R.W. Fernstrum Equipment Showcase
Angled Tube GRIDCOOLER® Keel Cooler
Side-mounted keel cooler with angled tubes that harness natural convection for zero-knot and stationary duty — generators at the dock, buoys and pump stations.
Description
The Angled Tube GRIDCOOLER® Keel Cooler is optimised for side-mounted, zero-knot or stationary applications, where there is no hull speed to push seawater across the cooler. Its tubes are positioned and angled to exploit the natural convection current created by the warm cooler, maximising the flow of raw water between the tubes.
Features
- Angled 90/10 copper-nickel tube arrangement that enhances natural convection
- Resists silt and debris build-up on the unit
- One-piece brazed headers, 56% silver braze, ultrasonic inspection of critical joints
- Closed circuit — no seawater pumps or strainers to maintain
- Custom sized to heat load and site conditions
Typical applications
Generator sets and auxiliary equipment running alongside the dock, dredges and barges at anchor, buoys, wave and tidal generators, pump stations and other stationary or slow-speed heat sources. When recessing the unit into the side of the hull for dockside gensets, the top of the recess box should be angled to let the convection current escape.
Specifications
| Type | Keel cooler (external, closed-circuit hull cooler) |
|---|---|
| Mounting | Externally on the hull below the waterline: recessed, external (faired) or side mounted |
| Max test pressure | 35 psi (2.41 bar) |
| Manufactured in | Menominee, Michigan, USA |
| Quality | ISO 9001:2015 (ABS QE Certificate 60149); Buy America compliant |
| Material | 90/10 copper-nickel |
| Design | Angled tube, side mounted |
| Duty | Zero-knot / stationary (natural convection) |
| Joints | 56% silver braze |
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