Duct Static Calc. ASHRAE Method in SI Units
Short Description
esp...
Description
MECH. INSTALLATIONS / HVAC / 358489794.xls / AHU-11-1
Project
:
Location :
RAK BANK @ DSO Duct Type
Fitting Duct Element / No. Fitting
- Inputs
RAK BANK @DSO
Enter 1-for Str duct. Enter 2-for Duct fittings.
Unit ref : AHU - 11 - 01
Duct / Fitting Size (mm)
Duct area
Perim etre
Air Flow
Hydraulic Dia (Dh)
Reynolds No.
m2
m
L/s
m
Re
*
Enter Pr. loss from manufacturer data for VCD, FD, SA etc.
W
H
@ Roughne Velocity ss factor V
e
m/s
Date:
Duct Size (Eq. Round)
Velocity Pr.
mm
Pa
#
Fitting loss factor
@ Duct Pr. Loss rate
Length L
+
Pa /m
m
20 June 2017 Total Pr. Friction Cummulativ Loss Factor e Pr. Loss Pa
Pa
SUPPLY SIDE 1 2 3 4 5 6 7 8 9 10 11
Sound atten. Straight 90 deg. Elbow Straight 90 deg. Elbow Straight Transition Straight Straight 90 deg. Mittere Straight Pleni
-
-
-
-
0.090 -
-
-
-
-
12
90 deg mittere
-
-
-
-
-
-
-
-
13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29
Straight Straight Strainght Straight Straignt Straignht 90 deg Eleb F.D. Straight 90 deg Eleb Straight Straight 90 deg elbow VCD Straight 90 deg Eleb Grilles
-
-
-
-
-
-
-
-
1 / 13
-
-
-
-
-
-
-
-
-
-
-
-
MECH. INSTALLATIONS / HVAC / 358489794.xls / AHU-11-1 Duct Type Fitting Duct Element / No. Fitting
30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65
R VCD Straight R FD 90 deg. Elbow Straight Transition Straight Transition Straight Transition Straight Transition Straight Transition Straight 90 deg mittere Straight Pleni 90 deg mittere R FD Straight R S.A. Branch Straight * VCD SS wire mesh Enlargement * VCD Straight * Mitre Bend * Mitre Bend Straight * Fire Damper Branch Transition Straight Branch
Enter 1-for Str duct. Enter 2-for Duct fittings.
Duct / Fitting Size (mm)
Perim etre
Air Flow
Hydraulic Dia (Dh)
Reynolds No.
m2
m
L/s
m
Re
e
-
-
-
-
-
*
Enter Pr. loss from manufacturer data for VCD, FD, SA etc.
W
H
@ Roughne Velocity ss factor V
Duct area
2 / 13
m/s
-
Duct Size (Eq. Round)
Velocity Pr.
mm
Pa
-
-
#
Fitting loss factor
@ Duct Pr. Loss rate
Length L
Pa /m
m
-
+
Total Pr. Friction Cummulativ Loss Factor e Pr. Loss Pa
-
Pa
-
-
MECH. INSTALLATIONS / HVAC / 358489794.xls / AHU-11-1 Duct Type Fitting Duct Element / No. Fitting
66 67 68 69 70 71 72
Transition Straight Branch Transition Straight Branch Transition
Enter 1-for Str duct. Enter 2-for Duct fittings.
Duct / Fitting Size (mm)
Perim etre
Air Flow
Hydraulic Dia (Dh)
Reynolds No.
m2
m
L/s
m
Re
e
-
-
-
-
-
*
Enter Pr. loss from manufacturer data for VCD, FD, SA etc.
W
H
@ Roughne Velocity ss factor V
Duct area
Total Air Static (Pa) * Pressure drop based on manufacturer data. # from ASHRAE Fitting loss factors for duct fittings. + Duct length are to fitting centerlines.
m/s
-
Duct Size (Eq. Round)
Velocity Pr.
mm
Pa
-
-
#
Fitting loss factor
@ Duct Pr. Loss rate
Length L
Pa /m
m
-
+
Total Pr. Friction Cummulativ Loss Factor e Pr. Loss Pa
-
Pa
-
-
-
3 / 13
MECH. INSTALLATIONS / HVAC / 358489794.xls / AHU-RF-01 WITH SAFETY FACTOR
Project
:
Location :
RAK BANK @ DSO Duct Type
Fitting Duct Element / No. Fitting
- Inputs
RAK BANK @DSO
Enter 1-for Str duct. Enter 2-for Duct fittings.
Unit ref : AHU-RF-01
Duct / Fitting Size (mm)
Duct area
Perim etre
Air Flow
Hydraulic Dia (Dh)
Reynolds No.
m2
m
L/s
m
Re
*
Enter Pr. loss from manufacturer data for VCD, FD, SA etc.
W
H
@ Roughne Velocity ss factor V
e
m/s
Date:
Duct Size (Eq. Round)
Velocity Pr.
mm
Pa
#
Fitting loss factor
@ Duct Pr. Loss rate
Length L
+
Pa /m
m
20 June 2017 Total Pr. Friction Cummulativ Loss Factor e Pr. Loss Pa
Pa
SUPPLY SIDE 1 2 3 4 5 6 7 8 9 10 11
Sound atten. Straight 90 deg. Elbow Straight 90 deg. Elbow Straight Transition Straight Straight 90 deg. Mittere Straight Pleni
50 1 2 1 2 1 2 1 1 2 1
1150 1150 1150 1150 1150 1150 500 500 500 1150
500 500 500 500 500 500 1150 1150 1150 500
0.58 0.58 0.58 0.58 0.58 0.58 0.58 0.58 0.58 0.58
3.30 3.30 3.30 3.30 3.30 3.30 3.30 3.30 3.30 3.30
3517 3517 3517 3517 3517 3517 3517 3517 3517 3517
697.0 697.0 697.0 697.0 697.0 697.0 697.0 697.0 697.0 697.0
314,542 314,542 314,542 314,542 314,542 314,542 314,542 314,542 314,542 314,542
0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090
6.80 6.80 6.80 6.80 6.80 6.80 6.80 6.80 6.80 6.80
0.812 0.812 0.812 0.812 0.812 0.812 0.812 0.812 0.812 0.812
27.81 27.81 27.81 27.81 27.81 27.81 27.81 27.81 27.81 27.81
12
90 deg mittere
2
1150
500
0.58
3.30
3517
697.0
314,542
0.090
6.80
0.812
27.81
13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29
Straight Straight Strainght Straight Straignt Straignht 90 deg Eleb F.D. Straight 90 deg Eleb Straight Straight 90 deg elbow VCD Straight 90 deg Eleb Grilles
1 1 1 1 1 1 2 2 1 2 1 1 2 2 1 2 4
1150 1100 950 800 600 350 350 500 500 500 500 450 300 300 300 300
500 500 500 500 500 500 500 300 300 300 300 200 200 200 200 200
0.58 0.55 0.48 0.40 0.30 0.18 0.18 0.15 0.15 0.15 0.15 0.09 0.06 0.06 0.06 0.06 -
3.30 3.20 2.90 2.60 2.20 1.70 1.70 1.60 1.60 1.60 1.60 1.30 1.00 1.00 1.00 1.00 -
3517 2930 2344 1758 1172 586 586 586 586 586 586 402 192 192 192 192
697.0 687.5 655.2 615.4 545.5 411.8 411.8 375.0 375.0 375.0 375.0 276.9 240.0 240.0 240.0 240.0 -
314,542 269,080 234,566 193,953 151,048 98,309 98,309 105,316 105,316 105,316 105,316 91,070 54,884 54,884 54,884 54,884 -
0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 -
6.80 5.89 5.39 4.75 4.17 3.60 3.60 4.23 4.23 4.23 4.23 4.95 3.44 3.44 3.44 3.44 -
0.812 0.795 0.744 0.687 0.598 0.455 0.455 0.420 0.420 0.420 0.420 0.321 0.266 0.266 0.266 0.266 -
27.81 20.92 17.50 13.56 10.47 7.78 7.78 10.77 10.77 10.77 10.77 14.77 7.14 7.14 7.14 7.14 -
4 / 13
0.110 0.110 0.080
0.120 0.120
0.100 0.120 0.110
0.110 0.120 0.100
0.55 0.55 0.55 0.55 0.55 0.55 0.55 0.55 0.55 0.55
2.00 15.00 2.00 3.00 2.00 2.00
0.55 0.55 0.44 0.40 0.34 0.31 0.34 0.34 0.52 0.52 0.52 0.52 1.00 0.63 0.63 0.63 0.63 -
1.00 4.50 4.00 4.00 4.00 4.00
2.50 2.50 2.50
7.00
0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01
50.00 1.11 3.06 8.30 3.06 1.11 2.22 1.66 1.11 3.34 1.11
50.000 51.106 54.165 62.461 65.520 66.627 68.851 70.511 71.617 74.954 76.060
0.01
3.34
79.397
0.01 0.01 0.01 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 -
0.55 1.96 1.58 1.36 1.26 1.38 0.78 1.29 1.29 1.18 1.29 2.49 0.79 0.86 4.38 0.71 4.00
79.950 81.913 83.494 84.857 86.116 87.492 88.270 89.562 90.851 92.036 93.325 95.817 96.603 97.460 101.839 102.553 106.553
MECH. INSTALLATIONS / HVAC / 358489794.xls / AHU-RF-01 WITH SAFETY FACTOR Duct Type Fitting Duct Element / No. Fitting
30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65
R VCD Straight R FD 90 deg. Elbow Straight Transition Straight Transition Straight Transition Straight Transition Straight Transition Straight 90 deg mittere Straight Pleni 90 deg mittere R FD Straight R S.A. Branch Straight * VCD SS wire mesh Enlargement * VCD Straight * Mitre Bend * Mitre Bend Straight * Fire Damper Branch Transition Straight Branch
Enter 1-for Str duct. Enter 2-for Duct fittings.
Duct / Fitting Size (mm)
Duct area
Perim etre
Air Flow
Hydraulic Dia (Dh)
Reynolds No.
*
Enter Pr. loss from manufacturer data for VCD, FD, SA etc.
2 1 2 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 2 1 48
@ Roughne Velocity ss factor V
W
H
m2
m
L/s
m
Re
e
300 300 300 300 350 350 600 600 800 800 950 950 1100 1100 1150 1100 1100 1100 1100 1100
500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500
0.15 0.15 0.15 0.15 0.18 0.18 0.30 0.30 0.40 0.40 0.48 0.48 0.55 0.55 0.58 0.55 0.55 0.55 0.55 0.55 -
1.60 1.60 1.60 1.60 1.70 1.70 2.20 2.20 2.60 2.60 2.90 2.90 3.20 3.20 3.30 3.20 3.20 3.20 3.20 3.20 -
553 553 553 553 553 553 1106 1106 1659 1659 2210 2210 2765 2765 3318 3318 3318 3318 3318 3318
375.0 375.0 375.0 375.0 411.8 411.8 545.5 545.5 615.4 615.4 655.2 655.2 687.5 687.5 697.0 687.5 687.5 687.5 687.5 687.5 -
99,385 99,385 99,385 99,385 92,773 92,773 142,542 142,542 183,031 183,031 221,157 221,157 253,927 253,927 296,744 304,713 304,713 304,713 304,713 304,713 -
0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 -
5 / 13
m/s
3.99 3.99 3.99 3.99 3.39 3.39 3.94 3.94 4.48 4.48 5.08 5.08 5.56 5.56 6.41 6.67 6.67 6.67 6.67 6.67 -
Duct Size (Eq. Round)
Velocity Pr.
mm
Pa
0.420 0.420 0.420 0.420 0.455 0.455 0.598 0.598 0.687 0.687 0.744 0.744 0.795 0.795 0.812 0.795 0.795 0.795 0.795 0.795 -
9.59 9.59 9.59 9.59 6.93 6.93 9.32 9.32 12.08 12.08 15.56 15.56 18.63 18.63 24.75 26.82 26.82 26.82 26.82 26.82 -
#
Fitting loss factor
0.120 0.120 0.100 0.014 0.012 0.013 0.014 0.013 0.120 0.120 0.120
@ Duct Pr. Loss rate
Length L
Pa /m
m
0.47 0.47 0.47 0.47 0.31 0.31 0.28 0.28 0.31 0.31 0.36 0.36 0.39 0.39 0.50 0.54 0.54 0.54 0.54 0.54 -
+
0.50
3.50 3.50 4.00 3.00 3.50 1.00 2.00
1.00
Total Pr. Friction Cummulativ Loss Factor e Pr. Loss Pa
0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 -
1.15 0.23 1.15 0.96 1.09 0.10 0.99 0.11 1.23 0.16 1.07 0.22 1.38 0.24 0.50 3.22 1.09 3.22 3.22 0.54 48.00 -
Pa
107.704 107.936 109.087 110.046 111.132 111.229 112.223 112.335 113.565 113.722 114.789 115.007 116.384 116.626 117.125 120.343 121.433 124.652 127.870 128.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415
MECH. INSTALLATIONS / HVAC / 358489794.xls / AHU-RF-01 WITH SAFETY FACTOR Duct Type Fitting Duct Element / No. Fitting
66 67 68 69 70 71 72
Transition Straight Branch Transition Straight Branch Transition
Enter 1-for Str duct. Enter 2-for Duct fittings.
Duct / Fitting Size (mm)
Perim etre
Air Flow
Hydraulic Dia (Dh)
Reynolds No.
m2
m
L/s
m
Re
e
-
-
-
-
-
*
Enter Pr. loss from manufacturer data for VCD, FD, SA etc.
W
H
@ Roughne Velocity ss factor V
Duct area
Total Air Static (Pa) * Pressure drop based on manufacturer data. # from ASHRAE Fitting loss factors for duct fittings. + Duct length are to fitting centerlines.
m/s
-
Duct Size (Eq. Round)
Velocity Pr.
mm
Pa
-
-
#
Fitting loss factor
@ Duct Pr. Loss rate
Length L
Pa /m
m
-
+
Total Pr. Friction Cummulativ Loss Factor e Pr. Loss Pa
-
Pa
-
176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415 176.415
-
6 / 13
MECH. INSTALLATIONS / HVAC / 358489794.xls / AHU-RF-01 90 DEG BEND
Project
:
Location :
RAK BANK @ DSO Duct Type
Fitting Duct Element / No. Fitting
- Inputs
RAK BANK @DSO
Enter 1-for Str duct. Enter 2-for Duct fittings.
Unit ref : AHU-RF-01
Duct / Fitting Size (mm)
Duct area
Perim etre
Air Flow
Hydraulic Dia (Dh)
Reynolds No.
m2
m
L/s
m
Re
*
Enter Pr. loss from manufacturer data for VCD, FD, SA etc.
W
H
@ Roughne Velocity ss factor V
e
m/s
Date:
Duct Size (Eq. Round)
Velocity Pr.
mm
Pa
#
Fitting loss factor
@ Duct Pr. Loss rate
Length L
+
Pa /m
m
20 June 2017 Total Pr. Friction Cummulativ Loss Factor e Pr. Loss Pa
Pa
SUPPLY SIDE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Sound atten. Straight 90 deg. Elbow Straight 90 deg. Elbow Straight Transition Straight Straight 90 deg. elbow Straight Pleni 90 deg elbow Straight Straight Strainght Straight Straignt Straignht 90 deg Eleb F.D. Straight 90 deg Eleb Straight Straight 90 deg elbow VCD Straight 90 deg Eleb Grilles R VCD
50 1 2 1 2 1 2 1 1 2 1 2 1 1 1 1 1 1 2 2 1 2 1 1 2 2 1 2 4 2
1150 1150 1150 1150 1150 1150 500 500 500 1150 1150 1150 1100 950 800 600 350 350 500 500 500 500 450 300 300 300 300
500 500 500 500 500 500 1150 1150 1150 500 500 500 500 500 500 500 500 500 300 300 300 300 200 200 200 200 200
300
500
0.58 0.58 0.58 0.58 0.58 0.58 0.58 0.58 0.58 0.58 0.58 0.58 0.55 0.48 0.40 0.30 0.18 0.18 0.15 0.15 0.15 0.15 0.09 0.06 0.06 0.06 0.06 0.15
3.30 3.30 3.30 3.30 3.30 3.30 3.30 3.30 3.30 3.30 3.30 3.30 3.20 2.90 2.60 2.20 1.70 1.70 1.60 1.60 1.60 1.60 1.30 1.00 1.00 1.00 1.00 1.60
3868 3868 3868 3868 3868 3868 3868 3868 3868 3868 3868 3868 3223 2578 1933 1289 644 673 673 673 673 673 462 220 220 220 220 608
697.0 697.0 697.0 697.0 697.0 697.0 697.0 697.0 697.0 697.0 697.0 697.0 687.5 655.2 615.4 545.5 411.8 411.8 375.0 375.0 375.0 375.0 276.9 240.0 240.0 240.0 240.0 375.0
345,934 345,934 345,934 345,934 345,934 345,934 345,934 345,934 345,934 345,934 345,934 345,934 295,988 257,983 213,260 166,127 108,039 112,905 120,952 120,952 120,952 120,952 104,662 62,888 62,888 62,888 62,888 109,270
0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090
7 / 13
7.47 7.47 7.47 7.47 7.47 7.47 7.47 7.47 7.47 7.47 7.47 7.47 6.48 5.93 5.22 4.59 3.95 4.13 4.86 4.86 4.86 4.86 5.69 3.95 3.95 3.95 3.95 4.39
0.812 0.812 0.812 0.812 0.812 0.812 0.812 0.812 0.812 0.812 0.812 0.812 0.795 0.744 0.687 0.598 0.455 0.455 0.420 0.420 0.420 0.420 0.321 0.266 0.266 0.266 0.266 0.420
33.64 33.64 33.64 33.64 33.64 33.64 33.64 33.64 33.64 33.64 33.64 33.64 25.31 21.17 16.40 12.67 9.40 10.27 14.20 14.20 14.20 14.20 19.50 9.37 9.37 9.37 9.37 11.59
0.110 0.110 0.080
0.110 0.110
0.100 0.120 0.110
0.110 0.120 0.100 0.120
0.66 0.66 0.66 0.66 0.66 0.66 0.66 0.66 0.66 0.66 0.66 0.66 0.52 0.47 0.40 0.37 0.41 0.44 0.66 0.66 0.66 0.66 1.28 0.80 0.80 0.80 0.80 0.55
2.00 15.00 2.00 3.00 2.00 2.00 1.00 4.50 4.00 4.00 4.00 4.00
2.50 2.50 2.50
7.00
0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02
50.00 1.31 3.70 9.84 3.70 1.31 2.69 1.97 1.31 3.70 1.31 3.70 0.66 2.33 1.87 1.61 1.49 1.63 1.03 1.70 1.65 1.56 1.65 3.19 1.03 1.12 5.57 0.94 4.00 1.39
50.000 51.312 55.012 64.848 68.548 69.860 72.551 74.518 75.829 79.529 80.841 84.541 85.197 87.524 89.397 91.011 92.502 94.128 95.155 96.859 98.507 100.070 101.718 104.911 105.943 107.068 112.642 113.580 117.580 118.971
MECH. INSTALLATIONS / HVAC / 358489794.xls / AHU-RF-01 90 DEG BEND Duct Type Fitting Duct Element / No. Fitting
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66
Straight R FD 90 deg. Elbow Straight Transition Straight Transition Straight Transition Straight Transition Straight Transition Straight 90 deg Elbow Straight Pleni 90 deg elbow R FD Straight R S.A. Branch Straight * VCD SS wire mesh Enlargement * VCD Straight * Mitre Bend * Mitre Bend Straight * Fire Damper Branch Transition Straight Branch Transition
Enter 1-for Str duct. Enter 2-for Duct fittings.
Duct / Fitting Size (mm)
Duct area
Perim etre
Air Flow
Hydraulic Dia (Dh)
Reynolds No.
*
Enter Pr. loss from manufacturer data for VCD, FD, SA etc.
1 2 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 2 1 48
@ Roughne Velocity ss factor V
W
H
m2
m
L/s
m
Re
e
300 300 300 350 350 600 600 800 800 950 950 1100 1100 1150 1100 1100 1100 1100 1100
500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500
0.15 0.15 0.15 0.18 0.18 0.30 0.30 0.40 0.40 0.48 0.48 0.55 0.55 0.58 0.55 0.55 0.55 0.55 0.55 -
1.60 1.60 1.60 1.70 1.70 2.20 2.20 2.60 2.60 2.90 2.90 3.20 3.20 3.30 3.20 3.20 3.20 3.20 3.20 -
608 608 608 553 553 1216 1216 1824 1824 2210 2210 3041 3041 3649 3649 3649 3649 3649 3649
375.0 375.0 375.0 411.8 411.8 545.5 545.5 615.4 615.4 655.2 655.2 687.5 687.5 697.0 687.5 687.5 687.5 687.5 687.5 -
109,270 109,270 109,270 92,773 92,773 156,719 156,719 201,235 201,235 221,157 221,157 279,274 279,274 326,347 335,111 335,111 335,111 335,111 335,111 -
0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 -
8 / 13
m/s
4.39 4.39 4.39 3.39 3.39 4.33 4.33 4.92 4.92 5.08 5.08 6.12 6.12 7.05 7.34 7.34 7.34 7.34 7.34 -
Duct Size (Eq. Round)
Velocity Pr.
mm
Pa
0.420 0.420 0.420 0.455 0.455 0.598 0.598 0.687 0.687 0.744 0.744 0.795 0.795 0.812 0.795 0.795 0.795 0.795 0.795 -
11.59 11.59 11.59 6.93 6.93 11.27 11.27 14.60 14.60 15.56 15.56 22.53 22.53 29.94 32.44 32.44 32.44 32.44 32.44 -
#
Fitting loss factor
0.120 0.100 0.014 0.012 0.013 0.014 0.013 0.110 0.110 0.120
@ Duct Pr. Loss rate
Length L
Pa /m
m
0.55 0.55 0.55 0.31 0.31 0.34 0.34 0.36 0.36 0.36 0.36 0.47 0.47 0.59 0.65 0.65 0.65 0.65 0.65 -
+
0.50
3.50 3.50 4.00 3.00 3.50 1.00 2.00
1.00
Total Pr. Friction Cummulativ Loss Factor e Pr. Loss Pa
0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 -
0.28 1.39 1.16 1.09 0.10 1.18 0.14 1.46 0.19 1.07 0.22 1.63 0.29 0.59 3.57 1.29 3.57 3.89 0.65 48.00 -
Pa
119.246 120.637 121.796 122.883 122.980 124.156 124.291 125.746 125.936 127.004 127.222 128.853 129.146 129.737 133.305 134.597 138.165 142.058 142.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704
MECH. INSTALLATIONS / HVAC / 358489794.xls / AHU-RF-01 90 DEG BEND Duct Type Fitting Duct Element / No. Fitting
67 68 69 70 71 72
Straight Branch Transition Straight Branch Transition
Enter 1-for Str duct. Enter 2-for Duct fittings.
Duct / Fitting Size (mm)
Perim etre
Air Flow
Hydraulic Dia (Dh)
Reynolds No.
m2
m
L/s
m
Re
e
-
-
-
-
-
*
Enter Pr. loss from manufacturer data for VCD, FD, SA etc.
W
H
@ Roughne Velocity ss factor V
Duct area
Total Air Static (Pa) * Pressure drop based on manufacturer data. # from ASHRAE Fitting loss factors for duct fittings. + Duct length are to fitting centerlines.
m/s
-
Duct Size (Eq. Round)
Velocity Pr.
mm
Pa
-
-
#
Fitting loss factor
@ Duct Pr. Loss rate
Length L
Pa /m
m
-
+
Total Pr. Friction Cummulativ Loss Factor e Pr. Loss Pa
-
Pa
-
190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704 190.704
-
9 / 13
MECH. INSTALLATIONS / HVAC / 358489794.xls / AHU-RF-01 WITH PLENIUM
Project
:
Location :
RAK BANK @ DSO Duct Type
Fitting Duct Element / No. Fitting
- Inputs
RAK BANK @DSO
Enter 1-for Str duct. Enter 2-for Duct fittings.
Unit ref : AHU - RF - 01
Duct / Fitting Size (mm)
Duct area
Perim etre
Air Flow
Hydraulic Dia (Dh)
Reynolds No.
m2
m
L/s
m
Re
*
Enter Pr. loss from manufacturer data for VCD, FD, SA etc.
W
H
@ Roughne Velocity ss factor V
e
m/s
Date:
Duct Size (Eq. Round)
Velocity Pr.
mm
Pa
#
Fitting loss factor
@ Duct Pr. Loss rate
Length L
+
Pa /m
m
20 June 2017 Total Pr. Friction Cummulativ Loss Factor e Pr. Loss Pa
Pa
SUPPLY SIDE 1 2 3 4 5 6 7 8 9 10 11
Sound atten. Straight 90 deg. Elbow Straight 90 deg. Elbow Straight Transition Straight Straight 90 deg. Mittere Straight Pleni
50 1 2 1 2 1 2 1 1 2 1
1150 1150 1150 1150 1150 1150 500 500 500 1150
500 500 500 500 500 500 1150 1150 1150 500
0.58 0.58 0.58 0.58 0.58 0.58 0.58 0.58 0.58 0.58
3.30 3.30 3.30 3.30 3.30 3.30 3.30 3.30 3.30 3.30
3868 3868 3868 3868 3868 3868 3868 3868 3868 3868
697.0 697.0 697.0 697.0 697.0 697.0 697.0 697.0 697.0 697.0
345,934 345,934 345,934 345,934 345,934 345,934 345,934 345,934 345,934 345,934
0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090
7.47 7.47 7.47 7.47 7.47 7.47 7.47 7.47 7.47 7.47
0.812 0.812 0.812 0.812 0.812 0.812 0.812 0.812 0.812 0.812
33.64 33.64 33.64 33.64 33.64 33.64 33.64 33.64 33.64 33.64
12
90 deg mittere
2
1150
500
0.58
3.30
3868
697.0
345,934
0.090
7.47
0.812
33.64
13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29
Straight Straight Strainght Straight Straignt Straignht 90 deg Eleb F.D. Straight 90 deg Eleb Straight Straight 90 deg elbow VCD Straight 90 deg Eleb Grilles
1 1 1 1 1 1 2 2 1 2 1 1 2 2 1 2 4
1150 1100 950 800 600 350 350 500 500 500 500 450 300 300 300 300
500 500 500 500 500 500 500 300 300 300 300 200 200 200 200 200
0.58 0.55 0.48 0.40 0.30 0.18 0.18 0.15 0.15 0.15 0.15 0.09 0.06 0.06 0.06 0.06 -
3.30 3.20 2.90 2.60 2.20 1.70 1.70 1.60 1.60 1.60 1.60 1.30 1.00 1.00 1.00 1.00 -
3868 3223 2578 1933 1289 644 673 673 673 673 673 462 220 220 220 220
697.0 687.5 655.2 615.4 545.5 411.8 411.8 375.0 375.0 375.0 375.0 276.9 240.0 240.0 240.0 240.0 -
345,934 295,988 257,983 213,260 166,127 108,039 112,905 120,952 120,952 120,952 120,952 104,662 62,888 62,888 62,888 62,888 -
0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 -
7.47 6.48 5.93 5.22 4.59 3.95 4.13 4.86 4.86 4.86 4.86 5.69 3.95 3.95 3.95 3.95 -
0.812 0.795 0.744 0.687 0.598 0.455 0.455 0.420 0.420 0.420 0.420 0.321 0.266 0.266 0.266 0.266 -
33.64 25.31 21.17 16.40 12.67 9.40 10.27 14.20 14.20 14.20 14.20 19.50 9.37 9.37 9.37 9.37 -
10 / 13
0.110 0.110 0.080
0.120 0.120
0.100 0.120 0.110
0.100 0.120 0.100
0.66 0.66 0.66 0.66 0.66 0.66 0.66 0.66 0.66 0.66
2.00 15.00 2.00 3.00 2.00 2.00
0.66 0.66 0.52 0.47 0.40 0.37 0.41 0.44 0.66 0.66 0.66 0.66 1.28 0.80 0.80 0.80 0.80 -
1.00 4.50 4.00 4.00 4.00 4.00
2.50 2.50 2.50
7.00
0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01
50.00 1.31 3.70 9.84 3.70 1.31 2.69 1.97 1.31 4.04 1.31
50.000 51.312 55.012 64.848 68.548 69.860 72.551 74.518 75.829 79.866 81.177
0.01
4.04
85.214
0.01 0.01 0.01 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 -
0.66 2.33 1.87 1.61 1.49 1.63 1.03 1.70 1.65 1.56 1.65 3.19 0.94 1.12 5.57 0.94 4.00
85.870 88.197 90.070 91.684 93.175 94.801 95.827 97.532 99.180 100.743 102.391 105.584 106.522 107.647 113.221 114.159 118.159
MECH. INSTALLATIONS / HVAC / 358489794.xls / AHU-RF-01 WITH PLENIUM Duct Type Fitting Duct Element / No. Fitting
30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65
R VCD Straight R FD 90 deg. Elbow Straight Transition Straight Transition Straight Transition Straight Transition Straight Transition Straight 90 deg mittere Straight Pleni 90 deg mittere R FD Straight R S.A. Branch Straight * VCD SS wire mesh Enlargement * VCD Straight * Mitre Bend * Mitre Bend Straight * Fire Damper Branch Transition Straight Branch
Enter 1-for Str duct. Enter 2-for Duct fittings.
Duct / Fitting Size (mm)
Duct area
Perim etre
Air Flow
Hydraulic Dia (Dh)
Reynolds No.
*
Enter Pr. loss from manufacturer data for VCD, FD, SA etc.
2 1 2 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 2 1 48
@ Roughne Velocity ss factor V
W
H
m2
m
L/s
m
Re
e
300 300 300 300 350 350 600 600 800 800 950 950 1100 1100 1150 1100 1100 1100 1100 1100
500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500
0.15 0.15 0.15 0.15 0.18 0.18 0.30 0.30 0.40 0.40 0.48 0.48 0.55 0.55 0.58 0.55 0.55 0.55 0.55 0.55 -
1.60 1.60 1.60 1.60 1.70 1.70 2.20 2.20 2.60 2.60 2.90 2.90 3.20 3.20 3.30 3.20 3.20 3.20 3.20 3.20 -
608 608 608 608 553 553 1216 1216 1824 1824 2210 2210 3041 3041 3649 3649 3649 3649 3649 3649
375.0 375.0 375.0 375.0 411.8 411.8 545.5 545.5 615.4 615.4 655.2 655.2 687.5 687.5 697.0 687.5 687.5 687.5 687.5 687.5 -
109,270 109,270 109,270 109,270 92,773 92,773 156,719 156,719 201,235 201,235 221,157 221,157 279,274 279,274 326,347 335,111 335,111 335,111 335,111 335,111 -
0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 -
11 / 13
m/s
4.39 4.39 4.39 4.39 3.39 3.39 4.33 4.33 4.92 4.92 5.08 5.08 6.12 6.12 7.05 7.34 7.34 7.34 7.34 7.34 -
Duct Size (Eq. Round)
Velocity Pr.
mm
Pa
0.420 0.420 0.420 0.420 0.455 0.455 0.598 0.598 0.687 0.687 0.744 0.744 0.795 0.795 0.812 0.795 0.795 0.795 0.795 0.795 -
11.59 11.59 11.59 11.59 6.93 6.93 11.27 11.27 14.60 14.60 15.56 15.56 22.53 22.53 29.94 32.44 32.44 32.44 32.44 32.44 -
#
Fitting loss factor
0.120 0.120 0.100 0.014 0.012 0.013 0.014 0.013 0.120 0.120 0.120
@ Duct Pr. Loss rate
Length L
Pa /m
m
0.55 0.55 0.55 0.55 0.31 0.31 0.34 0.34 0.36 0.36 0.36 0.36 0.47 0.47 0.59 0.65 0.65 0.65 0.65 0.65 -
+
0.50
3.50 3.50 4.00 3.00 3.50 1.00 2.00
1.00
Total Pr. Friction Cummulativ Loss Factor e Pr. Loss Pa
0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 -
1.39 0.28 1.39 1.16 1.09 0.10 1.18 0.14 1.46 0.19 1.07 0.22 1.63 0.29 0.59 3.89 1.29 3.89 3.89 0.65 48.00 -
Pa
119.550 119.825 121.216 122.375 123.462 123.559 124.735 124.870 126.325 126.515 127.583 127.801 129.432 129.725 130.316 134.209 135.500 139.393 143.286 143.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932
MECH. INSTALLATIONS / HVAC / 358489794.xls / AHU-RF-01 WITH PLENIUM Duct Type Fitting Duct Element / No. Fitting
66 67 68 69 70 71 72
Transition Straight Branch Transition Straight Branch Transition
Enter 1-for Str duct. Enter 2-for Duct fittings.
Duct / Fitting Size (mm)
Perim etre
Air Flow
Hydraulic Dia (Dh)
Reynolds No.
m2
m
L/s
m
Re
e
-
-
-
-
-
*
Enter Pr. loss from manufacturer data for VCD, FD, SA etc.
W
H
@ Roughne Velocity ss factor V
Duct area
Total Air Static (Pa) * Pressure drop based on manufacturer data. # from ASHRAE Fitting loss factors for duct fittings. + Duct length are to fitting centerlines.
m/s
-
Duct Size (Eq. Round)
Velocity Pr.
mm
Pa
-
-
#
Fitting loss factor
@ Duct Pr. Loss rate
Length L
Pa /m
m
-
+
Total Pr. Friction Cummulativ Loss Factor e Pr. Loss Pa
-
Pa
-
191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932 191.932
-
12 / 13
STATIC CAL 1.
Total pressure is the sum of static pressure and velocity pressure
Pt =Ps + Pv Pt =total pressure, in. of water Ps = static pressure, in. of water Pv =Velocity Pressure, in. of water =(V / 1097)2 V=Q/A V = fluid mean velocity, fpm Q = airflow rate, cfm A = cross-sectional area of duct, ft2
2.
The Thermal gravity effect for each nonhorizontal duct with a density other than that of ambient air is determined by the following equation:
DR = 0.192(r1- r2)
(z2-z1)
DR = thermal gravity effect, in. of water z1 = elevation from datum in direction of airflow, ft z2 = elevation from datum in direction of airflow, ft
r1 = density of ambient air, lbm /ft3 (0.075 lbm /ft3) r2 = density of air or gas within duct, lbm /ft3 (w.r.t. Temp. of air in duct) Path
(x1 - x 2)
3.
Temp. of Density of Density of air in duct amb. air air in duct
Datum
T
r1
r2 (x1 - x2)
DZ= (z2 - z1)
( oF)
(lbm /ft3)
(lbm /ft3)
ft
To determine the fan total pressure requirement for a system, use this equation
Diff. in Density
Dr=(r1-r2(x1 - x2)) (lbm /ft3)
Pts
Thermal gravity effect DRse=0.192(Dr)(DZ) In. of water
=å DRup + DR dn Pts = fan total pressure, in. of water DR up, dn = Pr. drop across sets of duct sections upstream and downstream of a fan.
4.
To obtain the fan static pressure requirement for fan selection where the fan total pressure is known
Ps
=Pt - Po,v Ps =Fan static pressure requirement, in. of water Pt =fan total pressure, in. of water Po,v =fan outlet velocity pressure, in. of water
5.
Friction loss in duct can be calculated by
DRf = (12 f L r / Dh) (V / 1097)2 DRf f L Dh
=friction losses in terms of total pressure, in. of water =friction factor, dimensionless =duct length, ft =hydraulic diameter, in. =4 A / P A =Duct Area, in2 P =Perimeter of duct cross section, inch V =duct velocity, fpm r = density of air or gas within duct, lbm /ft3 (w.r.t. Temp. of air in duct)
6.
Total pressure loss in duct can be calculated by
DRj =C [ r (V/1097)2] =C Pv C =local loss coefficient, dimensionless r = density of air or gas within duct, lbm /ft3 (w.r.t. Temp. of air in duct) V =duct velocity, fpm
View more...
Comments
