Two fluid ultrasonic spray humidification system

High pressure micro mist humidification system

Project/Category

Two fluid ultrasonic spray humidification system

High pressure micro mist humidification system

Humidification principle

Water mist humidification (isoenthalpy humidification)

Water mist humidification (isoenthalpy humidification)

Working principle

The compressed air passes through the Venturi tube, vertically impacts the water flow, atomizes the water into small droplets, and passes through the spray outlet at a super high speed close to the sound speed

Once again, the ultrasonic resonance amplifier placed at the front end of the nozzle is hit in a straight line, resulting in ultrasonic resonance phenomenon

To achieve secondary atomization, thereby achieving the purpose of cooling and humidification

The water is pressurized to around 5MPa by a high-pressure pump, and then sprayed out through a specially designed nozzle

Produce atomized water droplets of about 20 microns and mix them with air

By exchanging heat and humidity, the purpose of humidification is achieved

Spray particle size

Compressed air and water are mixed and atomized, resulting in a small particle size (mostly 5-10 microns)

Visible to the naked eye (video attached)

Relying solely on water pressure atomization, the particle size is relatively large (mostly around 20 microns)

Visible to the naked eye (video attached)

Humidification efficiency

High, around 75%

Higher, around 60%

Air enthalpy

Absorption distance

Sufficient air enthalpy is required

Sufficient absorption distance is required

Sufficient air enthalpy is required

Sufficient absorption distance is required

Water quality requirements

Pure water (deionized water), if the on-site environment allows the use of ionized water

Municipal tap water with a filtration level of 5 microns or above can also be used

Using pure water (deionized water), the equipment is almost maintenance free

Pure water (deionized water) must be used

The nozzle aperture is only about 0.1-0.3mm, and water supply containing ions is prone to clogging the nozzle due to scaling

Using water pressure

The required pressure for use is greater than 3 Bar, and the higher the water pressure, the better

The higher the water pressure, the more atomized the water

The higher the water pressure, the smaller the unit air consumption required for atomization per unit water volume

2-6Bar

Motor

No need

Need

Compressed air

Need

No need

Control method

Proportional control or On off control

Because the system mainly consists of proportional water control valves, on-off air valves

Consisting of a water vapor valve group with a fixed pressure difference function and an adjustable ultrasonic atomization nozzle

By controlling the water flow rate and controlling the pressure difference between water flow and air, direct proportional control is performed

Not only does it ensure proportional control and atomization quality, but it also truly saves compressed air, achieving the goal of energy conservation

Control, or several sets of on off controls (segmented proportional control)

Divide the number of nozzles into several groups, each controlled by a solenoid valve with a switching value

Open the corresponding number of solenoid valves according to the size of the signal to achieve segmented proportional control

Main components

Proportional control box, water gas valve group with fixed pressure difference function, adjustable ultrasonic atomization nozzle with backwash function, etc

Electric motor, high-pressure plunger pump, high-pressure solenoid valve, frequency converter, water tank, pressure sensor, micro mist nozzle, etc

Reliability

Stability

Only medium pressure compressed air (with a pressure of 4 bar) and low pressure water supply (with a pressure greater than 3 bar) are required

The nozzle has a diameter of 2.5-3.0mm, assisted by compressed air for atomization, and has a backwash function, making it less prone to blockage

Due to the use of water pressure of around 50 kilograms, the nozzle consumption rate is high

The nozzle aperture is 0.1-0.3mm, which is prone to blockage

Construction and installation

Adopting a quick connector connection, the installation is simple, convenient, and fast

Small size, can be hung on the cabinet board or wall, saving installation space

Due to high water pressure and high requirements for pipelines during installation

The volume is bulky and cannot be hung, requiring large installation space

If used in conjunction with ceiling air conditioning in the ceiling mezzanine, a dedicated operating platform needs to be created

Maintenance, consumables

Meets usage conditions with almost no maintenance required

Regular oil and nozzle replacement, inspection, and cleaning maintenance are required

Lifespan

Long (4-6 years), no consumables

The nozzle needs to be replaced; It is necessary to change the oil frequently. Failure to do so in a timely manner may damage the high-pressure plunger pump

Warranty

Provide a two-year warranty

Provide a one-year warranty

Usage cost
(Operating costs)

Requires consumption of medium pressure compressed air
The prerequisite for using it is to have excess medium pressure compressed air on site& Nbsp

Due to the relatively low humidifying efficiency, there is a significant waste of water resources< Br/> The oil and nozzle need to be replaced

Suggested selection

There is sufficient medium pressure compressed air on site, and it is recommended to use it

There is a high demand for humidification (over 200kg/h), and there is no compressed air on site. It is recommended to use it