201 Sun Valley Circle
Fenton, MO 63026
Phone 636.343.2021

Vortron System Selection Guide


Click here for printable Selection Guide!

Select the RIGHT AirPoweräBlower for your Application!

Proper blower selection is highly dependent on system design and the ultimate performance objective, be it for air-knife use, fluidized bed, pond aeration, or one of many other possible applications.  Vortron is always available to assist with system development and application recommendations.  Guidelines specific to Air-Knife applications are also available.

In all cases, it is the piping and discharge system characteristic that determines the blower selection.  In general, the piping system will exhibit a rising pressure vs. flow rate characteristic, where .  blowers, on the other hand, exhibit the opposite characteristic where pressure will, in general, drop-off with increasing flow rate.  Where the system and blower curves intersect defines the operating point for the entire system.

Once the Performance Requirements are Known…

Selecting the best AirPower model for the application is straightforward.  From the chart below, find the system operating pressure in one of the left-hand columns, then move over to the required flow rate, selecting the operating point "box".  This is the proper AirPower unit for the application, pre-selected to deliver best possible efficiency.

4.70

9.56

130

 

J70
265

J70
253

J70
253

J70
253

J70
253

J70
265

Z40e
215

Z40e
220

Z40e
220

Z40e
220

Z40e
225

Z40e
230

4.34

8.83

120

 

J70
250

J70
245

J70
240

J70
240

J70
240

J70
245

Z40e
210

Z40e
210

Z40e
210

Z40e
215

Z40e
220

Z40e
220

3.97

8.09

110

 

J70
240

J70
235

J70
230

J70
230

J70
230

J70
235

Z40e
200

Z40e
200

Z40e
200

Z40e
210

Z40e
210

Z40e
215

3.61

7.35

100

X40
250

X40
250

X40
245

X40
240

X40
240

X40
245

Z40e
193

Z40e
193

Z40e
193

Z40e
193

Z40e
200

Z40e
200

Z40e
210

3.25

6.62

90

X40
235

X40
235

X40
230

X40
230

X40
230

X40
235

Z40e
185

Z40e
185

Z40e
185

Z40e
185

Z40e
193

Z40e
193

Z40e
200

2.89

5.88

80

X40
220

X40
220

X40
215

X40
215

X40
220

X40
220

Z40e
177

Z40e
177

Z40e
177

Z40e
182

Z40e
187

Z40e
187

Z40e
193

2.53

5.15

70

X40
210

X40
200

X40
200

X40
210

X40
210

X40
215

Z40e
165

Z40e
165

Z40e
165

Z40e
172

Z40e
177

Z40e
182

Z40e
187

2.17

4.41

60

X40
200

X40
195

X40
190

X40
190

X40
195

X40
195

Z40e
155

Z40e
155

Z40e
160

Z40e
165

Z40e
170

Z40e
177

Z40e
182

1.81

3.68

50

X40
190

X40
187

X40
182

X40
182

X40
182

X40
182

Z40e
144

Z40e
144

Z40e
150

Z40e
155

Z40e
160

Z40e
165

Z40e
177

1.45

2.94

40

X40
175

X40
175

X40
165

X40
165

X40
165

X40
165

Z40e
140

Z40e
140

Z40e
140

Z40e
150

Z40e
150

Z40e
160

Z40e
170

     

100

200

300

400

500

600

700

800

900

1000

1100

1200

1300

Flow - SCFM

CHART #1

 

Determine Power Requirements…

The final step in the selection process is to determine power required to operate the system, AT the operating point of interest.  This is highly important as motor sizing and overall utility requirements and operational costs will depend upon the system power.  To assist this assessment, Vortron has tabulated shaft power requirements to operate AirPower units.  Here, by selecting the system operating point in the same fashion as the previous exercise, actual blower power is readily obtained:

1.   Find the operating point "box" knowing system pressure and airflow

2.   Read the blower power (HP) directly

4.70

9.56

130

 

6.3

8.4

10.3

12.3

14.4

16.8

19.2

21.1

23.1

25.4

27.7

30.0

4.34

8.83

120

5.7

7.7

9.4

11.3

13.4

15.6

17.6

19.5

21.5

23.6

25.8

27.9

3.97

8.09

110

5.2

7.0

8.6

10.4

12.3

14.3

16.2

17.9

19.8

21.8

23.8

25.8

3.61

7.35

100

2.5

4.5

6.1

7.5

9.2

11.0

13.2

14.7

16.3

18.2

20.0

21.8

23.8

3.25

6.62

90

2.2

4.0

5.5

6.8

8.3

10.0

11.9

13.3

14.8

16.5

18.1

19.8

21.5

2.89

5.88

80

1.9

3.6

4.8

6.0

7.5

9.1

10.7

11.9

13.3

14.7

16.2

17.7

19.4

2.53

5.15

70

1.7

3.1

4.2

5.3

6.6

8.2

9.4

10.5

11.7

13.0

14.3

15.8

17.3

2.17

4.41

60

1.4

2.6

3.6

4.6

5.7

7.2

8.2

9.0

10.1

11.2

12.5

13.7

15.0

1.81

3.68

50

1.2

2.2

3.0

3.8

4.8

6.0

7.0

7.6

8.6

9.7

10.6

11.6

12.7

1.45

2.94

40

1.0

1.7

2.4

3.1

4.0

5.0

5.7

6.2

7.0

7.9

8.8

9.5

10.6

     

100

200

300

400

500

600

700

800

900

1000

1100

1200

1300

Flow - SCFM

CHART #2

NOTE – Blower power tabulated at inlet air density of 0.075 lbm/ft3; inlet temperature of 528°R. All power readings correspond to the specific AirPower Model, performance tested at the operating point. Units larger than 25 HP are currently under development.

Note lastly that all power readings correspond to the specific AirPower model, performance tested at the operating point.

Application Example

An airknife drying system has been specified for high performance in-line drying, with a knife manifold pressure of approximately 73 in-H2O.  This is to achieve a discharge velocity of approximately 33,500 feet-per-minute.  A quadrant of four 24-inch long knives (96" total) with 0.042" gap is proposed, with a total air consumption of approximately 925 CFM.  Plant environment inlet air at approximately 68°F is assumed.  Select a blower for this application.

Solution – Referring to Chart #1, 70 in-H2O pressure at 900 CFM indicates a Z40e-165 selection as the initial choice.  Chart #2 indicates the Z40e-165 will be operating at approximately 12 HP, thus, a 15 HP motor is selected for this particular operating point.  At 15 HP, flows up to 1,000 CFM and approaching 80 in-H2O can be achieved.  Therefore, sufficient margin is available for tuning purposes.

Published by Process Air Solutions
201 Sun Valley Circle Fenton, MO 63026 Phone 636.343.2021 Email: sales@processairsolutions.com

ã2005 Process Air Solutions