Core electric heating system design method of natural circulation and forced circulation loop system

Abstract

The invention discloses a core electric heating system design method of a natural circulation and forced circulation loop system. The method includes design of a single electric heating element in a core analog, simulation of a box of fuel assembly and structure and assembly of the fuel assembly analog. The method accurately simulates the hydraulic nuclear heat release of the prototype according to the design parameters and functional requirements of the natural circulation and forced circulation experimental loop; the experimental data can reflect the relative characteristics of the prototype reactor, in order to achieve the purpose of research of the prototype hydraulic characteristics. The method employs lowering height simulation to easily implement the experimental device; the physical dimension of the channel is consistent to that of the prototype, so as to reduce the flow distortion; a box of fuel component analog is divided into four zones, which are connected end to end to form a series circuit, so as to increase the resistance, realize current and voltage matching in DC electric heating. The method can improve the safety and reliability of the design of a passive residual heat removal system, and has high value in engineering application.

Description

technical field [0001] The invention belongs to the design field of a pressurized water reactor core simulation body, in particular to a design method for a core electric heating element of a natural circulation and forced circulation loop system. Background technique [0002] The safety and reliability of the passive waste heat removal system design requires corresponding experimental research. For the current power plant reactor, its geometric scale and flow scale are large, and the cost is high. It is impossible to realize the prototype-scale experimental research, and the model needs to be simplified. Whether the model design is reasonable or not determines whether the experimental data can reflect the relevant characteristics of the reactor prototype. Only when the fluid flow in the model correctly simulates the prototype, the experimental data has engineering use value and significance. [0003] The key to designing the core is to realize the hydraulic simulation and ...

AI Technical Summary

Problems solved by technology

[0002] The safety and reliability of the passive waste heat removal system design requires corresponding experimental research. For the current power plant reactor, its geometric scale and flow scale are large, and the cost is high. It is impossible to realize the experimental research of the prototype scale, and the model needs to be simplified.

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