🧱 导热系数（由测量反算）Thermal Conductivity Calculator

使用说明与常见问题How-to & FAQ

「导热系数（由测量反算）」是什么？What is the Thermal Conductivity Calculator tool?

平板稳态导热：k = Q d / (A ΔT)，单位 W/(m·K)。常见材料参考：空气 0.026、水 0.6、玻璃 1、铝 205、铜 400。本地处理。Steady conduction through a slab: k = Q d / (A ΔT) in W/(m·K). Rough references: air 0.026, water 0.6, glass 1, aluminium 205, copper 400. Processed locally.

如何使用「导热系数（由测量反算）」？How do I use the Thermal Conductivity Calculator tool?

填写热流、厚度、面积和温差，即可得到导热系数 k = Qd ÷ (AΔT)，单位 W/(m·K)。结果会随输入实时更新。Enter the heat flow, thickness, area and temperature difference to get the thermal conductivity k = Qd ÷ (AΔT) in W/(m·K). The result updates as you type.

和 U 值？vs U-value?

单层材料 U = k / d；多层要把各层热阻相加再取倒数。For one layer U = k / d; for several layers add the resistances then invert.

能举个计算实例吗？Can you show a worked example?

例如在「导热系数（由测量反算）」中填 热流 W = 50，厚度 m = 0.05，面积 m² = 1，温差 K = 20，结果区显示：导热系数 k：0.125 W/(m·K)；热阻：0.4 K/WFor example, entering Heat flow W = 50, Thickness m = 0.05, Area m² = 1, Temperature difference K = 20 in the Thermal Conductivity Calculator gives: Conductivity k: 0.125 W/(m·K); Thermal resistance: 0.4 K/W

哪些输入会被检查？Which inputs are validated?

「导热系数（由测量反算）」会检查这些输入——「热流 W」、「厚度 m」、「面积 m²」、「温差 K」：必须填写，须大于 0；绝对值超过 10¹⁵ 的数也会被拒绝。不符合时结果区显示具体提示，不会给出数字。The Thermal Conductivity Calculator checks its inputs — "Heat flow W", "Thickness m", "Area m²", "Temperature difference K": required, must be greater than 0; numbers above 10¹⁵ in absolute value are rejected too. When a value fails, the result area names the problem instead of showing a number.

有哪些选项可以调整？What options can I adjust?

「导热系数（由测量反算）」的设置：「热流 W」默认 50；「厚度 m」默认 0.05；「面积 m²」默认 1；「温差 K」默认 20。每次生成结果都按当前设置处理。Settings in the Thermal Conductivity Calculator — "Heat flow W" default 50; "Thickness m" default 0.05; "Area m²" default 1; "Temperature difference K" default 20. The result always uses the current settings.

计算结果可以用于作业或工程吗？Can I use the results for homework or engineering?

「导热系数（由测量反算）」使用教科书标准公式（公式写在说明和常见问题中），适合学习和估算核对；涉及安全的工程设计请以规范和实测为准。The Thermal Conductivity Calculator uses standard textbook formulas (given in the description and FAQ), which is good for learning and checking estimates; for safety-critical engineering follow codes and measured values.

「导热系数（由测量反算）」免费吗？需要注册吗？Is the Thermal Conductivity Calculator free? Do I need an account?

「导热系数（由测量反算）」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Thermal Conductivity Calculator is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.