CALCULATE_FANGRID

Owned by System User
Last updated: Apr 19, 2024
137 min read

This function is used to calculate high air performance levels achieved by a FanGrid, this means several connected fans will run parallel.

Method Call:

Result = CALCULATE_FANGRID(InputString, OutputBuffer)

Input:

Position

Name

Description

Example Value

Required

Position

Name

Description

Example Value

Required

0

OP1: Air volume

air volume [m³/h]

12000

Y

1

OP1: Pressure difference (static)

pressure difference (static) [Pa]

400

Y

2

OP1: Operating hours per year

operating hours per year [h]

1500

Y

3

OP2: Air volume

air volume [m³/h]

17000

N

4

OP2: Pressure difference (static)

pressure difference (static) [Pa]

500

N

5

OP2: Operating hours per year

operating hours per year [h]

1620

N

6

OP3: Air volume

air volume [m³/h]

22000

N

7

OP3: Pressure difference (static)

pressure difference (static) [Pa]

600

N

8

OP3: Operating hours per year

operating hours per year [h]

1740

N

9

OP4: Air volume

air volume [m³/h]

27000

N

10

OP4: Pressure difference (static)

pressure difference (static) [Pa]

700

N

11

OP4: Operating hours per year

operating hours per year [h]

1860

N

12

OP5: Air volume

air volume [m³/h]

32000

N

13

OP5: Pressure difference (static)

pressure difference (static) [Pa]

800

N

14

OP5: Operating hours per year

operating hours per year [h]

1980

N

15

redundant fans

number of redundant fans

1

N

16

width

width installation space for all fans [mm]

2074

N

17

height

height installation space for all fans [mm]

1200

N

18

backward flow

F = with or T = without backflow if the redundant fans fail

F

N

19

number of fans fixed

fixed definition regarding the number of fans in the Fangrid

 3

N

20

min fans

filter for the minimum number of fans in the FanGrid

 1

N

21

max fans

filter for the maximum number of fans in the FanGrid

 9999

N

22

fan type

filter for the part number of the fan in the FanGrid 

R3G400AY8701

N

23

Filter only one per size group

show only one per size group

F

N

24

Filter W > 1.5 x Wmin

solutions that consume more energy than 1.5 x Wmin

F

N

25

Filter too small installation space

ignore solutions that are too large for the available installation space

T

N

26

air density (Rho)

density of the air [kg/m³]

1,2

N

27

altitude

altitude [m] (only required if Rho is not given)

201

N

28

air temperature

temperature of the air [°C] (only required if Rho is not given)

23

N

29

return format

return format Json

T = JSON

F = CSV

F

N

30

buffer size

size of the output buffer

1000000

N

31

path chart

destination path to save chart

C:\temp\

N

32

height chart

height of the diagram [pixel]

600

N

33

width chart

width of the diagram [pixel]

800

N

34

calculation method

calculation method 

0 = without calculation Installation losses

1 = calculation installation losses with rlt method

2 = calculation installation losses with ebmpapst method

1

N

35

intake finger guard

calculation method for the loss of air power

0 = no guard grill

1 = with guard grill

0

N

36

Get FanGrid-Chart

T = Outputs a SVG graphic  (The graphic can only be created and output if there is only one solution)

F = No graphic 

T

N

Example InputString

12000;400;1500;17000;500;1620;22000;600;1740;27000;700;1860;32000;800;1980;1;2074;1200;F;;;;R3G400AY8701;F;F;T;1,2;201;23;F;1000000;C:\temp\;600;800;1;0;T;

Output: 

The DLL returns the results in the variable "OutputBuffer":

CSV-Format

You will get back a list as a string, where the data is separated by a semicolon.

The list will be structured as follows:

Positon

Name

Description

Example Value

Datatype

Positon

Name

Description

Example Value

Datatype

0

fan idno

key for related measurement of the fan

159550

Integer

1

fan type

part number of the fan

R3G400AY8701

Text

2

numFans

number of fans

8

Integer

3

EPerYearSum

electrical work per year [kWh]

69000

Integer

4

UN[VAC]

phase + nominal voltage range [V]

3~380-480

Text

5

speed factor

0.1 > speed factor <= 1

9430

Decimal

6

CF_IS

CorrectionFactorInstallationSpace

0,971

Decimal

7

B_FW

installation space width [mm]

2074

Decimal

8

H_FW

installation space height [mm]

1200

Decimal

9

B_Fan

fan width [mm]

455,0

Decimal

10

H_Fan

fan height [mm]

455,0

Decimal

11

B_IS

width per fan [mm]

518,5

Decimal

12

H_IS

height per fan [mm]

600

Decimal

13

LR_D

average impeller fan diameter Ø [mm]

455

Decimal

14

INLET_D

inlet diameter

272,0

Decimal

15

row

count of rows in fanwall

4

Integer

16

column

count of columns in fanwall

2

Integer

17

rhoC

air density rho calculation

1,2

Decimal

18

rhoM

air density rho measurement

1,1421

Decimal

19

Fan_OK

fan is suitable in operating point?

T = True

F = False

T

Text

 

20

OP1

OperatingPoint Number 1

1

Integer

21

qv1

air flow [m³/h]

12000

Decimal

22

pfs1

static pressure increase [Pa]

400

Decimal

23

hours1

operating time per year [h/a]

1500

Decimal

24

eta_esd1

overall static efficiency [%]

39,1

Decimal

25

eta_ed1

overall efficiency [%]

39,4

Decimal

26

P_ed1

input power [W]

3410

Decimal

27

n

fan speed [1/min]

1363

Decimal

 

28

OP2

OperatingPoint Number 2

2

Integer

29

qv2

air flow [m³/h]

17000

Decimal

30

pfs2

static pressure increase [Pa]

500

Decimal

31

hours2

operating time per year [h/a]

1620

Decimal

32

eta_esd2

overall static efficiency [%]

46,7

Decimal

33

eta_ed2

overall efficiency [%]

47,3

Decimal

34

P_ed2

input power [W]

5060

Decimal

35

n

fan speed [1/min]

1546

Decimal

 

36

OP3

OperatingPoint Number 3

3

Integer

37

qv3

air flow [m³/h]

22000

Decimal

38

pfs3

static pressure increase [Pa]

600

Decimal

39

hours3

operating time per year [h/a]

1740

Decimal

40

eta_esd3

overall static efficiency [%]

51,4

Decimal

41

eta_ed3

overall efficiency [%]

52,3

Decimal

42

P_ed3

input power [W]

7140

Decimal

43

n

fan speed [1/min]

1721

Decimal

 

44

OP4

OperatingPoint Number 4

4

Integer

45

qv4

air flow [m³/h]

27000

Decimal

46

pfs4

static pressure increase [Pa]

700

Decimal

47

hours4

operating time per year [h/a]

1860

Decimal

48

eta_esd4

overall static efficiency [%]

54,2

Decimal

49

eta_ed4

overall efficiency [%]

55,5

Decimal

50

P_ed4

input power [W]

9690

Decimal

51

n

fan speed [1/min]

1893

Decimal

 

52

OP5

OperatingPoint Number 5

5

Integer

53

qv5

air flow [m³/h]

32000

Decimal

54

pfs5

static pressure increase [Pa]

800

Decimal

55

hours5

operating time per year [h/a]

1980

Decimal

56

eta_esd5

overall static efficiency [%]

55,8

Decimal

57

eta_ed5

overall efficiency [%]

57,4

Decimal

58

P_ed5

input power [W]

12700

Decimal

59

n

fan speed [1/min]

2064

Decimal

Example OutputBuffer

159550;R3G400AY8701;8;69000;3~380-480;9430;-957316;2074;1200;455.0;455.0;518,5;600;455;272.0;4;2;1,2;1,1421;T;1;12000;400;1500;39,1;39,4;3410;1363;2;17000;500;1620;46,7;47,3;5060;1546;3;22000;600;1740;51,4;52,3;7140;1721;4;27000;700;1860;54,2;55,5;9690;1893;5;32000;800;1980;55,8;57,4;12700;2064;

JSON-Format

The JSON will be structured as follows:

IDNO_Meas: Messaurement id number Type: Fan Typ NoFans: number of fans E_tot [kWh]: electrical work UN [VAC]: phase + voltage Range Speed factor: speed factor Corr. factor: Correctur factor B_Fan [mm]: fan width H_Fan [mm]: fan height B_IS [mm]: width per fan H_IS [mm]: height per fan Imp_D [mm]: impeller diameter Inlet_D [mm]: inlet diameter outlet area[m^2]: outlet area a1_distance [mm]: distance to the nearest mounting part or wall in height a2_distance [mm]: distance to the nearest mounting part or wall in width a_distance [mm]: average distance to the nearest mounting part or wall Width of Fanwall[mm]: installation space width Height of Fanwall [mm]: installation space height Calculation method air power loss: Calculation method for the loss of air power intake finger guard: Calculation method for the loss of air power No_row: count of row FanWall No_col: count of column FanWall rho calc to [kg\/m^3]: air density rho calculation rho mess at [kg\/m^3]: air density rho measurement OP_0 : Operatingpoint 0 qv [m^3\/h]: air flow pfs [Pa]: pressure static hours: operating time Radius_BubbleSeries: radius Bubble ETA_esd [%]: overall static efficienc ETA_ed [%]: overall efficiency P_ed [W]: input power n [1\/min]: speed SFP [kW\/(m^3\/s)]: specific fan power Uctrl [V]: control voltage Pd [Pa]: dynamic pressure(outlet) PTOT [Pa]: total pressure increase Current [A]: current phase E [kWh]: electrical work P_Shaft [W]: motor shaft output power K2_effects_of_installation_space_[Pa]: RLT effects of installation space K7_effects_with_guard_grille_[Pa]: RLT effects with guard grille pv_Pressure_loss_due_to_installation_[Pa]: RLT Pressure loss due to installation Pv_Power_loss_due_to_installation_[W]: RLT Power loss due to installation Lwss: sound power level of Soundssuctionsideoctaves - value was added to the value of the single fan 250: frequency 250 500: frequency 500 1000: frequency 1000 2000: frequency 2000 4000: frequency 4000 8000: frequency 8000 Lwps: sound power level of Soundspressuresideoctaves - value was added to the value of the single fan 250: frequency 250 500: frequency 500 .... LwAss: sound pressure level of Soundssuctionsideoctaves - value was added to the value of the single fan LwAps: sound pressure level of Soundspressuresideoctaves - value was added to the value of the single f LwssGRD: sound power level of Soundssuctionsideoctaves LwpsGRD: sound power level of Soundspressuresideoctaves LwAssGRD: sound pressure level of Soundssuctionsideoctaves LwApsGRD: sound pressure level of Soundspressuresideoctaves OP_1: Operatingpoint 1 qv [m^3\/h]: air flow pfs [Pa]: pressure static hours: operating time ... pv_tot_[Pa]: pv total in PA Pv_tot_[W]: pv total in W NoMp: Number of measuring points NoOp: Number of operating points NoFans: Number of fans NoFanRed: Number of redundant fans Input WidthChart: Width of exported chart image in pixels Input HeightChart: Height of exported chart image in pixels Input Called: Called Function Fan: max curve at operating conditions from single fan X: qv (air flow) Y: pfs (pressure static) FanBsp: b spline from max curve at operating conditions from single fan Grid: all measurement points of the max curve are converted to the installation conditions GridBsp: b spline from all measurement points of the max curve are converted to the installation conditions Red: max curve at operating conditions with backward flow RedBsp: b spline from max curve at operating conditions with backward flow X: qv (air flow) Y: pfs (pressure static) Z: radius Bubble

 Example Diagramm (only with FanType):

Result: