基于低温氦气循环换热的TMS内冷系统设计研究
Research on the design of TMS internal cooling system based on cryogenic helium gas circulation heat transfer
张璐 1张展 2周超 3赵川漪 1李佐光 1万佳昊 1王冬虎1
作者信息
- 1. 中国科学技术大学,合肥 230026;中国科学院合肥物质科学研究院,合肥 230031
- 2. 合肥综合性国家科学中心能源研究院,合肥 230001
- 3. 中国科学院合肥物质科学研究院,合肥 230031;合肥综合性国家科学中心能源研究院,合肥 230001
- 折叠
摘要
经颅磁刺激线圈工作中伴随大量交流热损耗,文章提出了一种基于低温氦气循环换热设计,以应对TMS线圈应用中不断提高的脉冲电流幅值和频率.本文设计了一种由中空铜线绕制而成的TMS八字形线圈,采用液氮预冷及低温氦气协同冷却的机制实现线圈高效换热,并通过构建传热平衡方程及电磁热流多物理场耦合仿真对TMS线圈的刺激过程进行了分析研究.结果表明,与未加换热时相比,经由氦气换热后的刺激线圈整体热损耗降低了 70％,实现了 TMS线圈的低损耗与高效换热,验证了基于低温氦气循环换热设计可以在TMS系统中应用.
Abstract
A design based on low temperature helium cycle heat transfer was proposed in response to the increasing pulse current amplitude and frequency of Transcranial Magnetic Stimulation(TMS)coil application,which is accompanied by a large AC heat loss.A TMS eight-figure coil made of hollow copper wire was designed.The mechanism of liquid nitrogen precooling and low temperature helium co-cooling was used to achieve efficient heat transfer of the coil.The stimulation process of the TMS coil was discussed by constructing a heat transfer balance equation and multi-physics coupling simulation of electromagnetic heat flow.The results show that the overall heat loss of the stimulation coil after helium heat transfer is reduced by 70％compared with that without heat transfer,which realizes the low loss and efficient heat transfer of the TMS coil.It is proved that the design based on low temperature helium cycle heat transfer can be applied in TMS system.
关键词
TMS/八字形线圈/流动换热/低温氦气/热损耗Key words
TMS/Figure-eight coil/Flow heat transfer/Cryogenic helium gas/Heat loss引用本文复制引用
基金项目
安徽省高校协同创新项目(GXXT-2021-030)
安徽省高校协同创新项目(GXXT-2022-011)
出版年
2024
NETL
NSTL
万方数据