Ask The HvacMan
Air Grilles
Air Diffusers
Air Quailty
All Air Systems
All Water Systems
Building .Managament Systems ..BMS
Cooling Towers
Cooling Load Calculation
Energy Saving
Duct ,Smacna
Dampers ,Air
Dust Collection
Fire Dampers
Glass Selection
Heat Exchangers,water
Heat Recovery
Heat Tracing Systems
Hepa Filters
Hvac Applications
Humidifiers / Dehumidifiers
Insulation , Duct
Insulation , Pipe
Insulation , Sound
Nano Tech.,In Building
Occupancy Sensors
Pneumatic Conveying
Pool Ventilation
Process Piping
Radiant Heating
Refrigerant Systems
Solar Collectors
Steam Generation
Tables & Charts Gnr.
VAV Sytems
VRV Systems
Solar Collectors
Flat Plate Collectors
Evacuated Tube Collectors
Concentrating Collectors
Transpired Collectors
Solar Control Systems
Standalone Systems
Grid Connected Systems
Hybrid Systems
Back-up Systems
Solar Cells
Solar Arrays
Change Controller
Hybrid Systems
Grid Systems
Water Pumping
Using Wind Energy
Enviromental Aspects
Buyer's Guide
Save Energy
Solar Water Heating
Solar Electric Systems
Wind Turbines
Passive Solar Heating
Passive Solar Cooling
Building Material
Water Conservation
Ground Source Heat-Pumps
Green Hotels

Glass &Windows Selection

humidifiers add moisture to warm, circulated air in order to protect furnishings and reduce static electricity. They use deionized, demineralized, softened, or untreated water. There are several basic types of industrial humidifiers. Conventional steam humidifiers use an electrical or gas-fired heater to boil water and release steam into the air. Direct or live steam humidifiers inject steam directly into an air handling system or ductwork. By contrast, liquid-to-steam systems transfer energy from a hot liquid, usually water, through a heat exchanger inside a water-filled chamber. Steam-to-steam systems that use a heat exchanger inside a water-filled chamber are also available. Unlike other types of industrial humidifiers, ultrasonic devices vibrate a piezoelectric transducer at a very high frequency to create tiny water droplets instead of steam. In some systems, specialized nozzles are used to discharge a mist of atomized water and compressed air.

Specifications for industrial humidifiers include primary voltage, power demand, output capacity, steam pressure, rated input, and control tolerance. For non-ultrasonic systems, the primary voltage is the voltage supplied to the heater or heat exchanger. Power demand, the rated power of the humidifier, is typically expressed in kilowatts (kW). Output capacity is the amount of steam or vapor that industrial humidifiers can generate in a fixed amount of time. Steam pressure is the pressure supplied for both direct duct injection and indirect heating. Measured in British thermal units (BTUs), rated input applies only to systems that use gas-fired heaters. For all types of industrial humidifiers, control tolerance is the percentage of control around a given set point. For example, if a system is set to 60% humidification, then a control tolerance of 5% allows for positive adjustments to 65% and negative adjustments to 55%.

Industrial humidifiers vary in terms of features and mounting styles. Some devices include built-in diagnostics, an integral control panel, or remote communications. Others are self-contained and include water demineralization or cleaning features. Modular systems can be linked together in order to increase output capacity. Industrial humidifiers with temperature sensors and proportional controls are also available. In terms of mounting styles, industrial humidifiers can be mounted on ceilings or walls, or in air handling systems. Free standing and portable devices are commonly available. Remote systems use steam piped in from another location.

Industrial humidifiers are used in the heating, ventilation and air conditioning (HVAC) systems of office buildings, and in a variety of commercial and industrial applications. For example, printing plants use industrial humidifiers to reduce static electricity in the ink wells of large, high-speed web presses. Plastic manufacturers also use industrial humidifiers, but to reduce the buildup of dust on rollers and machinery. Industrial humidifiers are used widely in computer rooms, laboratories, and semiconductor manufacturing facilities.





  Discuss on the Message Board
Cooling Coils
Heating Coils
Energy Saving
Selection Software


Industry links
Legionnare Disease
Energy Saving
Control Software
Hotel Design Books

Hotel Design