Air Washer Test Rig Manufacturer,Supplier and Exporter in India
Product Code : EL-RACLE-9360
Jlab Export is a leading Air Washer Test Rig Manufacturer,and suppliers in India
An air washer treats air by passing it through water sprays. Chilled spray water cools and dries the air, while heated spray water warms it and adds moisture. This rig has a blower, an AC duct built to handle water spray, spray jets and an eliminator of coir or fillets. A 500 W immersion heater, a directly cooled evaporator and a 10 litre SS 304 tank complete the water side.
Specifications
| Eliminator | Coir or fillets |
| Pumps | Hot and cold water pump |
| Immersion heater | 500 W |
| Air supply | Blower and motor |
| Spray | Spray jets with heater arrangement |
| Evaporator | Directly cooled, 3/8 in dia |
| Duct | AC duct for water spray |
| Water tank | SS 304, 10 litre capacity |
| Use | Humidifying or dehumidifying air to comfort conditions |
| Minimum order quantity | 1 unit |
| Dispatch time | Usually 14–18 working days |
| Manufacturer | JLab (Jain Laboratory Instruments Pvt Ltd), Ambala, India |
Psychrometric Experiments with the Air Washer
Students run three processes and plot each one on the psychrometric chart. First the spray water is recirculated, neither heated nor chilled. The air then cools at nearly constant wet bulb temperature, so its dry bulb falls and its relative humidity rises. With water chilled below the dew point of the entering air, vapour condenses into the spray and the air leaves cooler and drier. With the heater on, warm spray water heats the air and humidifies it.
At each test point, the dry and wet bulb temperatures before and after the sprays come from a Psychrometer. The air velocity in the duct comes from a Probe Type Anemometer Digital. From these readings students work out the humidifying efficiency and the moisture added or removed per kg of dry air.
Frequently Asked Questions
What does the eliminator do?
It catches the water droplets carried along by the air leaving the spray section, so only air moves on down the duct. The coir or fillets give a large wet surface that the droplets strike and drain from.
How is the humidifying efficiency worked out?
With recirculated water the air cools along its wet bulb line. The efficiency is the fall in dry bulb temperature divided by the difference between the entering dry bulb and wet bulb temperatures. A perfect washer would bring the air down to its wet bulb temperature.
When does the air washer dry the air instead of wetting it?
When the spray water is colder than the dew point of the entering air. Water vapour then condenses into the spray, and the humidity ratio of the air falls. The directly cooled evaporator gives the cooling for this test.
What is the immersion heater used for?
The 500 W immersion heater warms the spray water for the heating and humidifying test. Water warmer than the air raises both its dry bulb temperature and its moisture content, the treatment used for winter air conditioning.
How does an air washer differ from a cooling coil?
An air washer treats the air by direct contact with water, so it can add moisture as well as remove it, and it also washes out dust. A cooling coil only takes out heat and, below the dew point, moisture.
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Last updated: 5 November 2026
