根据原则性热力系统的计算方法,分析中国改进型三环路压水堆(CPR1000)核电厂二次侧热力系统的热经济性。以岭澳核电站二期为例,对蒸汽发生器排污水的热量回收方案进行计算分析。结果表明,如果用4#低压加热器回收排污热量,则会使得机组的热经济性提高0.088%。 According to the calculation method of the principle thermodynamic system, the thermal economy of the secondary heat system of the CPR1000 nuclear power plant in China is analyzed. Taking the second phase of Ling Ao Nuclear Power Station as an example, the heat recovery scheme of steam generator effluent water is calculated and analyzed. The results show that if using 4 # low pressure heater to recover blowdown heat, it will make the unit thermal economy increased by 0.088%.