This is the HVAC tutorial video about HVAC Duct Design by Equal Friction Method, or How to HVAC duct design by McQuay duct sizer or manual duct size calculation in Urdu/Hindi. It is also important for HVAC/MEP technical staff. Here sharing my experience and knowledge that will help learn & grow for Engineers & Technical persons.

00:00 Introduction
01:10 Duct Design by equal friction method
02:41 Recommended maximum duct velocities for lowvelocity systems
03:13 Carrier Controlling factor noise generation for the main duct
04:00 ASHRAE Maximum airflow of ducts design criteria
04:28 Basic requirements for duct design
05:31 Duct size calculation by McQuay calculator
07:53 Duct size calculation by ASHRAE graph
09:23 ASHRAE Equivalent rectangular duct for equal friction and airflow
10:50 Duct size calculation

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