Hull resistance reduction system and hull resistance reduction method

• Main Authors: SHIRAISHI KEIICHI, ZAITSU AKIRA
• Format: Patent
• Language: English
• Published: 01.07.2015
• Subjects: AUXILIARIES ON VESSELS; BLASTING; COMBUSTION ENGINES; ENGINE PLANTS IN GENERAL; EQUIPMENT FOR SHIPPING; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; HEATING; HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINEPLANTS; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MACHINES OR ENGINES IN GENERAL; MARINE PROPULSION OR STEERING; MECHANICAL ENGINEERING; NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; RELATED EQUIPMENT; SHIPS OR OTHER WATERBORNE VESSELS; STEAM ENGINES; TRANSPORTING; USE OF WASTE HEAT OF COMBUSTION ENGINES; WEAPONS

A hull resistance reduction system and a hull resistance reduction method are provided. The hull resistance reduction system is characterized in that: the hull resistance reduction system is provided with: a main engine (1), an exhaust turbine compression mechanism (20) actuated by some of the exhaust gas led from the main engine (1), and a discharge nozzle (24) for leading compressed air led from the exhaust turbine compression mechanism (20) to a submerged hull outer surface of the ship; and the exhaust turbine compression mechanism (20) is provided with an exhaust turbine (20b) rotatably driven by the led exhaust gas, a compressor (20a) that uses the rotational drive force of the exhaust turbine (20b) to compress air, and an electric power generator (21) that generates power by means of the exhaust turbine (20b) and heats the compressor (20a).