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In 1959 NRF was tasked with finding a simple solution in order to keep the engines of river boats, which were cooled with surface water, free of fouling. That is how NRF came up with the box cooler. Due to the success of this product, more and more vessels changed over to this type of cooling.
The box cooler is an efficient cooling system, designed for efficient installation on small and medium sized vessels. It consists of a U-shaped tube bundle that is fitted in the sea chest of the ship. The compact design ensures an efficient and effective form of hear exchange. Box coolers come in different shapes and adaptations to fit any vessel.
The sea chest is provided with inlet and outlet openings (grids) in the hull. The water enters through these grids and is forced through the tube bundle. The cooling effect is obtained by natural and forced circulation of the seawater in the sea chest. The seawater in contact with the tube bundle is warmed up and rises by its lower density, and cool water lowers thus causing a natural upward circulation.
NRF box coolers can be modified to adapt to different space and cooling requirements. Multiple sizes are available upon request. Box coolers have many cooling capabilities. Different types of vessels could benefit from using a box cooler, for example: dredgers, ferries, still standing generators, tugboats, fishing boats, takers, cargo freighters, etc.
You can count on our extensive network of agents to complete a swift maintenance of your NRF box cooler with original parts and the quality that NRF delivers.
We have a wide network of certified suppliers around the globe. This means your box cooler is always close to you.
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