描述了核供热堆主换热器的研究和发展现状。在大庆200MW核供热堆主换热器的基础上,把连续翅片加装在传热管束的外侧,大大提高了传热系数,从而设计了一种紧凑高效的主换热器,改善了核供热堆的经济性 The research and development status of the main heat exchanger of nuclear heating reactor are described. On the basis of the main heat exchanger of Daqing 200 MW nuclear reactor, the continuous fins are installed on the outside of the heat transfer pipe bundle, which greatly improves the heat transfer coefficient, so that a compact and efficient main heat exchanger is designed and improved Nuclear heating reactor economy