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P a g e 2 8 • D R I - S T E E M D e s i g n G u i d e

D R I - S T E E M D e s i g n G u i d e • P a g e 2 9

Table 28-1:

Air duct pressure losses for all ULTRA-SORB panels and for RAPID-SORB, Multiple-Tube, and Single-Tube evaporative

dispersion units

Duct air velocity

Tube centers or duct height with Single-Tube (without airow stabilizer panel)

Add to pressure values if

ULTRA-SORB has an airow

stabilizer panel

3" 76 mm 6" 152 mm

9” and

greater

229 mm and

greater

fpm m/s wc Pa wc Pa wc Pa wc Pa

250 1.3 0.010 2.5 0.005 1.2

There is no

measurable

air pressure

loss for

these tube

spacings.

0 0

500 2.5 0.020 5.0 0.010 2.5 0.010 2.5

750 3.8 0.045 11.2 0.015 3.7 0.040 10.0

1000 5.1 0.080 20.0 0.025 6.2 0.090 22.0

1250 6.4 0.120 29.9 0.035 8.7 0.150 37.0

1500 7.6 0.170 42.0 0.050 12.4 0.210 52.0

1750 8.9 0.230 57.0 0.070 17.4 0.270 67.0

2000 10.2 0.300 75.0 0.090 22.0 0.330 82.0

2250 11.4 0.380 95.0 0.110 27.0 0.420 105.0

2500 12.7 0.470 117.0 0.140 35.0 0.500 124.0

2750 14.0 0.570 142.0 0.170 42.0 0.620 154.0

3000 15.2 0.680 169.0 0.200 50.0 0.740 184.0

R e f e r e n c e t a b l e s f o r c a l c u l a t i n g l o a d :

A i r d u c t p r e s s u r e l o s s

Air duct pressure loss in wc and Pa

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 83 84

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DriSteem Vaporstream Especificaciones Pagina 32