Evaporative Air Washer Evaporative Air Washer Unit — Manufacturer & Supplier, India
Vayuvents manufactures Evaporative Air Washer Units combining evaporative cooling and air washing for textile, pharmaceutical, and industrial humidity management. IS 3588. Mumbai. Call +91 90961 88703.
An Evaporative Air Washer Unit combines the cooling function of an evaporative cooler with the air washing and precise humidity control of a spray-type air washer in a single integrated unit — suitable for applications requiring both evaporative temperature reduction and controlled humidity maintenance.
In textile spinning mills, the evaporative air washer unit is the core of the air conditioning system — supplying humidified, cooled air to the ring frame and weaving shed simultaneously. The combined unit manages both summer cooling (reducing temperature by 8 to 12°C) and humidity control (maintaining 60 to 75% RH) without separate systems.
Vayuvents manufactures evaporative air washer units in SS304 and MS with all water-contact surfaces in corrosion-resistant material. Multi-stage spray nozzle banks, efficient eliminator plates to prevent water carryover, precise make-up water control, and integral sump with recirculating pump are standard features.
Available from 1,500 m³/hr to 20,000 m³/hr. Chilled water pre-cooling coil option for applications requiring temperature below wet-bulb depression limit of plain evaporative cooling.
Key Features & Benefits
8 to 15°C Cooling Effect
Evaporative cooling drops air temperature 8 to 15°C below outdoor ambient in Indian summer at 30 to 40% relative humidity — the range covering most of North and Central India during May to July.
90% Lower Running Cost
Evaporative cooler power consumption is 0.18 to 2.2 kW — compared to 2 to 10 kW for refrigerated air conditioning of the same space. Saves 80 to 90% on cooling electricity cost.
No Refrigerant — Eco-Friendly
No HFC refrigerant, no compressor — just water evaporation. Zero global warming potential. No refrigerant handling licence required for maintenance.
Fresh Air Continuous Ventilation
Evaporative cooler continuously introduces fresh outdoor air — not recirculated air like air conditioning. Better indoor air quality with continuous fresh air supply.
Ideal for Open / Semi-Open Spaces
Evaporative cooling works in well-ventilated factories, warehouses, and semi-open spaces where windows and doors are open — unlike refrigerated AC that requires a sealed space.
Simple Maintenance
Cellulose pad cleaning every 3 months, water tank cleaning monthly, motor service annually — no compressor, no refrigerant, no complex maintenance.
Reduces Dust and PM in Air
Water mist from the evaporative pads settles fine dust particles and reduces PM levels in the cooled air — useful in dusty factory environments.
IS 3588 Compliant Fan
Axial fan performance per IS 3588. System designed and tested for Indian ambient temperature and humidity conditions.
Technical Specifications
| Parameter | Specification |
|---|---|
| Airflow Capacity | 1,500 to 25,000 m³/hr |
| Motor Power | 0.18 to 2.2 kW |
| Cooling Pads | 100 mm / 150 mm thick cellulose honeycomb |
| Cooling Effect | 8 to 15°C below ambient (30-40% RH conditions) |
| Water Consumption | 45 to 750 litres/hr (evaporation + bleed-off) |
| Water Tank Capacity | 60 to 500 litres |
| Body Material | Galvanised steel / PP / SS304 |
| Pad Material | Cellulose honeycomb (Munters Celdek / equivalent) |
| Power Supply | 230V Single-Phase / 415V 3-Phase |
| Standards | IS 3588 | IS 4894 |
Airflow Performance — Model Range
| Sr. | Model | Airflow (m³/hr) | Motor (kW) | Water Flow (LPH) | Cooling Pads (mm) | Area Coverage (sq m) |
|---|---|---|---|---|---|---|
| 1 | EAC-1500 | 1,500 | 0.18 | 45 | 600×600 | 15–20 |
| 2 | EAC-3000 | 3,000 | 0.37 | 90 | 900×900 | 30–40 |
| 3 | EAC-5000 | 5,000 | 0.55 | 150 | 1200×900 | 50–70 |
| 4 | EAC-8000 | 8,000 | 0.75 | 240 | 1200×1200 | 80–100 |
| 5 | EAC-12000 | 12,000 | 1.10 | 360 | 1500×1500 | 120–150 |
| 6 | EAC-18000 | 18,000 | 1.50 | 540 | 1800×1800 | 180–220 |
| 7 | EAC-25000 | 25,000 | 2.20 | 750 | 2000×2000 | 250–300 |
- Cooling effect 8 to 15°C below ambient in Indian summer at 30 to 40% RH.
- Coverage area based on 4 to 6 air changes per hour in 3.5m ceiling height space.
- Custom sizes and industrial configurations available on request.
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Where It Is Used
- Factory and workshop cooling — large industrial building worker comfort in summer
- Warehouse cooling — logistic and distribution centre temperature management
- Greenhouse pad-and-fan cooling — commercial floriculture and vegetable growing
- Poultry house cooling — broiler and layer house summer heat stress reduction
- Textile mill humidification — spinning, weaving, and finishing humidity control
- Sports halls and gymnasiums — large volume open building cooling
- Construction site canteen and welfare facilities — temporary worker cooling
- Agricultural produce storage — fruit, vegetable, and grain storage temperature management
- Automotive showrooms — large open showroom cooling without ductwork
- Commercial office buildings — supplementary cooling for open-plan offices in dry climate
- School and hospital corridors — fresh air supply and cooling in semi-open areas
- Outdoor event venues — marquee and temporary structure cooling
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FAQs — Evaporative Air Washer Evaporative Air Washer Unit
An evaporative air cooler draws hot, dry outdoor air through water-saturated cellulose cooling pads. As the hot air passes through the wet pads, water evaporates — absorbing heat from the air and reducing its temperature by 8 to 15°C. The cooled, humidified air is then blown into the building or space. The process is purely physical — no refrigerant, no compressor, just the natural cooling effect of water evaporation.
In North Indian summer conditions (40 to 45°C ambient, 25 to 35% relative humidity), an evaporative cooler reduces air temperature by 12 to 15°C. In coastal Maharashtra, Karnataka, and coastal South India (32 to 38°C ambient, 50 to 70% relative humidity), the cooling effect is 5 to 8°C — less effective because higher humidity limits further evaporation. Evaporative cooling is most effective in dry climate regions of India.
Yes. Industrial evaporative coolers are ideal for factories, warehouses, and large semi-open spaces where sealed air conditioning is impractical. They require cross-ventilation — hot air must be able to escape from the opposite side of the building as the cooler introduces cooled fresh air. Roof ventilators or exhaust fans on the opposite wall provide this exhaust path. Vayuvents supplies both evaporative coolers and complementary roof exhaust fans for complete industrial cooling systems.
Water consumption is approximately 30 litres per hour per 1,000 m³/hr of airflow — a 12,000 m³/hr industrial evaporative cooler consumes approximately 360 litres of water per hour during operation. This is much less than the water used in cooling towers for refrigerated systems of equivalent capacity. A standard water supply at 2 to 3 bar pressure is sufficient — no special water treatment is required for cellulose pad coolers on municipal water supply.
An air washer and an evaporative cooler use the same basic principle — water evaporation to cool and humidify air — but are designed differently. An air washer is typically a larger industrial unit designed for precise humidity control in textile mills and similar applications, using water spray nozzles and eliminator plates. An evaporative cooler uses cellulose honeycomb pads for more compact, energy-efficient cooling in factories, warehouses, and large buildings. Vayuvents manufactures both types.
Yes. Pad-and-fan evaporative cooling is the most widely used greenhouse cooling system for commercial floriculture and vegetable growing in India. Vayuvents supplies matched exhaust fans (creating negative pressure to draw air through the pads) and cellulose cooling pads for greenhouse pad-and-fan cooling systems — as a complement to the greenhouse exhaust fans in the Vayuvents range.
Contact Vayuvents at enquiry@vayuvents.com or call +91 90961 88703. Share the building area in sq m, ceiling height, outdoor summer temperature and humidity at your location, and whether the space has good cross-ventilation. We will recommend the correct model count and layout and provide a commercial proposal within 24 hours.