在HVAC中,接触表面积决定空气、水、制冷剂和金属之间能传递多少热量。

核心公式

Q = h x A x ΔT
Round duct: A = πDL
Rectangular duct: A = 2(W + H)L

实用示例

Example: D = 0.30 m, L = 12 m. A = π x 0.30 x 12 = 11.31 m2.

相关资源

Use Cylinder Calculator, Pipe Calculator, and pipe insulation guide.