PROBLEM TO BE SOLVED: To adjust a discharge quantity of a sea water pump according to a load of cooled equipment and to reduce power of the sea water pump.SOLUTION: According to a cooling system for central fresh water of a marine vessel, a discharge quantity of a sea water pump 5 is controlled by control means 11 so that a temperature difference between a temperature of fresh water after heat exchanging thereof with sea water by a heat exchanger 2 and a temperature of taken-in sea water becomes a set temperature difference. Herein, when load of cooled equipment 1 becomes lower than a set maximum load (for example, 100%), the temperature of fresh water becomes lower than the temperature of fresh water when the cooled equipment 1 has the set maximum load, and a temperature difference between the temperature of fresh water and the temperature of sea water becomes smaller than the set temperature difference. Consequently, a discharge quantity of the sea water pump 5 is controlled so that the temperature of fresh water rises and the temperature difference becomes the set temperature difference, and the discharge quantity of the sea water pump 5 can be lowered than a set maximum discharge quantity (for example, 100%).SELECTED DRAWING: Figure 1
【課題】被冷却機器の負荷に応じて海水ポンプの吐出量を調整し、海水ポンプ動力を低減する。【解決手段】本発明の船舶のセントラル清水冷却システムによれば、熱交換器2による海水との熱交換後の清水温度と、取り込んだ海水温度との温度差が設定温度差となるように、海水ポンプ5の吐出量が制御手段11により制御される。ここで、被冷却機器1の負荷が設定最大負荷(例えば100%)より低減すると、清水温度は、被冷却機器1が設定最大負荷の際の清水温度より下がり、清水温度と海水温度との温度差が設定温度差より小さくなる。すると、清水温度を上げ温度差が設定温度差となるように海水ポンプ5の吐出量が制御され、海水ポンプ5の吐出量を設定最大吐出量(例えば100%)より下げることができる。【選択図】図1
COOLING SYSTEM FOR CENTRAL FRESH WATER OF MARINE VESSEL
船舶のセントラル清水冷却システム
2018-03-08
Patent
Electronic Resource
Japanese
IPC: | B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / F01P Kühlung von Kraft- und Arbeitsmaschinen oder Kraftmaschinen allgemein , COOLING OF MACHINES OR ENGINES IN GENERAL / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / B63J Hilfsanlagen auf Schiffen , AUXILIARIES ON VESSELS |
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