🌡️ 传热系数 hHeat Transfer Coefficient Calculator

使用说明与常见问题How-to & FAQ

「传热系数 h」是什么？What is the Heat Transfer Coefficient Calculator tool?

对流传热系数 h = Q ÷ (A × ΔT)（W/(m²·K)）；也可由 h 反算热流。同时给出对应的热阻 1/(hA)。本地处理。Convective heat transfer coefficient h = Q ÷ (A × ΔT) in W/(m²·K), with the matching thermal resistance 1/(hA). Processed locally.

如何使用「传热系数 h」？How do I use the Heat Transfer Coefficient Calculator tool?

填写热流（W）、面积和温差，即可得到对流换热系数 h = Q ÷ (A × ΔT) 以及对应的热阻 1/(hA)。结果会随输入实时更新。Enter the heat flow in W, the area and the temperature difference to get the convective heat transfer coefficient h = Q ÷ (A × ΔT) and the matching thermal resistance 1/(hA). The result updates as you type.

总传热系数 U？Overall U?

多层串联时 1/U = 1/h₁ + Σ(d/k) + 1/h₂。For layers in series 1/U = 1/h₁ + Σ(d/k) + 1/h₂.

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

例如在「传热系数 h」中填 热流 W = 500，面积 m² = 2，温差 K = 10，结果区显示：传热系数 h：25 W/(m²·K)；热阻：0.02 K/W；热流密度：250 W/m²；参考：强制对流（空气 25–250）For example, entering Heat flow W = 500, Area m² = 2, Temperature difference K = 10 in the Heat Transfer Coefficient Calculator gives: Coefficient h: 25 W/(m²·K); Thermal resistance: 0.02 K/W; Heat flux: 250 W/m²; Typical range: forced convection in air (25–250)

哪些输入会被检查？Which inputs are validated?

「传热系数 h」会检查这些输入——「热流 W」、「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 Heat Transfer Coefficient Calculator checks its inputs — "Heat flow W", "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?

「传热系数 h」的设置：「热流 W」默认 500；「面积 m²」默认 2；「温差 K」默认 10。每次生成结果都按当前设置处理。Settings in the Heat Transfer Coefficient Calculator — "Heat flow W" default 500; "Area m²" default 2; "Temperature difference K" default 10. 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?

「传热系数 h」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 Heat Transfer Coefficient 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.

「传热系数 h」免费吗？需要注册吗？Is the Heat Transfer Coefficient Calculator free? Do I need an account?

「传热系数 h」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 Heat Transfer Coefficient 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.