风管容积计算器

The Duct Volume Calculator figures out how much space is inside a duct. It tells you the volume in cubic feet or cubic meters, based on the duct’s size and length. This is great for real-life decisions, like sizing fans, planning airflow, or figuring out how much material fits inside.

This calculator ensures your system matches your needs, whether for heating, cooling, or ventilation. It’s reliable for important tasks, like improving efficiency or meeting building codes. Want to know how it’s calculated? Let’s check out the formula next.

Formula for Duct Volume

The formula for finding duct volume is simple:

V = A × L

地点：

• V = Duct volume (cubic feet or cubic meters)
• A = Duct cross-sectional area (square feet or square meters)
• L = Duct length (feet or meters)

Area for Circular Ducts

对于圆形管道：
A = π × D²/4

地点：

• D = Duct diameter (feet or meters)
• 圆周率 = 3.14159

Area for Rectangular Ducts

对于矩形管道：
A = W × H

地点：

• W = Duct width (feet or meters)
• H = Duct height (feet or meters)

This formula comes from basic geometry. Use the same units—like feet or meters—for all 测量 to keep it accurate. Now, let’s make it easier with a table.

Quick Reference Table for Duct Volume

Why calculate every 次? This table shows volumes for common duct sizes and lengths. It’s a fast way to check without doing math.

How to Use the Table

• Pick your duct type and size.
• 找出长度。
• Check the volume in cubic feet.

This table helps with searches like “volume of 1 ft diameter duct.” For exact results, use the formula. Next, let’s try an example.

Example of Duct Volume Calculator

Suppose you have a rectangular duct that’s 2 feet wide, 1 foot high, and 15 feet long. You want to know the volume. Here’s how to do it:

1. 计算面积：
   A = W × H
   A = 2 × 1 = 2 ft²
2. 代入公式：
   V = A × L
   V = 2 × 15 = 30 cu ft

So, the duct volume is 30 cubic feet. This matches standard calculations and helps you plan your system.

最常见的常见问题解答