According to statistical analysis of international health sector,
when air humidity is lower, incidence rate of diseases, such as
influenza, asthma, allergic dermatitis, and emphysema, is one time
higher than that at normal humidity. If people live in low humidity
environment, their body immunity will drop and they are more
vulnerable to be affected by viruses and bacteria.
According to testing, the boiler steam (also known as primary
steam) contains irritating acid gas that is harmful to human beings
and semiconductor materials. After used in operating theatres,
pharmaceutical production workshops or semiconductor chips plants,
it may cause side effects, so it is not recommended by foreign
Because secondary steam/pure steam humidifier uses the primary
steam as the heat source but clean water as the source of secondary
steam, it does not produce harmful substances and is widely
accepted by foreign operating rooms, pharmaceutical production
workshops and semiconductor production plants!
Secondary steam/pure steam humidifier (STS type) is a new and
sanitary steam humidifier, which takes boiler steam as heat source.
Tap water or purified water will be heated to boil under the action
of heat exchange, which can not produce chemical pollution.
Purified steam will be sent to where needs humidify through AC
air-supply system, which thoroughly resolves the negative impacts,
such as health threat to workers caused by the direct use of boiler
steam humidifying (because the steam produced by steam boiler is
irritative to skin and respiratory tract) and environmental
pollution, and saves energy greatly.
It is ideal for situations where there is a ready supply of steam,
such as hospitals, wards, operating rooms, drug plants,
semiconductor plants, laboratories, luxury places. In these fields,
especially operating rooms, drug plants and semiconductor plants,
direct boiler steam humidifying can cause chemical contamination,
so it does not fit for use.
Clean, sanitary, free from bacteria- no pollution and clean
humidifying up to sanitary requirement
Safe and reliable- use original steam resources as energy to
humidify; need no maintenance; be safe totally
Economical- one-time steam decreases the energy consumption of
Automatic control- water feeding and humidifying is automatically
controlled. Evaporation capacity can be regulated linearly.
STS-N normal pressure type secondary steam humidifier
STS-Y normal pressure type pure steam humidifier
Composition of STS-N Humidifier
Schematic Diagram of STS-N System
Once the primary steam from the boiler is used as energy to
exchange heat with water via heat exchanger, water will be
vaporized into clean secondary steam.
Technical Parameter Table of STS-N Standard Secondary Steam
|Source steam pressure||0.2MPa|
|Pure steam capacity (kg/h)||10||20||40||60||80||100||200||300||400||500|
|Source steam joint||G3/4"||G1"||G11/2"|
|Steam leakage capacity (ml/min)||1‰|
|Condensed water outfall||G3/4"|
Note: Steam outlet size can be increased or decreased as required
and can be changed according to different pipe diameters.
STS-N Electric Control Actuator
LED digital display controller has high-limit humidity alarm
interface and power-off steam auto-close interface.
M1 type: Source steam inlet uses solenoid valve to control switch:
switch-on means power connecting and switch-off means power-off.
M2 type: Source steam inlet uses electric adjustable valve and
motor drive (power: 24V) to open and close valve through motor’s
clockwise and counter-clockwise revolving.
M3 type: Source steam inlet uses electric-orientation adjustable
valve and motor drive (power: