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Calculation method of humidification amount

2017-05-17
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Air humidity is ubiquitous, especially in the industrial field. Each industry has its own unique production requirements for indoor humidity. Therefore, various types of humidification equipment are used in textiles, papermaking, computer rooms, electronics, spraying, plastics, gunpowder, printing, tobacco, HVAC , Fresh storage, food, artificial landscape, planting, aquaculture, laboratory and other industries have been widely used. Current applications * are mature * for a wide range of humidifiers are wet film humidifiers and ultrasonic humidifiers.

How do users choose a configuration when configuring a humidifier? This mainly depends on how large the humid load is in the humidification place, which is the amount of humidification we often say. This article mainly introduces the calculation method of the humidification amount. The user can apply this method to calculate the humidification amount required by himself according to his actual situation, and purchase the humidifier model from the determined.

Calculation formula:

H = volume × ρ × temperature coefficient × (X2-X1) ÷ 1000 × ventilation times × loss coefficient

Explanation:

H——Desired humidification (kg / h)

ρ——Air density (kg / m3) = 1.2

V——Volume (area of humidified area × height)

1000——g is converted to Kg

Loss factor-1.2, including factors such as space personnel, environmental containment and materials

Number of ventilations-usually 2-3

Temperature number system-1.2, increase in winter, decrease by 1.2 in summer

X2- X1——water per cubic meter, X2 is after humidification, X1 is before humidification

Example 1: The volume of space is 20000m2 × 2m high, the ambient temperature is 20 ℃, the relative humidity is 70%, and how much humidification is required to increase to 90% kg / h

We first calculate X2 = 15.60135 g / m3 x1 = 12.113438 g / m3

Then plug in the above formula to calculate the required humidification amount:

H = 20000 × 2 × 1.2 × 1.2 × (15.60135-12.13438) ÷ 1000 × 3 × 1.2 = 718.91 kg / h

Example 2: The space volume is 400 m2, the height is 2 meters, the ambient temperature is 20 ° C, and the relative humidity is required to rise from 70% to 90%.

We first calculate X2 = 15.60135 g / m3 x1 = 12.113438 g / m3

Then plug in the above formula to calculate the required humidification amount:

H = 400 × 2 × 1.2 × 1.2 × (15.60135-12.13438) ÷ 1000 × 3 × 1.2 = 14.38 kg / h

Then we can choose an ultrasonic humidifier with a humidification capacity of 12kg / h. If a humidifier is used, two 12kg / h machines should be configured because the humidification time of the wet film humidifier is long and the loss is large.



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