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Cleanroom HVAC and Air Handling Equipment
Clean Steam Exchange Humidifier
A steam-to-steam humidification package that uses plant steam as the heat source while generating separate atmospheric steam from treated water for cleanroom air systems.
- Separated Plant-Steam Circuit
- 316 Stainless Heat Exchanger
- Modulating Clean-Steam Output
- Sanitary Drainable Construction
Product Introduction
The clean steam exchange humidifier transfers heat from pressurized facility steam through a stainless heat exchanger into potable, reverse-osmosis or deionized make-up water. Boiler additives remain isolated from the atmospheric steam delivered to the air-handling system. A drainable vessel, modulating steam valve, level control and stainless dispersion assembly create a serviceable package for processes that require controlled humidity without introducing boiler-treatment carryover.
Key Features
The 316 stainless heat exchanger provides a durable corrosion-resistant heat-transfer surface, while the vessel and remaining packaged components use stainless-steel construction suited to their service.
Modulating steam admission follows the humidity signal without cycling electric heating elements.
Accessible vessel connections, removable separator components and automatic drain functions simplify scale removal and sanitation routines.
Customer Product Concerns
Critical facilities often have abundant plant steam but cannot permit boiler-treatment chemicals or entrained condensate to enter the cleanroom supply air.
Facility steam contains treatment chemicals that are unsuitable for direct dispersion into occupied clean areas.The steam-to-steam heat exchanger boils a separate treated-water circuit, so plant steam and generated humidification steam never mix.
Mineral deposits can accumulate on heat-transfer surfaces and reduce output over time.RO or DI make-up water, automatic drain cycles and an accessible stainless vessel reduce deposit loading and support routine cleaning.
A wide humidity load range can cause wet duct surfaces when steam output changes too abruptly.A modulating control valve meters heat input while a correctly sized dispersion manifold promotes rapid absorption across the duct.
Maintenance access is difficult when the humidifier is buried inside an air-handling section.The freestanding skid locates the vessel, valve train, strainer and drains at floor level while only the dispersion assembly occupies the duct.
Typical Applications
Sterile pharmaceutical manufacturing suitesBiotechnology cleanroom air-handling systemsMedical-device assembly environmentsHospital sterile processing ventilationElectronics facilities requiring low-particulate humidification
Technical Parameters
Typical construction ranges for a packaged steam-exchange humidifier serving cleanroom air systems are shown below.
| Core Material | 316 stainless steel heat exchanger with a stainless-steel vessel, separator and packaged piping |
|---|---|
| Panel Thickness | 1.5-3.0 mm stainless vessel shell and fabricated support thickness |
| Effective Width | 700-1600 mm typical skid width according to steam capacity |
| Maximum Length | Up to 1500 mm overall cabinet/skid length for the largest listed packaged capacity |
| Steel Facing Thickness | 1.2-2.0 mm stainless guard, drip tray or optional enclosure sheet |
| Core Density | Approximately 7900-8000 kg/m³ for austenitic stainless wetted components |
| Thermal Conductivity | Approximately 14-16 W/(m·K) for the 316 stainless heat exchanger at room temperature |
| Surface Finish | Pickled and passivated stainless steel with smooth drainable wetted surfaces |
| Joint Type | Sanitary clamp or flanged steam connections with welded stainless piping and gasketed vessel closures |
| Customization | Available based on the intended application and operating environment. |
Available Options
Potable-water, RO-water or DI-water configurationSingle-tube or multi-tube steam dispersion lance, available up to 3000 mm to suit duct widthStainless weather enclosure for protected outdoor installationModbus or BACnet interface with remote output and alarm signals
Planning a Clean Steam Exchange Humidifier specification?
Send us your dimensions, installation conditions, performance targets and required surface finish.
