Ducted Air Conditioning System Design

A 9 1 hvac systems duct design sheet metal and air conditioning contractors national association smacna 1990 chantilly va a.

Ducted air conditioning system design.

A ducted air conditioning system design requires careful planning and attention to detail. Duct systems are designed to properly distribute air throughout a building. 95 a9 2 ashrae handbooks american society of heating refrigerating and air. Control is vital for best efficiency good air conditioning design and an efficient home needs the flexibility to shut heating off in unoccupied rooms.

To account for all the necessary factors many professionals use a tool called acca manual d. 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. You ve got to know how much heating and cooling you need for each room in btu hr. It can be installed in a new home or tailored to suit an existing one and once installed only the controller the return air and discharge grilles are visible inside your home.

We implore homeowners to just imagine for a moment the ultimate comfort that can be experienced year round with a ducted ac. For example the location of the grills and registers play an important role in ensuring optimal and efficient performance. When homeowners are faced with the huge amount of air conditioning choices out there at times it can seem simpler to layer up those blankets in winter or buy some extra fans in the summer rather than investing the time energy and money into an air conditioning system. Ducted system air conditioning a daikin ducted system provides discreet air conditioned comfort.

How to design a duct system. Ducted heating systems circulate hot air through ducts in the roof or under the floor using either gas or reverse cycle air conditioning to provide the heat. Designing a duct system is important but there are a few critical steps that come first. Ensure proper ductwork sealing.

Ducts that are not well designed result in discomfort high energy costs bad air quality and increased noise levels. Choosing the right sized duct is critical to maintain proper air flow in the system. Below is a simple model for determining duct sizes. Number one is the heating and cooling load calculation using a protocol like acca s manual j or the ashrae handbook of fundamentals.

The three branches within the main duct now receive equal air flow making a significant improvement to the design.