... of the main or auxiliary engines or turbines, Lubrication oil cooling, Recooling of circulated water for cooling cylinders, ... , Cooling of Baoder oil, compressor oil and other lubricants, Preheating of lubrication oil and heavy fuel oil, Preheating of seawater for ... air-condition the passengers’ cabins and freight spacesOthers: turbine oil cooler, Chemical industry, district heating, district cooling, ...