Central Air Ductwork Design

In this video we ll be learning how to size and design a ductwork for efficiency.

Central air ductwork design.

Duct design 5 sizing the ducts related articles. In a split system the most common design refrigerant circulates between an indoor coil and. The secret to moving air efficiently through your duct system my article on david hill s 2015. How to design a duct system.

Residential ductwork design starts on the drawing board. Sketch a rough design using a central supply duct from the unit to the opposite end of the house with branches forking to each outlet. The science of sag flex duct and air flow. One on a concrete.

Let s look at some of the different types of ducts needed for air conditioning. Flexible ductwork flexible ducts are typically tube shaped made of a wire coil covered with a bendable durable plastic and surrounded by insulation. This is because an additional branch now feeds the three smaller branches allowing some of the air to smoothly break away from the main flow and feed into these smaller branches. Don t kill your air flow with this flex duct disease.

Hvac ductwork sizing is critical for proper heating and cooling in every room. Duct design 4 calculating friction rate. The 2 primary causes of reduced air flow in ducts. Determining the most efficient and effective design for heating and cooling ductwork is not an afterthought to the new construction process lowest price and speed of installation should not be your primary concerns because duct performance impacts energy efficiency operating costs comfort and indoor air quality.

Duct system is pressurized by three pressures. Adapt the design to the type of unit. Ordinary heating ventilating and air conditioning duct systems read air pressures at 0 4 psi or less often much less. Ducts for central air conditioning can also be used for heating and filtering systems.

The three branches within the main duct now receive equal air flow making a significant improvement to the design. Includes a full worked example as well as usin. 1 psi equals 27 7 inches of water gauge. This kind of ducting is.

Have to get the air back to the furnace. Proper ductwork design ensures the level of air flow that your hvac system needs to operate efficiently and provide the comfort you want and expect in your renovated space. Return air ducting is necessary in almost every room. Crippling air conditioning problems caused by poor air flow.

A common duct pressure of 0 25 inches water column is equal to 0 25 divided by 27 7 in wc psi 0 009 psi.