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AIR CONDITIONING DUCTS

Printed From: CAD Forum
Category: EN
Forum Name: CAD - general
Forum Description: General discussion about CAD, formats, standards, management, licensing, networking, harware, other CAD applications
URL: https://www.cadforum.cz/forum_en/forum_posts.asp?TID=13163
Printed Date: 16.May.2026 at 10:14


Topic: AIR CONDITIONING DUCTS
Posted By: Marfi
Subject: AIR CONDITIONING DUCTS
Date Posted: 14.Apr.2019 at 18:59
Hi!
Does anynone know how to draw air conditionins duts. I know there is a specific way with some geometrical features. Thanks!


Replies:
Posted By: Robert_D
Date Posted: 15.Apr.2019 at 23:22
Are you looking for 2D dwg.s?
If so, refer attached. uploads/413522/ductwork.dwg" rel="nofollow - uploads/413522/ductwork.dwg

Posted By: Marfi
Date Posted: 16.Apr.2019 at 12:23

Hi, 

thank you Robert, there is almost everything I was looking for. What I was specifically looking for is the bifurcation points. When one duct turns into two. I know there must be considered some geometrical features in terms of radius to keep the same flow.


Thanks a lot

Posted By: Robert_D
Date Posted: 16.Apr.2019 at 17:36
I have other HVAC dwg.s, but much too large to upload here.

With bifurcation points, consideration has to be given to equivalent volume / area (relative to the main trunk from whence they originate).

As you mentioned radii are important to ensure uniform airflow, reducing pressure drops. Also consider turning vanes to smoothly allow airflow thru radii (as well as reduce airflow noise)

Posted By: Marfi
Date Posted: 19.Apr.2019 at 21:22
Thank you Robert,

this is what I really want to know, how to draw bifurcation points. I can't find any document in which I can see how are roles to draw this part of ducts.

If you have any I Will be pleased. 
Thanks again.


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