| 摘要 |
PURPOSE:To retrieve the heat of condensed water, which is carried away excessively by cooling water, and contrive energy saving by utilizing the heat by a method wherein a cooling water circulating pump for regulating the amount of cooling water for a condenser in a thermal power plant is provided to control the amount of cooling water by detecting the condensed water temperature at the outlet of the condenser. CONSTITUTION:The cooling water, discharged by the circulating pump 36 equipped with a cooling water amount regulator, is sent into the condenser 1 from a cooling water inlet pipe 5 and is discharged to a discharging path 10 through a cooling water chamber communicating pipe 7, the condenser 1 and a cooling water outlet pipe 8. On the other hand, the condensed water temperature at the outlet port of the condenser 1 is detected by a condensed water temperature detector 37 and the signal thereof is transmitted to a condensed water temperature regulator 38, the supplying amount of cooling water of the circulating pump 36 is regulated by the signal of the regulator 38 and the condensed water temperature at the outlet of the condenser 1 is controlled at a set temperature. Thus, the condensed water is sent into a low-pressure feed water heater 13 and an deaerator 15 and is heated by steam to a specified temperature to operate the plant under keeping the condensed water temperature at the outlet port of the condenser in constant. Accordingly, heating steam in condensed water system may be saved, fuel consumption in a boiler may be reduced and energy saving may be achieved. |
