What do you mean by hydraulic diameter?

The hydraulic diameter (aka hydraulic mean diameter) is used for a fluid flowing in a pipe, duct or other conduit of any shape. This uses the perimeter and the area of the conduit to provide the diameter of a pipe which has proportions such that conservation of momentum is maintained.

What is equivalent pipe diameter?

The equivalent diameter is the diameter of a circular duct or pipe that for equal flow gives the same pressure loss or resistance as an equivalent rectangular duct or pipe. A round shape results in lower pressure drops and less fan horsepower to move the air and, consequently, smaller equipment.

What is the difference between hydraulic diameter and equivalent diameter?

Note! The hydraulic diameter is not the same as the equivalent diameter. The equivalent diameter is the diameter of a circular duct or pipe that gives the same pressure loss as a rectangular duct or pipe.

What is a hydraulic radius?

Hydraulic radius, Rh, is defined as the area of the flow section divided by the wetted perimeter, Pw, which is shown on figure 2-4 and is written as: (2-23) Thus, wetted perimeter times the hydraulic radius is equal to the area of irregular section flow as shown on figures 2-4a and 2-4c.

How big is the average diameter of the Sun?

The average diameter of the Earth is 12,740 km. About 109 Earths could be placed side-by-side along the diameter of the Sun.” The Sun is located at the center of the solar system, where nine planets in addition to moons, comets and asteroids rotate around it. Our planet, Earth, rotates around the Sun about 93,000,000 miles away.

When to use hydraulic diameter in thermal engineering?

Thermal Engineering The hydraulic diameter, Dh, is a commonly used term when handling flow in non-circular tubes and channels. The hydraulic diameter transforms non-circular ducts into pipes of equivalent diameter. Using this term, one can calculate many things in the same way as for a round tube.

When do you use the hydraulic diameter, DH?

The hydraulic diameter, DH, is a commonly used term when handling flow in non-circular tubes and channels. Using this term, one can calculate many things in the same way as for a round tube.

How to calculate the hydraulic diameter of a tube?

The hydraulic diameter, DH, is a commonly used term when handling flow in non-circular tubes and channels. Using this term, one can calculate many things in the same way as for a round tube. D H = 4 A P , {\\displaystyle D_{\ext{H}}={\\frac {4A}{P}},}.