| 摘要 |
<p>PURPOSE:To prevent the corrosion of a cooling pipe made of a copper alloy at a low cost by forming a battery of iron and a material nobler than iron, accelerating the elution of iron ions and passing cooling water in a magnetized state as an electrolyte of the battery. CONSTITUTION:Sea water 7 as the cooling water flows through an inlet pipe 1 into an inlet side water chamber 2 of a heat exchanger 3, flows through the cooling pipe 6 made of the copper alloy, makes a heat exchange during this time and is discharged from a piping 5 through an outlet side water chamber 4. Part of the sea water 7 is lifted by a pump 8 from the mid-way of the inlet pipe 1 and is magnetized by a magnetization device 10; thereafter, the sea water is introduced to an iron ion implantation device 11. Iron plates 16 and copper plates 15 nobler than iron are alternately arranged in the device 11. The opposite plate materials form an electrical circuit by the sea water 7 when the sea water 7 passes the spacings between said plate materials. The iron plates 16 having the low natural potential, therefore, act as sacrificial electrode and elute the iron ions into the sea water. The sea water 7 is passed through a filter 13 and is again injected into the sea water of the inlet pipe 1.</p> |
