Hvac Ductwork Hvac Duct Design Example

Residential hvac duct drawings by geoffrey r.

Hvac ductwork hvac duct design example.

This course is designed to familiarise you with the design selection and application of ductwork systems in hvac applications. Ordinary heating ventilating and air conditioning duct systems read air pressures at 0 4 psi or less often much less. This hvac for beginners section begins here with a discussion about forced air duct systems the basics the how and why of duct sizing. 10 psig 14 7 psi 24 7 psia.

Flexible duct work must be stretched tightly for maximum air flow. 1 psi equals 27 7 inches of water gauge. This includes types of fittings used. Because of the complexity of designing duct systems we highly recommend using the acca manual d for sizing ductwork or consulting a professional hvac contractor.

For example if the gauge reads 10 psig then using the above equation the absolute pressure would be 24. Below is a simple model for determining duct sizes. I ll follow that up with articles on the process we use in designing duct systems including available static pressure equivalent length and choosing fittings. This course is an individual unit in the professional certificate in hvac r fundamentals.

In this video we ll be learning how to size and design a ductwork for efficiency. The manual d is a complete schematic drawing of the duct system including locations and sizes of trunk lines branch ducts outlet registers an inlet grilles. Use insulated duct or duct board in unheated spaces. Today i ll start with what you do in the hvac design process before you get to the duct design phase manual d as well as the physics of air flow when it s constrained by ducts.

A delivery system for all forced air systems furnace or air handler heating or air conditioning or both. Leave hvac beginners ductwork and return to duct design main page leave hvac beginners ductwork and return. Always stagger take off ducts by 12 to maintain pressure. Refer to the links on the left for more information.

System is designed to move 3 ton of a c or 1200 cfm. Getting a complete manual d hvac design done on your property plans is the best way to ensure that your heating and cooling system will deliver maximum comfort at high efficiency a proper hvac duct sizing will guarantee that your. Includes a full worked example as well as usin. Ductwork is simply an air delivery system.

How to design a duct system. Include any options that modify the mechanical layout. 2 all models must have a mechanical plan showing furnace size and location along with duct size and location. This includes materials selection noise duct sealing leakage and delivering energy efficient ductwork solutions.

Rectangular ells tees and reducers rectangular side take offs and vertical ells multiple fittings in a duct system basic how to ductwork installation.