Types of insulation used in hvac pdf

Hvac design combining comfort with efficiency when defining an hvac installation,comfort is the most obvious primary consideration,as it is invariably the main reason for installing an hvac system in the first place. The majority of the insulation is installed outdoors, so jacketing selection is critical. Oct 11, 2019 hvac systems are available in four main types. Types of furnaces, refractories and insulation this section describes the types of furnaces, refractories and insulation materials used in industry. Fiberglass is the most widely used type of insulation rolls and batts. Section 2 insulation materials and properties mp2 insulations will be discussed in this manual according to their generic types and forms. Sheet metal ducts must first be tightly sealed resilient fibrous glass insulation, thicknesses from 11 2 to 4 in. It also gives criteria for selecting refractory types for optimum results.

Types of insulation for refrigeration applications. Its prone to leaving gaps around building materials. In hvac equipment, there are different types of fans that are used. Combining types of fibrous glass insulation in duct systems often more than one of type of fibrous glass insulation treatment may be specified in a single hvac duct system.

As a first step the parameters that define comfort need to be identified temperature, humidity, air. Hvac professionals typically prefer to use certain types of insulation as opposed to other types. Replacing ac pipe insulation if your air conditioning systems pipe insulation has degraded, you may be spending more than is necessary to adequately cool your home. Insulation materials are generally divided into three main types. This standard is intended to provide useful information to the professional service provider psp to establish a basis of design. Ccf offers many benefits over fiberglass insulation, which is the typical insulation used in hvac products today. Examples include adequate lighting, and proper furniture and work surfaces. The fibres may be perpendicular or parallel to the surface being insulated, and they may or may not be bonded together. This ability to conform makes loosefill insulation well suited for retrofits and locations where it would be difficult to install other types of insulation. Wraps incorporate an aluminium foil facing that acts as a vapour barrier. Cut open the inside wall of the elbow, taking care not to damage the opposite wall. Determining what to use is dependent on the project needs. Insulation used inside an hvac system is known as liner or interior insulation. Below are a few of the subcategories for these hvac insulation materials.

Other factors include preventing the icing of water vapor and condensation on cold surface. Closed cell foam insulation ccf has been used successfully in hvac products as a thermal insulation. The most common types of materials used for loosefill insulation include cellulose, fiberglass, and mineral rock or slag wool. The bca 20 insulation requirements are referenced as follows. The document will be updated on a timely basis, to maintain a current reference point to assist in system design, material usage and application practice. How to calculate rvalue the testing that is used to determine the rvalue of material is called the standard test method for steadystate thermal transmission properties by means of the heat flow meter. Types of insulators in transmission lines electrical4u. Some types of spray foam, for example, may have a low rvalue and yet it is still one of the best insulation types in the industry. Thermal insulation in air conditioning system is primarily used to reduce heat gain or heat loss from piping.

Buildings are divided in terms of thermal insulation location into two types, buildings in warm climates and buildings in cold climates. Choosing the best insulating duct materials for your air. The fiberglass insulation is used to insulate both iron and copper piping. Most fiberglass products contain 40% to 60% recycled glass. Jan 01, 2004 the effectiveness of thermal insulation in different types of buildings in hot climates article pdf available in journal of building physics 273. Hvac ducts handbook sustainable insulation solutions. For example, in a variable air volume system, sheet metal ducts with fibrous glass duct liner may be used on the high pressure side if design static pressure. Our hvac insulation category is made up of a wide variety of materials used to insulate hvac ductwork. Mar 08, 2018 types of insulation fiberglass insulation is intended as a thermal insulation that best serves steam and heating hotwater piping. In fact, sheet metal use in hvac is greater than all other materials combined. Introduction to commercial building hvac systems and energy. But that is not all there is to hvac duct insulation.

There are different types of hvac duct insulation solutions. The different types of insulation used in construction usi. Being the leading names in the industry, we offer an extensive range of duct as well as pipe form xlpe xpe insulation that is acclaimed among. Insulating ducts can be quite a challenge if you are unaware of the different types of air ducts and insulation that exist. Silica, rock wool, slag wool and alumina silica fibres are used. The steel and aluminum used for ductwork is a high achiever in the 21stcentury move toward sustainable buildings because of the high recycling rates and cleanliness. Can you name all the different types of insulation off the top of your head. Consortium for advanced residential buildings carb. This series of articles provides details about all types of building insulation, identifying each type of insulation. Insulation materials can be used in the design of an assembly having a high sound transmission loss.

Here are the common types of hvac insulation and their primary benefits. Insulation rolls and batts are very common insulation types for home construction and for topping off insulation in attics. This is a general specification guide, intended to be used by experienced construction. Ductwork with interior insulation is often referred to as lined ductwork. The purpose of this period is to provide a method for understanding the components of different types of hvac systems. It also depends on what part of the house youre looking to insulate. Department of energy building energy codes program. Chemically cross linked polyethylene insulation also known as xpe or xlpe insulation is new age widely used insulation material in hvac industry as well as for plumbing and hot water pipe insulation. The pipe insulation is a molded, heavydensity insulation that is made from inorganic glass strands that are bonded. Installing refrigeration piping insulation the material that follows is adapted from a booklet issued by armstrong insulation products, refrigeration installation guide, no.

Cellulose is primarily made from recycled newsprint. You will need to do your homework and understand that each job is different. Each job may require a different form of insulation. Different types of fans used in the hvac industry gineersnow. One of the advantages of this type of insulation is that it can be preinstalled on ductwork at shops or customfabricated at the job sites. It usually has to do with what is a fit for the project theyre working on. Replacing ac pipe insulation project primer bob vila.

Rubber world industries, a leading rubber insulation manufacturer based in the uae has worked with various hvac experts, and according to these experts, it is important to understand the basic fan types to be able to choose the best and most costefficient type that is suitable for the job. If youre like most home and business owners, you probably just theres only one type of insulation. Hvac insulation material elastomeric nitrile rubber tube. All of these materials are produced using recycled waste materials. Since metal is a good thermal conductor, such ducts require thermal insulation, the commonest mate rial for which is glass wool, usually in roll form known as wraps or wrapped insulation, wrapped around the outer duct wall. Hvac piping insulation fiberglas nsi ulation general specification guide sec general specification guide technical insulation guide specifications project engineer responsibility. There are 4 main types of fiberglass insulation used.

Closed cell foam insulation in hvac products introduction. The premise of this method is that any hvac system can be dissected into basic subsystems. Hvac insulation market report by type, component, share, size. You dont want to end up with the wrong type of insulation for your air ducts. The effectiveness of thermal insulation in different types of. Insulation must be provided on ductwork and fittings used for heating or cooling with.

The different types of insulation used in construction. Ammonia refrigeration applications are demanding, and performance and longevity expectations are high. Fibrous insulation composed of small diameter fibres which finely divide the air space. Used to line sheet metal ducts when both thermal and acoustical performance is desired. Important parameters for effective insulation of hvac systems. We illustrate and include photographs of insulation materials that would not be expected to contain asbestos as well as asbestoscontaining materials. As of this writing, the most common material used in new lined hvac systems is fiberglass. Nov 20, 2019 rigid fiberboard made from either fiberglass or mineral wool is normally used in places that will be affected by high temperatures such as the ductwork for hvac systems. Generally, when the words duct insulation and acoustics appear in the same sentence, i usually think duct liner and sound absorption. Typically, 3 inches of insulation is used to prevent condensation, as many of these applications are in highhumidity areas. Special or standard insulation materials can be used to encase or enclose a noise generating source, forming a sound barrier between the source and the surrounding area. Introduction most air conditioning and heating systems require some form of duct work to channel or direct the air to places where the conditioned air is needed. If i am having a more cerebral moment, i may think insertion loss or friction loss.