V2EX thermal limit

Thermal Limit

释义 Definition

thermal limit热极限/热限制。指设备、材料或系统在温度、热负荷或散热能力方面所能承受的最大允许值;超过该极限可能导致性能下降、保护动作、老化加速或失效(如过热损坏)。在电力系统中也常指线路/变压器等由发热约束决定的热容量上限

发音 Pronunciation (IPA)

/θml lmt/

例句 Examples

The device shut down because it reached its thermal limit.
设备因达到热极限而自动关机。

Even though the motor met the power requirement, poor ventilation pushed it beyond its thermal limit, causing repeated overheating and reduced lifespan.
尽管电机满足功率需求,但通风不良使其超过热限制,导致反复过热并缩短寿命。

词源 Etymology

thermal 来自希腊语 thermē(“热”),经由法语/拉丁语进入英语,表示“与热有关的”。limit 来自拉丁语 limes/limitis(“界限、边界”)。合起来 thermal limit 字面意思就是“由热所规定的界限”,在工程语境中引申为“温度或热负荷的允许上限”。

相关词 Related Wrds

文献与作品 Literary & Notable Works

  • Fundamentals of Heat and Mass Transfer(Incropera 等,传热学经典教材)讨论热阻、对流与散热设计时常涉及系统“可承受的热极限/限制”。
  • Heat Transfer(J. P. Holman,多所高校常用教材)在换热与热设计计算中常以“限制条件/极限”框定安全工作范围。
  • Thermal Management of Microelectronic Equipment(Bar-Cohen 等,电子散热领域常见参考书)频繁以功耗与散热能力的“热限制”来界定器件可靠工作区间。
  • IEEE/ASME 与电力系统工程文献(如线路载流与变压器运行评估论文/标准解读)常用 “thermal limit” 表达由温升决定的运行上限(热容量约束)。
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