| 摘要 |
PROBLEM TO BE SOLVED: To provide feedwater equipment which prevents excessive addition of chlorine and reliably controls residual chlorine when adding chlorine to water in a water storage tank and has a simple structure. SOLUTION: This feedwater equipment is provided with a water level detector 7 for detecting water level of the water storage tank 1, a chlorine detector 8 for detecting the concentration of residual chlorine and a chlorine injection device 9 for injecting a chemical or water containing chlorine into the water storage tank. Therein, while the water level in the water storage tank 1 is kept within a prescribed water level range, water is fed. When the value of the remaining chlorine of water in the water storage tank 1 is lower than a preset value, the chlorine injection device 9 is actuated, thereby the chemical or water containing chlorine is injected into a feed water pipe 3 and chlorine is added while water is fed. COPYRIGHT: (C)2005,JPO&NCIPI
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