基于Comsol的超声波强化传热特性数值模拟研究  

Numerical simulation of ultrasonic enhanced heat transfer characteristics based on Comsol

作　　者：钮家乐 王桂卿 丁艳[1] 尹千羽 李茂豪 邓祥 金奂旭 夭梦桐 NIU Jia-le;WANG Gui-qing;DING Yan;YIN Qian-yu;LI Mao-hao;DENG Xiang;JIN Huan-xu;YAO Meng-tong

机构地区：[1]中国矿业大学徐海学院,江苏徐州221300

出　　处：《节能》2024年第12期55-58,共4页Energy Conservation

基　　金：江苏高校哲学社会科学研究项目“双碳背景下应用型高校能动专业应用创新型人才培养生态体系研究”(项目编号:2023SJYB1162)。

摘　　要：熔盐储能是大规模新型高温储热的主流技术方向,但在输盐管道运行过程中,会出现冻堵问题,从而影响系统的安全性。提出在熔盐储能系统中易发生冻堵的管道上加装超声波换能器,利用超声波强化传热的特性,提高管道电伴热加热熔盐的效率。通过数值模拟结果发现,当超声波频率为30 kHz时,输送管道的中心温度提高了8 K,最高温度提高了22 K,此时熔盐的传热效果最佳。Molten salt energy storage is the main technical direction of large-scale high temperature heat storage,but the problem of freezing blockage will occur during the operation of salt pipeline,which will affect the safety of the system.In this paper,an ultrasonic transducer is installed on the pipeline which is prone to freeze blockage in the molten salt energy storage system.The numerical simulation results show that when the ultrasonic frequency is 30 kHz,the central temperature of the pipeline is increased by 8 K,and the maximum temperature is increased by 22 K,and the heat transfer effect of molten salt is the best.

关 键 词：熔盐储能 超声波 强化传热 节能 数值模拟 

分 类 号：TK124[动力工程及工程热物理—工程热物理]