: the effective outlet area of DKPs vary markedly with the height of the plate d. For a given air
pressure a diffuser with a larger aperture d may return lower pressure loss and noise level values than
one with a nominally greater diameter, as in the following example:
DKP400x400 (Ø200) - 300 m3/h - d= 15 mm - Dp= 22 Pa
DKP600x600 (Ø315) - 300 m3/h - d= 5 mm - Dp= 90 Pa
4
VER. 19/02/07
We reserve the right to make any modifications without prior notice.
w w w. t e c n o v e n t i l . c o m
Diffusers
DKP
E f f e c t i v e o u t l e t a r e a S ( m 2) a n d w e i g h t s ( k g )
The effective outlet area is a notional area that, once the velocity of the air is known, makes it possible to arrive at the rate of
flow that is actually passing through the diffuser. The measurement is carried out with an instrument that measures the velocity of the air at various points across the diffuser. The formula
that links the various parameters is as follows:
where
Q = vK x S x 3600
Q = supply air flow rate
[m3/h]
vk = average measured velocity [m/s]
S = effective outlet area [m2]
BxB (mm)
250X250
300X300
350x350
400x400
500x500
600x600
ØN (mm)
100
125
160
200
250
315
S (m )
0.0069
0.0081
0.0094
0.0106
0.0131
0.0156
Weight (kg)
0,5
0,7
0,9
1,1
1,6
2,2
2
For the variations of effective outlet area S with changes in height d see Page 4
>>
25
0x
>>
25
0
30
0x
>>
30
35
0
>> 0 x
40 350
0x
>>
40
50
0
0x
>>
5
00
60
0x
60
0
Pr e s s u r e l o s s a n d n o i s e l e v e l s
0,0
0,0
32
25
0
0,0 9
11
0,0
13
0,0
16
0,0
20
0,0
0,0
07
08
5
0,0
05
0,0
150
0,0
0,0
03
S [m2]
04
5
5
B x B [mm]
ρ = 1,2 kg/m3
100
90
80
10
70
9
45
60
8
50
40
7
6
30
35
vK [m/s]
∆p [Pa]
40
5
20
30 NR
4
25
10
9
8
3
7
900
800
700
600
2000
500
400
Legenda
200
500
400
100
300
90
80
70
60
200
50
40
90
100
30
80
60
70
20
Q [l/s]
50
5
Q [m3/h]
300
6
1000
20
Q [m3/h]
Q [l/s]
Q [m3/h]
supply air flow rate
BxB [mm]
diffuser nominal dimensions
S [m2]
effective outlet area
vk [m/s]
velocity relating to the effective outlet area S
Δp [Pa]
total pressure loss
NR
NR noise rating (ISO standard, in relation to 10-12 W) taking no account of the attenuation of the room
w w w. t e c n o v e n t i l . c o m
VER. 19/02/07
We reserve the right to make any modifications without prior notice.
5
DKP
Diffusers
03
0,0 5
0
0,0 45
0
0,0 55
0,007 >
0,008 > 2
> 5
0,009 > 30 0 x
0 25
1 >
0,0 1 >> 35 x 3 0
13 > 4 0 x 00
0,0 > 00 35
16 > 5 x 0
4
0,0 >> 00 00
60 x 5
20
0 x 00
0,0
6
25
00
0,0
32
Horizontal throws
S [m2]
8
0,0
B x B [mm]
7
6
5
4
3
2
1
5
L0,2 [m]
D [m]
4
3
2
1
0,9
0,8
0,7
0,6
-10 °C
3
2,5
2
1,5
1
0,5
1500
700
800
900
1000
600
200
500
400
300
70
80
90
100
60
50
40
200
70
80
90
100
0
60
0,5
50
1
40
1,5
0
30
2
0,5
20
2,5
1
9
10
1,5
30
2
0 °C
ρ = 1,2 kg/m3
0,5
400
+10 °C
300
∆T
Q [m3/h]
Q [l/s]
0
y [m]
Legend
Q [m3/h] o [l/s]
supply air flow rate
BxB [mm]
diffuser nominal dimensions
S [m2]
effective outlet area
vm [m/s]
average velocity of the throw at distance L
L [m]
diffusion radius (= x + y)
x [m]
horizontal dimension of the throw
y [m]
vertical dimension of the throw
L0,2 [m]
throw with terminal velocity of 0.2 m/s
D [m]
distance between two diffusers
ΔT [°C]
difference between supply air temperature and ambient temperature
L
D
L
x
vm
y
y
vm
vm
H
1,80
OCCUPIED ZONE
ZONA
OCCUPATA
The average throw velocity L0.2 at a distance x other than that indicated in the diagrams is obtained by using
the following formula:vx = 0.2 x (L0.2 / x)
The values shown in the diagram relate to a throw with ceiling influence. For free jet throws, the values relative to the throws are multiplied by a coefficient of 0.7.
6
VER. 19/02/07
We reserve the right to make any modifications without prior notice.
w w w. t e c n o v e n t i l . c o m
Diffusers
DKP
Fixing systems
Mounting with self-tapping screws on the diffuser collar
suspension to be
sospensione
a
carried
out by the
cura del cliente
client
suspension to be
sospensione a
carried out by the
cura
client del cliente
self-tappingviti
autoforanti
screws
The removal of the lower plate enables the regulating damper to be adjusted from below and for hidden fixing to be carried out.
w w w. t e c n o v e n t i l . c o m
VER. 19/02/07
We reserve the right to make any modifications without prior notice.
7
DKP
8
Diffusers
VER. 19/02/07
We reserve the right to make any modifications without prior notice.
w w w. t e c n o v e n t i l . c o m
components for air-conditioning systems
tecno-ventil s.p.a.
Via Parma, 2
2 6 0 1 6 S p i n o d ’A d d a ( C R )
Te l . + 3 9 0 3 7 3 . 9 8 0 4 5 6
Fa x + 3 9 0 3 7 3 . 9 8 0 6 8 1
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info@tecnoventil.com