I Built a Miniature Duct System to Show What Ruins Airflow
Автор: Jersey Mike HVAC
Загружено: 2025-08-10
Просмотров: 16950
Описание:
A plain introduction to Manual D and duct design. I show how friction rate is calculated from "total effective length" and why the length of a duct run can be deceiving.
00:00 – Why a Short Run Can Act Long
00:27 – Starting a Duct Design
01:00 – What Happens If You Exceed the Budget
01:35 – Finding the Furthest Room
02:21 – Measuring Linear Distance
03:03 – Measuring Effective Length
04:48 – Example Run Calculation
05:28 – Static Pressure Demo – No Fitting vs. Soft 90
05:59 – Static Pressure Demo – Hard 90
06:26 – Don’t Forget the Return Side
07:05 – Subtracting for Coil and Filter
07:52 – Calculating Friction Rate
08:18 – Why This Matters for Everyone
09:01 – Closing Notes
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