Stulz ULTRASONIC - Page 12

ULTRASONIC
12
Copyright STULZ GmbH 02/1997
CAPACITY CALCULATION FOR ULTRASONIC HUMIDIFIERS
6. Determine the net cross section and the air speed in the duct or air
treatment unit
>Determine the free cross section for the air treatment unit from
manufacturers' information.
For the calcualtion example: Height: 1100 mm
Depth: 1300 mm
Height x deptch = 1.1 m x 1.3 m = 1.43 m² cross section
>Determine the reduction of the free cross section caused by the
humidfiers
Example:
1,43 m² - (3 x 0,137) = 1,02 m²
= free cross section under
consideration of the three
humidifiers ENS 14
>Determine the air speed
Air volume (m³/h) / 3600 = m³/s
m³/s
free cross section (m²)
Example:
10.000 m³/h
3.600
2,78 m³/s
1,02 m²
The calculated air speed of 2,73 m/s is within the permissible
limits of 1,5 - 3 m/s.
Type
ENS 1200
ENS 2400
ENS 3600
ENS 4800
ENS 6000
ENS 7200
ENS 8400
ENS 9600
ENS 14
ENS 18
C.Sectiont
0,035 m²
0,053 m²
0,072 m²
0,091 m²
0,11 m²
0,129 m²
0,148 m²
0,166 m²
0,137 m²
0,166 m²
= m/s
= 2,78 m³/s
= 2,73 m/s