INDUSTRIAL HUMIDITY CONTROL
Industrial humidity control
Precision humidity transforms product quality
In industrial processes handling hygroscopic materials — textiles, timber, paper, tobacco — relative humidity is not simply a comfort parameter: it is a critical process variable. Fluctuations of ±5% RH cause dimensional changes, loss of mechanical strength, build-up of static electricity and quality deterioration that translate into rejects, machine downtime and measurable economic losses.
- RH accuracy± 2 %
- Operating pressure70 – 100 bar
- Droplet size< 10 µm
- Eco-sustainableLow consumption
- Energy use vs. steam−93 % energy
- ControlT/RH probes
The high-pressure adiabatic misting system generates ultrafine aerosols that evaporate instantly in the ambient air without settling on materials, bringing relative humidity precisely to the set-point of ±2% RH, thereby compensating for seasonal variations in outside air.
SET-POINT BY SECTOR
Every material, its own humidity
Textile industry
55 – 70% RH
- •−60% yarn breakages
- •−85% electrostatic discharge
- •+8% tensile strength
- •Fewer rejects and loom stoppages
Woodworking
50 – 65% RH
- •Dimensional stability
- •−90% warping and cracking
- •Better surface quality
- •EN 14298 compliance
Paper mills and printing
45 – 65% RH
- •No more cockling
- •Precise print registration
- •−70% breaks in the press
- •Stable colour quality
Tobacco
60 – 75% RH
- •−75% leaf breakage
- •Aromatic oils preserved
- •Optimal cutting yield
- •CORESTA compliance
IN DEPTH
Why humidity is a process variable
Scientific note
Note 1 — Wood
EMC = f (RH, T)
The equilibrium moisture content (EMC) of wood is a direct function of RH and temperature. Variations of ±5% RH produce transverse dimensional changes of 0.15–0.30% per RH unit. Below RH 35%, wood becomes brittle and prone to irreversible cracking.
Scientific note
Note 2 — Textiles
Below RH 40%, the surface resistivity of fibres exceeds 10¹² Ω/sq, making it impossible to dissipate electrostatic charges. The result: yarn breakages, dust attraction and fire risk in environments with fibre dust. Above RH 55%, it falls to 10⁸–10⁹ Ω/sq.
Scientific note
Note 3 — Paper
Paper undergoes dimensional changes proportional to variations in RH. A fluctuation of ±10% RH causes length changes of 0.12%, enough to compromise multicolour print registration. Curl also appears with local humidity gradients.
KEY ADVANTAGES
Why choose it
Lower energy consumption
0.05 kWh per kg of water evaporated (pumping only) against 0.7–0.8 kWh/kg for steam. Return on investment in 12–18 months.
It never wets
Sub-10 µm droplets evaporate before touching surfaces, materials or machinery: zero risk of moisture damage to products or plant.
Fewer rejects and stoppages
Stabilising humidity reduces yarn breakages, paper cockling, wood cracking and tobacco weight loss by up to 75%.
±2% RH accuracy
Probes and automatic regulation hold the set-point, compensating for seasonal variations in outside air.
Electrostatic control
Above 55% RH, electrostatic charges dissipate naturally: less dust attraction and lower fire risk.
Non-invasive installation
Custom layout on existing plant, with no structural changes and minimal production downtime.
TYPICAL APPLICATIONS
Weaving
Spinning mills
Sawmills
Paper mills
Offset printing
Tobacco
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