Marine Heat Exchangers

Three methods are utilized for cooling water-cooled marine petrol and diesel engines: Direct cooling, heat exchanger cooling, and keel cooling. Direct cooling, involving the direct contact of seawater with the cylinders and heads, is deemed inadequate due to the risk of the engine running at excessively low temperatures, originally designed for radiator cooling, which could ultimately lead to the deterioration of the cylinder block and heads. Heat exchanger cooling represents the predominant approach, wherein seawater is separated into components capable of withstanding its corrosive effects. This method employs a closed fresh-water circuit that can be regulated by a thermostat to ensure the engine operates at its intended temperature. Keel cooling is an option suitable for small boats navigating in shallow, weed-filled waters, albeit constrained by the necessity for external pipework, which limits its practicality. 
           Bowman header tank heat exchangers serve to prevent aeration of the engine water circuit, while Bowman gearbox oil and engine oil coolers are positioned on the suction side of the seawater pump. Furthermore, Bowman heat exchangers and exhaust manifolds are situated on the discharge side of the engine. Known for their commitment to quality and reliability, all Bowman Heat Exchangers incorporate high-quality materials and the latest technical advancements, establishing a global reputation for excellence.