AHU Static Pressure Calc
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Transcript of AHU Static Pressure Calc
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Meinhardt Philippines Inc.
Calculation/Sketch
CV2 FACILITIES UPGRADE MP306Project Project No. Sheet of 1
Designed by ND Date 25 SEPTEMBER 2004 Circ: FN/OR/AGR/ND
TOTAL AIR FRICTION
E B Br R EQUIV. EQUIV. ELOCITY ROP/100 FT
W H DIA. M FT. FT. FT. FT. FT. LGTH. (FT.) LGTH. (FT.) fpm IN W.G.
AC SUPPLY DUCT
1 28,000 800 800 874.5 2.0 6.6 5.0 5.0 11.6 4195 0.48
2 28,000 1500 1500 1640 1.5 4.9 0.0 4.9 1193 0.02
3 28,000 2000 600 1147 49.4 162.1 75.0 75.0 237.1 2437 0.13
4 22,400 1800 600 1096 5.0 16.4 30.0 5.0 35.0 51.4 2137 0.11
5 16,800 1400 600 980.3 5.0 16.4 30.0 5.0 35.0 51.4 2003 0.11
6 11,200 1000 600 840 5.0 16.4 30.0 5.0 35.0 51.4 1819 0.11
7 5,600 600 600 655.9 5.0 16.4 30.0 5.0 35.0 51.4 1492 0.10
8 3,360 500 500 546.6 3.0 9.8 15.0 30.0 45.0 54.8 1289 0.10
9 2,240 500 350 455.5 5.5 18.0 15.0 5.0 20.0 38.0 1237 0.12
10 1,120 350 300 354 5.5 18.0 15.0 5.0 20.0 38.0 1024 0.11
11 1,120 350 300 354 2.0 6.6 30.0 30.0 36.6 1024 0.11
12 1,120 350 300 354 2.0 6.6 0.0 6.6 1024 0.25
AC SUPPLY DUCTS & FITTINGS
AC RETURN DUCT
12 5,000 760 500 670.2 4.0 13.1 15.0 30.0 45.0 58.1 1276 0.08
13 5,000 760 500 670.2 5.0 16.4 15.0 5.0 20.0 36.4 1276 0.08
14 10,000 1100 600 878.1 5.0 16.4 15.0 5.0 20.0 36.4 1486 0.07
15 15,000 1500 600 1011 20.5 67.3 60.0 60.0 127.3 1681 0.08
AC RETURN DUCTS & FITTINGS
Abbreviations: AC SUPPLY DUCTS & FITTINGS
E = Elbow Equivalenght Length 15 Ft. VOLUME DAMPER ( x 3 )
B = Branch Equivalenght Length 30 Ft. BACKDRAFT DAMPER
Br = Branch Run Equivalenght Length 15 Ft. FIRE DAMPER
R = Reducer Equivalenght Length 5 Ft. SUPPLY AIR DIFFUSER
AC RETURN DUCTS & FITTINGS
VOLUME DAMPER ( x 2 )
FIRE DAMPER
RETURN AIR GRILLE
SUB-TOTAL
ADD 5%
TOTAL FRICTION DROP IN WG
SECTION CFM
DUCT FITTINGS
SIZE (MM) LENGTH
25th Flr., Chath116 Valero cor.Salcedo Village,1227 PhilippinesTel. (632) 887-1Fax (632) 887-1E-mail mpi@me
S:\MPI\MP408\2 AHUS-2\178420635.xls.ms_office\ND
Date: 25 September 2004
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FRICTION
DROP
IN W.G.
0.056
0.001
0.304
0.055
0.056
0.057
0.053
0.055
0.044
0.042
0.041
0.016
0.779
0.044
0.028
0.026
0.097
0.195
0.779
0.375
0.400
0.200
0.150
0.195
0.250
0.200
0.150
2.700
0.135
2.835
am HouseHerrera Sts., Makati City
391172inhardt.com.ph
S:\MPI\MP408\2 AHUS-2\178420635.xls.ms_office\ND
Date: 25 September 2004
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S:\MPI\MP408\2 AHUS-2\178420635.xls.ms_office\ND
Date: 25 September 2004
