Industrial Evaporative Air Cooler Cuts Heat Stress and Lifts Productivity in a Metal Fabrication Plant
Client: A medium-sized metal fabrication workshop in Southeast Asia
Industry: Metal processing and welding
Solution: Industrial evaporative air coolers with ducted spot cooling
Results: 7°C temperature drop, 15% productivity increase, ultra-low energy consumption
The Challenge
A tropical metal fabrication plant faced extreme indoor heat during the dry season. Workshop temperatures regularly exceeded 38°C, causing worker fatigue, poor concentration, and rising absenteeism. Traditional air conditioning was impractical due to the large open bay, high ceilings, and constant heat from welding and cutting equipment. The client needed an energy-efficient cooling solution that could cover both general workshop areas and fixed workstations without high electricity bills.
Our Solution
As an industrial environment improvement provider, Shanghai Huaqin Industrial recommended a combination of industrial evaporative air coolers with flexible air delivery. We installed three 1.1 kW units strategically across the workshop:
- Whole-room cooling for the general assembly area using wide-angle air distribution.
- Localized spot cooling through 30-meter fabric ducts directed at welding stations and inspection benches.
- Ducted point cooling for high-heat workstations where continuous airflow was critical.
The selected coolers featured 5090 high-efficiency evaporation pads with an evaporation rate above 90%, and precision-engineered PP housing that reduced air leakage by 10–20%. This delivered an additional 1–2°C temperature drop and improved overall system efficiency.
Technical Highlights
- Ultra-high energy efficiency: Each 1.1 kW unit delivers 24.822 kW of cooling capacity — equivalent to a 10 HP conventional air conditioner — with an EER of 21.75 kW/kW.
- Durable motor: Full-closed pure copper motor with IP55 protection, F-class insulation, and stepless frequency conversion (220V/380V).
- Air quality improvement: The evaporation media removes over 90% of PM10 and more than 40% of PM2.5.
- Weather-resistant body: Anti-UV, anti-aging PP modified engineering material ensures long service life.
Common Questions from the Client
Q: How much will this cost to run compared to air conditioning?
A: Total power draw for all three coolers was just 3.3 kW — a fraction of what traditional HVAC would consume. The client saw an immediate reduction in monthly electricity bills.
Q: Can the coolers target specific workstations rather than the whole factory?
A: Yes. We used fabric ducts and adjustable nozzles to direct cool air exactly where welders and inspectors work. This spot cooling approach maximizes comfort without wasting energy on empty areas.
Q: Is maintenance difficult?
A: No. The evaporation pads are easily accessible for cleaning, and the motor requires minimal attention. Our team also provided a simple weekly inspection checklist.
Results Achieved
Within 48 hours, the client recorded a 7°C reduction in workshop temperature during peak afternoon hours. Worker feedback was immediately positive: heat-related discomfort dropped sharply, and productivity in the welding section increased by an estimated 15% within the first month.
The combination of general ventilation and targeted spot cooling also reduced airborne dust and fume stagnation. Welders reported fewer complaints about eye and throat irritation, and residual fumes dissipated more effectively.
Why This Matters for Factory Managers
This case shows how a properly designed evaporative cooling solution delivers significant temperature reduction, better air quality, and measurable productivity gains — without the high energy costs of conventional HVAC. For any factory facing heat stress challenges, industrial evaporative air coolers offer a practical, scalable, and cost-effective path to a safer workplace.
Conclusion
At Shanghai Huaqin Industrial, we engineer complete environment improvement strategies that address occupational health, operational efficiency, and human-centric management. This project turned a sweltering workshop into a productive, worker-friendly space.
To learn more about our industrial evaporative air coolers and integrated cooling solutions, visit www.huaqinindustrial.com or contact our engineering team today.
