PURPOSE: To permit long-term continuous operation of a cooling sea water system by impressing very high frequency high-voltage pulses to the sea water passing the inlet part and inside of the cooling sea water system to exterminate or paralyze the larva of the sticking marine living matter in the sea water.
CONSTITUTION: The cooling sea water system for a power plant is constituted of, for example, a sea water intake port 1, an intake path 2, a circulation pump 3, an intake side pipeline 4, a condenser 5, a cooling water cooler 6, a release side pipeline 7, a release side water channel 8, etc. Devices 10, 20 for impressing the very high frequency high-voltage pulses are respectively provided to, for example, the inlets of the sea water intake port 1 and the intake side pipeline 4 in this case. The larva of the sticking marine living matter in the sea water flowing into the system from the intake port 1 as shown by an arrow A is exterminated or paralyzed in the stage of passing the devices 10, 20. The sticking and growing of the marine living matter into the wall surfaces of the intake path 2 and the intake pipeline 4 are thereby prevented. As a result, there are no problems in environmental protection and the smaller energy consumption is required. The long-term continuous operation of the cooling sea water system is made possible.
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UEDA RYOHEI
MATSUMOTO YOICHI
MINAMIYAMA KOICHI
SEIRYO ENG