Design method of ultra (ultra) critical duct type heat exchanger

The invention belongs to the technical field of nuclear power plant heat transfer equipment based on a fourth-generation reactor, and particularly relates to a design method of an ultra (ultra) critical pore-type heat exchanger which mainly comprises a pore-type heat exchanger heat exchange unit, a primary side pore channel and a secondary side pore channel. The duct type heat exchanger heat exchange unit is in the shape of a cylinder, a cuboid, a prism and the like and is made of a high-temperature-resistant and high-pressure-resistant alloy material. Diameters, heights and the like of heat exchange units of the pore-type heat exchanger are comprehensively analyzed and set according to factors such as heat transfer capacity and occupied space. The pore channel type heat exchanger heat exchange unit can be obtained through casting, additive manufacturing and other processes, and the primary side pore channel and the secondary side pore channel can be obtained through drilling, integral forming and other proce