期刊论文

Thermophysical properties of lead-bismuth-based graphene nanofluids

Zhao, P.

中文

核技术

0253-3219

2021

44

12

87-98

10.11889/j.0253-3219.2021.hjs.44.120602

本校为第一机构

高热导率的石墨烯纳米颗粒掺进铅铋堆堆冷却剂中可显著提升其导热系数和比热容,从而提高铅铋堆的堆芯功率密度,降低冷却剂用量,有利于实现反应堆小型化和轻量化设计的目的,对于铅铋堆在偏远地区和远海的工程应用具有重要意义。本文通过不同导热系数、黏度、比热容等预测模型对金属基石墨烯纳米流体热物性进行研究,分析纳米流体强化机理,提出适用于铅铋基石墨烯纳米流体的热物性计算模型。研究结果表明:添加石墨烯纳米颗粒的铅铋基,其导热系数、比热容和黏度均得到显著提高。在保证悬浮液相对稳定的情况下,导热系数、比热容和黏度随浓度的添加显著增大,在浓度达到20%时,纳米基液的热导率可以提高...

Background: The thermal conductivity of graphene nanoparticles doped into the lead bismuth reactor coolant can significantly improve the coefficient of thermal conductivity and specific heat capacity. That will improve the core power of lead and bismuth pile density, reduce the amount of coolant, and ultimately achieve the goal of reducing the reactor volume. It is of great significance for the engineering application of lead bismuth reactor in remote areas and offshore seas. Purpose: This study aims to investigate the thermophysical properties...