Marine Diesel Engine – Cooling with Sea Water Marine diesel engines produce a lot of waste heat when being operated. On a vessels the cooling of the engines is done, either indirect where the engine is cooling with a closed loop and the closed loop is cooled via a heat exchanger. Or as in this case direct with sea water. Seawater not only contain salt and limescale, but also marine growth of all kind. All these can settle in the cooling loop, often in great quantities. As a result the cooling performance decreases. Therefore the engines can’t run on full speed to avoid overheating. To reduce the risk chemical cleaning is done regularly. Merus Ring achieved good results in many different diesel engines on ships as well as oil platforms. Where sea water is used directly to cool down machines

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