一、引言目前世界上所用燃料主要是天然气和石油等化石燃料。随着能源需求的增长,人类将面临石化燃料资源短缺的困难,因此广泛开发新能源是一个重要课题,而核能的利用是一个比较现实和经济的途径。高温气冷反应堆是目前大型动力反应堆中的一种安全堆型。其冷却剂出口温度高于其他类型的反应堆,可提供干净安全的高温热源。我国已开展了高温气冷堆技术 I. INTRODUCTION At present, the fuels used in the world are mainly fossil fuels such as natural gas and petroleum. With the increase of energy demand, human beings will face the shortage of petrochemical fuel resources. Therefore, the extensive development of new energy sources is an important issue, and the utilization of nuclear energy is a realistic and economical way. High-temperature gas-cooled reactor is a safe reactor in the current large-scale reactor. Its coolant outlet temperature is higher than other types of reactors, providing a clean, safe, high temperature heat source. China has launched a high-temperature gas-cooled reactor technology