Thermal Insulation Materials
THERMAL INSULATION MATERIALS
Thermal insulation materials are specifically designed to reduce the heat flow by limiting heat conduction, convection, radiation or all three while performing one or more of the following functions:
The main function of insulation is to reduce the heat transfer, the insulation material must have the appropriate characteristic to slow down the transport of heat occurred by conduction, convection and radiation. Conduction loss in insulation is negligible.
There are three general material types into which thermal insulation materials can be categorized.
Fibrous Insulations
Fibrous insulations are composed of small diameter fibers which finely divide the air space. The fibers may be perpendicular or parallel to the surface being insulated, and may or may not be bonded together.
Examples are silica, glass, rock wool, slag wool and alumina silica fibers. Most commonly used insulations of this type are glass fiber and mineral wool.
Cellular Insulations
Cellular insulations have small individual cells separated from each other. The cellular material can be glass or foamed plastic such as polystyrene (closed cell), polyurethane, polyiso-cyanurate, polyolefin, or elastomer
Granular Insulations
Granular insulations have small nodules which have voids. They are not considered true cellular materials as gas can be transferred between the individual spaces. This can be produced as a loose material or combined with a binder and fibers to make a rigid insulation.
Examples are calcium silicate, expanded vermiculite, perlite, cellulose, diatomaceous earth and expanded polystyrene.
The R value is measure of thermal resistance used in the building and construction industry. The higher the number, the better the effectiveness of the building insulation.
5 most common types of insulation materials: 1. Fiberglass
Fiberglass is the most common insulation material. Because of how it is made, by effectively weaving fine strands of
Thermal insulation materials are specifically designed to reduce the heat flow by limiting heat conduction, convection, radiation or all three while performing one or more of the following functions:
The main function of insulation is to reduce the heat transfer, the insulation material must have the appropriate characteristic to slow down the transport of heat occurred by conduction, convection and radiation. Conduction loss in insulation is negligible.
There are three general material types into which thermal insulation materials can be categorized.
Fibrous Insulations
Fibrous insulations are composed of small diameter fibers which finely divide the air space. The fibers may be perpendicular or parallel to the surface being insulated, and may or may not be bonded together.
Examples are silica, glass, rock wool, slag wool and alumina silica fibers. Most commonly used insulations of this type are glass fiber and mineral wool.
Cellular Insulations
Cellular insulations have small individual cells separated from each other. The cellular material can be glass or foamed plastic such as polystyrene (closed cell), polyurethane, polyiso-cyanurate, polyolefin, or elastomer
Granular Insulations
Granular insulations have small nodules which have voids. They are not considered true cellular materials as gas can be transferred between the individual spaces. This can be produced as a loose material or combined with a binder and fibers to make a rigid insulation.
Examples are calcium silicate, expanded vermiculite, perlite, cellulose, diatomaceous earth and expanded polystyrene.
The R value is measure of thermal resistance used in the building and construction industry. The higher the number, the better the effectiveness of the building insulation.
5 most common types of insulation materials: 1. Fiberglass
Fiberglass is the most common insulation material. Because of how it is made, by effectively weaving fine strands of