| 摘要 |
PURPOSE:To enable to prevent the breeding of shellfishes in a water circulating tube by a method wherein a bypass valve for bypassing a retrieving device is provided in the way of the water circulating tube and a circulating pump is operated continuously. CONSTITUTION:Upon cleaning the fine pipes 5 of a condensing tube 1, the bypass valve 14 is closed, an inlet valve 12 as well as an outlet valve 13 for the retrieving device and a switching valve 11 are opened and the circulating pump 8 is operated, then, sponge balls B, stocked in the retrieving device 9 are flowed into the water circulating tube 4 and circulated through a closed circuit consisting of a sea-water inlet tube 2, the fine pipes 5, a sea-water outlet tube 8, a collector 7 and the retrieving device 9. Accordingly, the circulating pump 8 may be operated continuously and sea-water having a constant flowing speed is flowed through the circulating tube 4 at all times, therefore, the breeding of the shellfishes in the water circulating tube 4 may be prevented. |
