CACW Coolers:-
Efficient Thermal Management for Rotating Machines & Industrial Systems
At Bansal Laboratories & Equipments Pvt. Ltd., we specialize in designing and manufacturing CACW Coolers, a critical component for closed-loop cooling of electrical motors, generators, transformers, and other rotating equipment.
Our CACW coolers are engineered for maximum thermal performance, mechanical integrity, and ease of maintenance, ensuring reliable operation even in demanding industrial environments
What is a CACW Cooler?
CACW stands for Closed Air Circuit Water Cooler. It is a finned-tube type heat exchanger that transfers heat from hot air (circulating within an enclosure, like a motor stator) to an external water circuit, without mixing the two media. It maintains temperature limits and protects equipment from overheating.
Key Features:-
- Thermal Design Validated with internationally accepted software and performance curves
- Crimped Root Soldered Finned Tubes for high thermal conductivity and bonding reliability
- High Cooling Efficiency with air-to-water transfer coefficients up to 5078 W/m²°C
- Compact Footprint with customized layouts and face dimensions
- Multiple tube passes (e.g., 2-pass systems) for enhanced water-side efficiency
- Hydrostatic & Fin Bonding Testing as per industry standards
- Designed for low air and water pressure drops (e.g., 15 mm WG, 0.05 kg/cm²)
Construction & Manufacturing:-
- Finned Tube Material: Copper, Aluminum, SS admirably brass, carbon steel and cupro nickel
- Housing: Fabricated from carbon steel / stainless steel, corrosion protected
- Assembly includes:
- Precision-machined tube sheets
- Expanded and bonded fin tubes
- Painted water boxes and casing for long service life
- Manufacturing per documented QAP & process plans, including:
- Tube expansion with mock-up qualification
- Fin bonding pull-out tests
- Hydrostatic pressure testing
- Air leak and flow tests
- Dimensional and visual inspections
Applications:-
- Large Motors and Generators (Stator Cooling)
- Hydro and Thermal Power Stations
- Industrial Drives and Compressors
- Refineries and Cement Plants
- Transformers and Enclosures with Air Circulation
Quality & Testing:-
- Hydro Testing @ design pressure
- Fin Bonding (Pull-Out) Test
- Tube Expansion Validation with Go/No-Go gauges
- Painting DFT & Shade check (RAL 7032/7035)
- Dimensional and visual inspection per final drawing
- Customer inspection and documentation (Test Certificates, QAP, etc.)
Why Choose Us?
- ISO-standard engineering, design, and QA/QC
- In-house testing facility and mock-up capability
- Proven performance record from field feedback
- On-time delivery with robust packaging
- Custom-built solutions for OEMs and end users
