Moisture Transfer Model and Simulation for Dehumidification of HTGR Core

Abstract EN

A large number of carbon materials are adopted in high-temperature gas-cooled reactor (HTGR).

These carbon materials mainly include graphite IG-110 and boron-containing carbon material (BC), both of which are typical porous materials and normally absorb moisture.

In order to inhibit the chemical corrosion reaction between core internals materials and moisture, the core needs to be strictly dehumidified before the reactor is put into operation.

This paper mainly analyzed the moisture transfer mechanism in these carbon materials.

Moisture transfer models were developed, and the dehumidification process of HTR-PM core was simulated.

In addition, the influence of working temperature and system pressure on dehumidification was studied as well.