A lead-supercritical carbon dioxide intermediate heat exchanger

Abstract

The present disclosure discloses a lead-supercritical carbon dioxide intermediate heat exchanger, including four modular printed circuit board heat exchangers (modular PCHEs), a cylinder, vertical partition boards, horizontal partition boards and heat exchange fluid channels. S-CO2 fluid flows upward along microchannels in PCHE cold side heat exchange plates after reaching the bottom of the cylinder along a square central down tube formed by the four PCHEs to absorb heat from hot side heat exchange plates. S-CO2 leaves the intermediate heat exchanger upward after being collected by a current collector at the other end of each PCHE. Liquid lead enters microchannels in the PCHE hot side heat exchange plates from a duct at the upper end of the cylinder to transfer heat to S-CO2 on the other side, and then flows out of the intermediate heat exchanger from a duct at the lower end of the cylinder to complete heat exchange.

Description

technical field [0001] The invention belongs to the fourth generation of advanced nuclear power technology, in particular to a supercritical carbon dioxide (S-CO2) applied to lead-based reactors 2 ) lead-supercritical carbon dioxide intermediate heat exchanger for cycle power generation system. Background technique [0002] my country's primary energy consumption is mainly based on coal, and the massive consumption of fossil energy has caused serious environmental pollution, which has made my country face the challenges of deterioration of the ecological environment and exhaustion of energy resources. In order to solve energy and environmental problems, the government has made a decision to efficiently develop nuclear power technology and accelerate the construction of nuclear power projects under the premise of safety. In order to improve the economy, safety and fuel cycle utilization rate of nuclear power, and to more thoroughly solve the problems of nuclear waste disposa...

AI Technical Summary

Problems solved by technology

High-efficiency and compact lead / S-CO 2 The intermediate heat exchanger technology is an effective way to improve the fuel utilization, compactness and economy of the lead-based reactor power generation system. However, the lead / S-CO 2 The design method of the intermediate heat exchanger is still immature, and due to the S-CO 2 The cycle operates under high temperature and high pressure conditions, making the traditional shell-and-tube lead / S-CO 2 The intermediate heat exchanger has disadvantages such as low design efficiency and large space size

Images