Fernstrum Gridcoolers

Traditionally in the construction of box coolers, steel, brass or bronze materials have been used. The new Fernstrum box cooler construction uses the same materials as our GRIDCOOLERS®, 90-10 copper-nickel. The tube used is our "D" series tubing or a small diameter round tube. Approximate size of the units is the same as that of our GRIDCOOLERS sized for a 1/2 mph flow, except for the fact that the tubes are mounted differently.

Installation

When installing box coolers, use the following guidelines:
1. The interior Sea chest walls and cover plate should be at least as thick as the hull plating.
2. There should be a gap at least 6" between the box coolers and the sea chest walls.
3. The sea chest openings in the hull must cover at least 50% of the hull/sea chest area.
4. The box coolers must be mounted parallel to the hull for the greatest efficiency.

5. Use angle iron as thick as the hull plating to construct the lip that the cover plate attaches to.
- Installation Example-

The following example is for a dredge using box coolers for its generator and propulsion systems.
The installation drawing below is for the generator's box coolers.

- Propulsion Engine-

- Generator Engine-

Rating: 1970KW/1000rpm Rating: 1970KW/1000rpm

Temp into Cooler: 147"F Temp into Cooler: 147"F

Temp out of Cooler: 121.95"F Temp out of Cooler: 121.95"F

Sea Water Temp: 85"F Sea Water Temp: 85"F

Box Cooler

Box Cooler

Model: D11x10x54-5P-G Model: 2/D11x11x54-11P-G in parallel

Element Element

Height: 32.5" Height: 41.5"

Width: 14" Width: 14"

Length: 71" Length: 71"

Overall Dimensions Sea Chest Overall Dimensions Sea Chest

Height: 44.75" Height: 53.75"

Width: 26" minimum Width: 46" minimum (52" shown)

Length: 83" Length: 83"

Approx. Weight: 990 Ibs Approx. Weight/Element: 11601bs

Total Approx. Weight: 2320 Ibs

Quality Marine Products Distributor

Quality Marine Products
Distributor