www.neptronic.com
Direct Steam Injection Humidifier
Installation Instructions and User Manual
Page | 1
Technical Specifications
Product Description
The SKD Direct Steam Injection Humidifier maintains the desired humidity set point by using raw steam
from a steam boiler as a source of humidity. The SKD's unique engineering ensures the following:
There is no undesired energy consumption when there is no humidity demand
There will be no water drop ejection on cold start-up
The humidifier always functions properly by constantly monitoring the temperature
The SKD is controlled by a specially designed Electronic Steam Controller (ESC) that monitors and
controls the demand and steam temperature. The controller takes care of the humidifier's controlling,
isolating, and steam control valve operations. This is done using temperature sensors’ readings and the
special steam control valve opening sequence. The ESC also simplifies the diagnostics process and is a
plug and play configuration for direct steam humidification.
The SKD Direct Steam Injection Humidifier comes in three configurations - the SKD Single Tube, the SKD
Multi Tubes, and the SKD MiniRack. The choice of the configuration is driven by the combination of the
humidifier capacity and the required maximum absorption distance. The design can be selected using the
Humidisoft software.
The Direct Steam Injection Humidifier combines certain unique features, making it one of the most
efficient humidifiers. The following are the features of Direct Steam Injection Humidifier :
Steam Jacketed Distributor
. The stainless steel jacketed manifold allows pressurized steam
to circulate around the inner distribution tube, heating the surface and reducing condensation.
Separator
. The stainless steel construction of the separator is a proven internal configuration,
which limits the drop in pressure while providing efficient steam-condensate separation and
also supplying hot and dry steam to the control valve.
Control and Isolating Valves
. Normally, closed globe valve with equal percentage flow
characteristics control the flow of steam. Bronze body and brass trim (stainless steel trim
optional). The linear electric actuator, is equipped with a heat shield.
Electronic Steam Controller (ESC)
. The Direct Steam Injection Humidifier comes with a
microprocessor based ESC, with backlit LCD display that allows programming of the humidity
set points, and monitoring parameters such as actual humidity, air flow switch, interlock, and
temperature sensors.
Strainer
. The strainer strains foreign matter from pipelines, and provides protection to the
components of the steam humidifier.
Temperature Sensor
. RTD temperature sensor integrated in a brass thermowell.
Float and Thermostatic Steam Trap
. Float and thermostat design with universal four port
design, all stainless steel internal components.
Steam Header.
A steam header is supplied on multiple tube configurations for an even
distribution of steam into the airstream.
