インバ-タによる漁船の冷却海水ポンプの省電力対策

概要

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Experiments on twe variable discharge systems of cooling sea water pump for main engine and for generator engines were conducted to evaluate the effects of electric power saving. One was a combination of a general purpose inverter, an automatic controller and a pair of temperature sensors, and maintained the required temperature difference of cooling sea water between inlet and outlet of main engine. The other was a combination of the inverter, the controller and a pressure sensor, and maintained the required delivery pressure within cooling sea water pump for generator engines.<BR>The results showed that it was possible to control the discharge of these pumps, so that the temperature difference amd delivery pressure were kept constant all the time. These systems could save the electric power consumption. In the case of the cooling sea water pump for main engine, the cost of equipment could be offset from the saving of the running cost in approximately 2 years, also the cooling sea water pump for generator engine, 0.6 years. These were suitable for small-powered pump unit (5.5-7.5 kW ) on fishing vessels, these methods also could be widely introduced to fishery machines.
公益社団法人日本マリンエンジニアリング学会の論文