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03 // 双向 STEM 与金融计算器 // 物理力学、电磁学与热力学计算器Q = (k × A × ΔT) / L

傅里叶热传导功率计算器

根据 Q = (k × A × ΔT) / L 求解导热功率（瓦特）、导热系数、传热面积、两侧温差或壁厚。

Q = (k × A × ΔT) / L
选择要计算的未知量（或直接在任意输入框中输入数值）：当前求解: Q — Heat Transfer Rate
计算结果

Steady-state thermal power conducted in Watts

0.11,000,000.00

Material conductivity in W/(m·K)

0.01500
unit

Heat transfer surface area in m²

0.0110,000.00

Hot-to-cold surface temperature delta in K or °C

0.51,000.00
unit

Conduction path length / wall thickness in meters

0.00110
计算结果 · Heat Transfer Rate (Q)
320W
单位换算：

分步代入计算过程

01Canonical Law: Q = (k × A × ΔT) / L
02Given Inputs (Base Units): k (W/m·K) = 0.04, A = 40 m², ΔT (K) = 20, L = 0.1 m
03Solve for Q (Heat Transfer Rate): Q = 320 W

Fourier's Law of Heat Conduction states that steady-state conductive heat transfer rate Q through a planar barrier is proportional to thermal conductivity k, cross-sectional area A, and temperature difference ΔT, and inversely proportional to thickness L.

常见参考标准值

Mineral Wool / Fiberglass Battk = 0.035 – 0.042 W/(m·K)

High-R building envelope insulation

Structural Concrete / Glassk = 1.4 / 0.96 W/(m·K)

Moderate thermal bridging materials

Pure Copper Heatsinkk = 398 W/(m·K)

High-flux electronics thermal spreader

20 行数值对照表

Heat Transfer Rate (Q) · Thermal Conductivity (k (W/m·K))

Fourier's Law Conductive Heat Transfer Calculator — Thermal Conductivity → Heat Transfer Rate
#Thermal Conductivity (k (W/m·K))Heat Transfer Rate (W)Δ %
010.04 当前320 W0.00%
023.6299 29,039.42 W+8974.82%
037.2499 57,998.84 W+18024.64%
0410.8698 86,958.26 W+27074.46%
0514.4897 115,917.68 W+36124.28%
0618.1096 144,877.11 W+45174.10%
0721.7296 173,836.53 W+54223.91%
0825.3495 202,795.95 W+63273.73%
0928.9694 231,755.37 W+72323.55%
1032.5893 260,714.79 W+81373.37%
1136.2093 289,674.21 W+90423.19%
1239.8292 318,633.63 W+99473.01%
1343.4491 347,593.05 W+108522.83%
1447.0691 376,552.47 W+117572.65%
1550.689 405,511.89 W+126622.47%
1654.3089 434,471.32 W+135672.29%
1757.9288 463,430.74 W+144722.11%
1861.5488 492,390.16 W+153771.92%
1965.1687 521,349.58 W+162821.74%
2068.7886 550,309.00 W+171871.56%
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常见问题解答 (FAQ)

如何使用在线 傅里叶热传导功率计算器 工具？+

输入已知参数或拖动滑块，即可在浏览器中实时计算并可视化 傅里叶热传导功率计算器（基于关系式 Q = (k × A × ΔT) / L）。根据 Q = (k × A × ΔT) / L 求解导热功率（瓦特）、导热系数、传热面积、两侧温差或壁厚。

可以导出或打印 傅里叶热传导功率计算器 的结果吗？+

可以。支持一键复制数据、打印计算工作表或导出高清 SVG、PNG 和 CSV 文件。

我可以清空 傅里叶热传导功率计算器 中的示例数据并从空白状态开始吗？+

可以。点击工具顶部的“清空 / 空白开始”按钮即可重置所有输入项，随时也可一键重新加载示例数据。