dpf-backward curve-red-plenum fans-a4 only

(Backward Curved Wheels)

DPF Series

Plenum Fans

(Free Running Wheel without Scroll)

Blowtech's Fan Test Lab as per AMCA210

in accordance with

AMCA Standard 210.

thirty

Impellers, Housings & Propellers

4

40

International

Plenum Fans (with Backward Curved Wheels)

DPF Series

(Free Running Wheel without Scroll)

Blowtech Air Devices Pvt. Ltd. certifies that the DPF Series Fan Models 500 to 1000 shown herein are licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 211 and AMCA Publication 311 and comply with the requirements of the AMCA Certified Ratings Program.

DPF Series Plenum Fans

4

Free Running Backward Curved Wheels without Scroll Housing

Blowtech Plenum Fans are designed for air handling applications where the fan wheel can operate without a scroll housing inside a plenum. The wheel and inlet cones are especially designed for this application so as to yield high efficiencies even in absence of a scroll. The advantages are:

Since the fan can work without a bulky scroll, a significant amount of space saving can be achieved and fan assembly can be made very compact.

2. Direct Driven with Variable Speed Drives

1. Compact design (No housing)

3. Universal Orientation and Fan System Connection

The most common drive configuration for Plenum Fans is directly mounted fan wheel and inlet cone assembly on a motor and speed variation achieved through electronic variable speed drives. This leads to significant space savings vis-a-vis belt drives and avoids recurring maintenance problems with belt drives such as belt alignments, loose belts, belt breakage etc.

The free running fan wheel is mounted inside a plenum and pressurizes the entire plenum uniformly. This allows the fan to be connected to the system from any side of the plenum, thus offering considerable flexibility in many difficult installation situations.

DPF Series plenum fans are available in 13 sizes from wheel diameter of 250 mm to 1000 mm. The sizes are as per AMCA Standards Handbook 99, Section 5, R20. The Air Volume capacity of DPF fans ranges from 200 m3/h to 65000 m3/h and maximum pressure capability of about 2000 Pa.

The DPF series is available in two designs - R and K, R being the standard offer. K variant offers stronger wheel construction and higher speed ratings for higher pressure applications.

The Wheel of DPF series is made of mild steel with welded backward curved blades and coated with polyester powder paint. A die cast aluminium hub with a precisely machined bore and a keyway is fitted to the wheel backplate. Use of precision tooling for the punching and assembling of wheel components results in extremely low levels of eccentricity and run out. The wheel is statically and dynamically balanced on computerised balancing machines to balance quality grade G 4.0 of ISO 1940 and AMCA 204 standard.

Inlet ConeThe inlet cone is made in one piece in mild steel using precision forming to achieve an optimum match with the wheel shroud. The specially designed inlet cone of Blowtech DPF series plenum fan provides for a smooth entry of air into the wheel inlet without eddies and swirls. This ensures optimum efficiency. For sizes 800, 900 & 1000, the inlet cone is made from moulded fibreglass.

Supporting Structure

In the standard execution, these components are coated with polyester powder paint. Special coatings may be applied on request.

Structural components (Base Frame, Motor Mounting, Front Panel) of DPF fans are made of rolled steel sections and galvanised/cold rolled sheets.

5

Interpretation of Fan Sound Power Levels

The sound power levels Lwo(A) shown on the performance charts are at fan outlet for installation type A free inlet free outlet in accordance with AMCA standard 301. The single total A-weighted value has been calculated by summing the measurements over the 8 octave bands using the following A-weighting correction factors:

-26.2 -16.1 -8.6 -3.2 0 +1.2 +1 -1.1

Since what humans hear are sound pressure levels (and not power levels), an approximate idea of the Sound Pressure Level Lpo(A) can be obtained from the power levels Lwo(A) shown on the curves using the following formulae:

a) In spherical free field : Lpo(A) = Lwo(A) - 20·log10(d) -11

b) In room conditions : Lpo(A) = Lwo(A) - 20·log10(d) -7

where d = distance between the fan and the microphone in meters.

Also the above equations to estimate sound pressure levels must be used with extreme caution. The sound pressure level depends not only on the distance 'd' but also on the acoustic properties of the enclosure in which the fan is installed. The above equations are only valid for theoretical acoustic environments. In real life situations, the actual pressure levels may be significantly different.

It should be noted that the sound power level of a fan, as installed in practice, could be significantly higher than that measured in laboratory conditions, due to a host of factors such as vibrations in the drive motor, stiffness of fan installation, air leakage through the connections, or turbulence produced by guards, diffusers, grills or transition pieces.

Guidelines for Placing the DPF Fan inside a Plenum

While installing Blowtech's DPF series fan inside a plenum, the recommended minimum clearances as shown in the figure below must be followed to ensure fan performance is not compromised due to system effects.

D = Impeller Diameter

Free Running Plug/Plenum Fan

DPF 250K

R

Shaft Power H in kW

Sound Power Level Lwo(A)

3Volume Q(m /h)

Outlet Vel V(m/s)

Vel Pressure Pv(Pa)

3Volume Q(m /s)

2000

1800

1600

1400

1200

1000

800

2001600

1900

2300

2500

2800

3000

3200

3400

3600

3800

4000

RPM - 4500

4200

0.10.10.1

43%43%43%

53%53%53%

63%63%63%

68% 68% (Total Efficiency h)68% (Total Efficiency h)

63%63%63%57%57%57%

757575

808080

858585

909090

95 95 dB(A)95 dB(A)

656565707070

0.20.20.2

0.370.370.37

0.550.550.55

0.750.750.75

1.11.11.1

1.51.51.5

2.02.02.0

600

400

00.0 1.0

0 40002000 500030001000

0 5 10 15 20 25

0 1 5 10 50 100 150 200 300 400

6

Outlet

A

A

shown

- Model DPF 250 is not licensed to bear the AMCA Certified Ratings Seal.

0.80.4 0.60.2 1.2 1.4

Lwo(A)

K

R

3Volume Q(m /h)

Outlet Vel V(m/s)

Vel Pressure Pv(Pa)

3Volume Q(m /s)

2000

1800

1600

1400

1200

1000

800

200

600

400

0

1600

1800

2000

2200

2400

2600

2800

3000

3200

3500

RPM - 4100

3800

0.10.10.1

43%43%43%

53%53%53%

63%63%63%


63%63%63%57%57%57%

808080

858585

909090

95 95 dB(A)95 dB(A)

707070

0.20.20.2

0.370.370.37

0.550.550.55

0.750.750.75

1.11.11.1

1.51.51.5

2.02.02.0

757575

1400

2.52.52.5

0.0 0.8 1.8 2.00.4 1.61.41.21.00.60.2

0 4000 70002000 600050003000

0 5 10 15 20 25

0 1 5 10 50 100 150 200 300 400 500


K

R

Shaft Power H in kW


7

DPF 280

Outlet

A

A

shown


1000

Lwo(A)


DPF 315K

R

Shaft Power H in kW


3Volume Q(m /h)

Outlet Vel V(m/s)

Vel Pressure Pv(Pa)

3Volume Q(m /s)

2000

1800

1600

1400

1200

1000

800

200

600

400

0

1300

1500

1700

1900

2100

2300

2500

2700

2900

3100

3300

RPM - 3600

0.20.20.2

44%44%44%

53%53%53%

63%63%63%


64%64%64%57%57%57%

808080

858585

909090

95 95 dB(A)95 dB(A)

757575

0.370.370.37

0.550.550.55

0.750.750.75

1.11.11.1

1.51.51.5

3.03.03.0

0.0 1. 0 1.5 2.00.5

0 4000 80002000 6000

0 5 10 15 20 25

0 1 5 10 50 100 150 200 250 300 350 400

707070

8

Outlet

A

A

shown


2.22.22.2

Lwo(A)


DPF 355K

R

Shaft Power H in kW

1500

1850

2300

2450

3000

RPM 3250

1700

2800

1300

1100

0.20.20.2

0.370.370.37

0.550.550.55

0.750.750.75

1.11.11.1

2.22.22.2

1.51.51.5

3.03.03.0 4.04.04.0

707070

757575 808080

858585

909090

100 100 dB(A)100 dB(A)

959595

45%45%45%

55%55%55%

64%64%64%


65%65%65%58%58%58%

2000

2150

2600

3Volume Q(m /h)

Outlet Vel V(m/s)

Vel Pressure Pv(Pa)

0

0

0

5 10 15 20 25

5000 10000

1 5 10 50 100 150 200 250 300 350 400

0.0 1. 0 1.5 3.02.0 2.50.5 3Volume Q(m /s)

9

0

200

400

600

800

1000

1200

1400

1600

1800

2000

A

Outlet

Ashown



Lwo(A)


DPF 400K

R

Shaft Power H in kW

1250

1550

2000

2200

2650

RPM 2850

1400

2500

1100

0.370.370.37

0.550.550.55

0.750.750.75

1.11.11.1

1.51.51.5

3.03.03.0

2.22.22.2

4.04.04.0

5.55.55.5

757575

808080858585

909090

959595

100 100 dB(A)100 dB(A)

45%45%45%

56%56%56%

64%64%64%

65%65%65%58%58%58%

1700

1850

2350

707070


0.0 1. 0 1.5 3.02.0 2.50.5 3.5 4.0

0 1 5 10 50 100 150 200 250 300 350 450400

0 5 10 15 20 25

0 5000 10000 3Volume Q(m /h)

Outlet Vel V(m/s)

Vel Pressure Pv(Pa)

3Volume Q(m /s)

10

200

400

600

800

1000

1200

1400

1600

1800

2000

A

Outlet

Ashown



Lwo(A)


DPF 450K

R

Shaft Power H in kW

1050

1300

1400

2050

2200

RPM-2550

1200

900

0.370.370.37

1.11.11.1

1.51.51.5

2.22.22.2

3.03.03.0

4.04.04.0

5.55.55.5

7.07.07.0

707070

808080858585

909090

959595

100 100 dB(A)100 dB(A)

45%45%45%

57%57%57%

65%65%65%


65%65%65%58%58%58%

757575

1500

1600

1750

1900

2350

0.750.750.75

0.550.550.55

0

5 10 15 20 250

1 5 10 50 100 150 200 250 300 350 400

5000 10000 15000

0 1 2 3 4 5

0 450

3Volume Q(m /h)

Outlet Vel V(m/s)

Vel Pressure Pv(Pa)

3Volume Q(m /s)

11

200

400

600

800

1000

1200

1400

1600

1800

2000

Outlet

A

A

shown


0


Lwo(A)

12

DPF 500 FEG 75

K

R


2000

1800

1600

1400

1200

1000

800

600

400

200

0

800

1000

1200

1300

1400

1500

1600

1700

1800

1900

2000

RPM - 2300

2100

0.370.370.37

0.550.550.55

0.750.750.75

1.11.11.1

1.51.51.5

2.22.22.2

3.03.03.0

4.04.04.0

5.55.55.5 7.07.07.0

9.09.09.0

45%45%45%

58%58%58%

68%68%68%


66%66%66%59%59%59%

757575808080 858585

909090

959595

100 100 dB(A)100 dB(A)

0.0 1. 0 4.0 6.05.03.02.0 3Volume Q(m /s)

3Volume Q(m /h)

Outlet Vel V(m/s)

Vel Pressure Pv(Pa)

Shaft Power H in kW


0

0

0

5 10 15 20 25

5000 10000 15000 20000

1 5 10 50 100 150 200 250 300 350 400

A

A

Outlet

Lwo(A)

A

A

Outlet


DPF 560 FEG 75

K

R

2000

1800

1600

1400

1200

1000

800

600

400

200

Shaft Power H in kW


0

700

900

1000

1100

1200

1300

1400

1500

1600

1750

1900

RPM-2100

757575

808080858585

909090

959595

100 100 dB(A)100 dB(A)

3Volume Q(m /s)

3Volume Q(m /h)

Outlet Vel V(m/s)

Vel Pressure Pv(Pa)

45%45%45%

58%58%58%

68%68%68%


66%66%66%59%59%59%

50000 10000 15000 20000 25000

0 5 10 15 20 25

0 1 5 10 50 100 150 200 250 300 350 400

13

0 1 4 6 7532

0.370.370.37

0.550.550.55

0.750.750.75

1.11.11.1

1.51.51.5

2.22.22.2

3.03.03.0

4.04.04.0

5.55.55.5

7.57.57.5

11.011.011.0

Lwo(A)


A

A

Outlet

DPF 630 FEG 75

K

R

Shaft Power H in kW


600

800

900

1000

1200

1300

1400

1500

1650

RPM-1850

700

1100

0.370.370.37

0.750.750.75

1.11.11.1

1.51.51.5

2.22.22.2

3.03.03.0

4.04.04.0

5.55.55.5

7.07.07.0

12.512.512.59.09.09.0

707070

808080858585

909090

959595

100100100

105 105 dB(A)105 dB(A)

757575

3Volume Q(m /s)

3Volume Q(m /h)

Outlet Vel V(m/s)

Vel Pressure Pv(Pa)

45%45%45%

58%58%58%

68%68%68%


66%66%66%59%59%59%

50000 10000 15000 20000 3000025000

0 5 10 15 20 25

0 1 5 10 50 100 150 200 250 300 350 400

14

2000

1800

1600

1400

1200

1000

800

600

400

200

00 1 4 6 8 97532

Lwo(A)

600

800

900

1000

1200

1300

1400

1500

RPM-1650

700

1100

5000.50.50.5

0.750.750.75

1.11.11.1

1.51.51.5

2.22.22.2

3.03.03.0

4.04.04.0

5.55.55.5

12.012.012.0

16.016.016.0

8.08.08.0

707070

808080858585

909090

959595

100100100

105 105 dB(A)105 dB(A)

757575

45%45%45%

58%58%58%

68%68%68%


66%66%66%59%59%59%


A

A

Outlet

DPF 710 FEG 75

K

R

Shaft Power H in kW


3Volume Q(m /s)

3Volume Q(m /h)

Outlet Vel V(m/s)

Vel Pressure Pv(Pa)

0 5 10 15 20 25

0 1 5 10 50 100 150 200 250 300 350 400

50000 10000 20000 3000025000 35000 40000

15

2000

1800

1600

1400

1200

1000

800

600

400

200

0 0 4 6 82 10 12

15000

Lwo(A)


A

A

Outlet

DPF 800 FEG 75

K

R

Shaft Power H in kW


600

800

900

1000

1200

1300

RPM-1450

700

1100

500

757575808080

858585

909090

959595

105 105 dB(A)105 dB(A)

100100100

3Volume Q(m /s)

3Volume Q(m /h)

Outlet Vel V(m/s)

Vel Pressure Pv(Pa)

45%45%45%

58%58%58%

68%68%68%


66%66%66%59%59%59%

0 5 10 15 20 25

0 1 5 10 50 100 150 200 250 300 350 400

50000 10000 20000 3000025000 35000 4500015000 40000 50000

16

2000

1800

1600

1400

1200

1000

800

600

400

200

00 2 4 6 8 10 12 14

0.750.750.75

1.11.11.1

1.51.51.5

2.22.22.2

3.03.03.0

4.04.04.0

5.55.55.5

11.011.011.0

8.08.08.0

15.015.015.020.020.020.0

Lwo(A)


A

Outlet

A

DPF 900 FEG 75

K

R

Shaft Power H in kW


600

800

900

1000

1200

RPM 1300

700

1100

500

4000.750.750.75

1.11.11.1

1.51.51.5

2.22.22.2

3.03.03.0

4.04.04.0

5.55.55.5

11.011.011.0

8.08.08.0

15.015.015.0

20.020.020.0 25.025.025.0

757575808080

858585

909090

959595

105 105 dB(A)105 dB(A)

100100100

45%45%45%

58%58%58%

68%68%68%


66%66%66%59%59%59%

0 5 10 15 20 25

0 1 5 10 50 100 150 200 250 300 350 400

50000 10000 20000 3000025000 35000 4500015000 40000 50000 55000 60000

0 2 4 6 8 10 12 14 16 18 3Volume Q(m /s)

3Volume Q(m /h)

Outlet Vel V(m/s)

Vel Pressure Pv(Pa)

17

2000

1800

1600

1400

1200

1000

800

600

400

200

0

Lwo(A)


A

Outlet

A

DPF 1000 FEG 75

K

R

Shaft Power H in kW


500

800

900

975

RPM-1150

600

1050

1.51.51.5

2.22.22.2

3.03.03.0

4.04.04.0

5.55.55.5

15.015.015.0

25.025.025.0

757575808080

858585 909090

959595

105 105 dB(A)105 dB(A)

45%45%45%

58%58%58%

68%68%68%


66%66%66%59%59%59%

400

700

7.57.57.5

11.011.011.0

20.020.020.0 30.030.030.0

0 1 5 10 50 100 150 200 250 300 350 400

0 5 10 15 20 25

50000 10000 20000 3000025000 35000 4500015000 40000 50000 55000 60000 65000 70000 75000

3Volume Q(m /s)

3Volume Q(m /h)

Outlet Vel V(m/s)

Vel Pressure Pv(Pa)

18

2000

1800

1600

1400

1200

1000

800

600

400

200

00 2 4 6 8 10 12 14 16 20 2218

100100100

Lwo(A)

19

E

A

C

AB

D

DPF Plenum Fans 250-1000

Dimensions

DPF V1.0 March 2020

201307

dpf-backward curve-red-plenum fans-a4 only

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