Determination method of basic heating load based on regulation characteristics of nuclear low-temperature heating reactors

Based on the analysis of the seasonal power regulation amplitude of low-temperature heating reactors, the functional relationship between the basic heating load coefficient of low-temperature heating reactors and the power regulation amplitude and the heating load is deduced, and the basic heating load coefficient range of low-temperature heating reactor heating system mainly for heating in severe cold and cold zone in China is proposed. By comparing with the design data of nuclear heating plants with low-temperature heating reactors constructed in Russia (including the Soviet Union), the rationality of the basic heating load coefficient range is verified. When the power regulation range is 10%, the basic heating load coefficient of low-temperature heating reactors mainly used for heating can be taken as 0.30 to 0.45 in severe cold zone and 0.45 to 0.60 in cold zone. Taking a heat supply system equipped with a nuclear heating plant in severe cold zone as an example, the equipment capacity and peak heat source capacity of low-temperature heating reactors are calculated, and some design schemes for improving nuclear energy utilization rate in the non-heating period are analysed.