CAJ | 학술논문

以某N-38000型双压凝汽器为研究对象，针对凝汽器低压侧和高压侧分别计算了在不同蒸汽负荷、冷却水入口温度以及单、双循环水泵运行时凝汽器的变工况特性.在此基础上运用等效热降法，综合考虑水资源的价格因素，计算了机组不同负荷下单、双循环水泵切换的最佳循环水入口温度.研究结果表明：当机组40％负荷运行时，单循环水泵运行较经济；机组负荷分别在60％、80％、100％负荷运行时单、双循环水泵切换的最佳循环水入口温度分别为25．1、22．3、17．6℃.
이모N-38000형쌍압응기기위연구대상，침대응기기저압측화고압측분별계산료재불동증기부하、냉각수입구온도이급단、쌍순배수빙운행시응기기적변공황특성.재차기출상운용등효열강법，종합고필수자원적개격인소，계산료궤조불동부하하단、쌍순배수빙절환적최가순배수입구온도.연구결과표명：당궤조40％부하운행시，단순배수빙운행교경제；궤조부하분별재60％、80％、100％부하운행시단、쌍순배수빙절환적최가순배수입구온도분별위25．1、22．3、17．6℃.
The variable working conditions for both high and low pressure sides of an N-38000 type dual-pressure condenser was calculated,when this condenser was in single and dual water circulat-ing pump operation,at different steam loads and cooling water inlet temperatures.On this basis, the equivalent heat drop method was applied to calculate the optimal inlet temperature of circulat-ing water for suitching the single and dual circulating water pump,at different unit loads.The re-sults show that,with the unit load of 40%,running single circulating water pump is more eco-nomical,while when the unit load is 60%,80% and 100%,the optimal inlet temperature of circu-lating water is 25.1 ℃,22.3 ℃ and 17.6 ℃,respectively.