Calculating Humidity Load - GeneralAire 5500 Manuel D'installation Et D'utilisation

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Installations that require constant operation at full capacity

will reduce cylinder life. The water level in the cylinder is, on

average, much higher and the electrodes become completely

insulated more quickly. The importance of providing adequate

humidifier capacity should not be underestimated.

Maximum Production

Another factor affecting cylinder life is the maximum

production setting. A higher production rate will result in a

shorter cylinder life (See Fig. 1.c.).

Structures Under Construction

In high-end construction projects, humidification is often

required while the structure is being finished. Humidification

is necessary to protect and stabilize wood floors, trim and

decoration. Humidification load, however, in an unfinished

structure may be five to eight times higher than when finished.

5500 Steam humidifiers may be operated while construction

is underway, but reduced cylinder life is to be expected. Good

practice dictates that the steam cylinder also be replaced

once the project is completed.

Cylinder

life

100%

Output

Fig. 1.c

1.3

Steps to Estimate Humidity Load

Humidity Load Calculation (GPD)

_________________________

Pounds of Moisture / Hour / Cubic Foot*

Temp

68°F/20°C

70°F/21°C

72°F/22°C

* Based on .5 air charges per hour

Tab. 1.b

Example:

• 2,500 SF house with 1,000 SF basement (3,500 SF total

• 9 ft. ceilings

• 70°F and 40% RH

• 2 fireplaces

Humidity Load = 3,500 x 9 x .00020 x 1.05 x 1.05 X 2.88 = 20

gpd

20%

For more accurate results based on U.S. geographic region, see

the GeneralAire® online humidity calculator at https://www.

generalfilters.com/support/humidity-calculator.html.