marine vapor scrubber

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The first "industrial" seawater evaporators were called steam scrubbers. They were fitted on seagoing vessels for the purpose of providing freshwater onboard, the heating source being the heat given off by the diesel engine(s), and the cooling source, seawater itself. As there was plenty of energy available, consumption optimisation did not constitute a priority and it is not unheard of to come across steam scrubbers that consume 700 kWh·m–3 of evaporated water. With the view to limiting scaling and to extend equipment service life, steam scrubbers operating in a vacuum rapidly became available for the purpose of lowering the evaporation temperature (between 60 and 70 °C).

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