The latest offering from Supreme Industries is an innovative solution for insulation needs.
Radiant heat is a major factor that needs to be taken into account when one is constructing any building. This heat is invisible and has no temperature, just energy. When this energy strikes a surface, it is absorbed and increases the temperature of that surface.
In summer, radiation from the sun strikes the outer surfaces of walls and ceilings and is absorbed causing the surface to heat up. This heat flows from the outer wall to the inner wall through conduction which is then radiated again, through the air spaces in the building, to other surfaces within the building.
“There are many types of materials that reduce heat gain and heat loss. Some materials provide greater resistance than others, depending on the mode of heat transfer: convection, conduction or radiation,” says Atul Khanna, General Manager – Thermal Insulation Division, Supreme Industries Ltd. “As a result, each provides different thermal performance and corresponding ‘R’ values.”
Most insulation materials work on the principle of trapped air gas being a good insulator. Mass insulation like, ‘INSUshield’- closed cell, FR crosslinked polyethylene foam, use cellular walls of plastics or fibre glass wool to reduce convection, thereby decreasing the transfer of heat. These materials also reduce heat transfer by conduction due to the presence of trapped air. However, these products, like most building materials, have very high radiant transfer rates. Most building materials, including fiberglass, foam and cellulose have ‘E’ values greater than 0.7.
“Reflective insulation typically has ‘E’ values of 0.03. Therefore, it is superior to other types of insulating materials in reducing heat flow by radiation,” says Khanna.
The primary function of reflective insulation is to reduce radiant heat transfer across open spaces, which is a significant contributor to heat gain in summer and heat loss in winter. When reflective insulation is installed in building cavities, it traps air and therefore reduces heat flow by convection, thus addressing all three modes of heat transfer.
A reflective insulation system is typically formed by layers of aluminium or a low emittance material and enclosed air spaces which in turn provide highly reflective or low emittance cavities (air bubble film) adjacent to a heated region. The performance of the system is determined by the emittance of the materials (the lower the better) and the size of the enclosed air spaces. The smaller the air space, the less heat will transfer by convection.
Therefore to lessen heat flow by convection, a reflective insulation, with its multiple layers of aluminium and enclosed air space (INSUreflector), is positioned in a building cavity (stud wall, furred-out masonry wall, floor joist, ceiling joist, etc.) to divide the larger cavity (3/4” furring, 2” x 4”, 2” x 6”, etc.) into smaller air spaces. These smaller trapped air spaces reduce convective heat flow.
Different structures require different types of insulation requirements. Supreme’s Thermal Insulation Division offers solutions such as: ducting insulation (hospitals, shopping malls, airports), pipe insulation (split AC tubings, chiller piping, drain pipes, chilled water lines), floor insulation (in server rooms, data centres, medical and diagnostic centres), underdeck insulation (PEBs, textile units, malls) and overdeck and wall insulation (commercial and residential buildings, cold storages).
Supreme offers diverse insulation solutions for different needs. Supreme’s ‘INSUreflector’ is made of polyethylene air bubble film (ABF) laminated with aluminium foil on one or both sides. The bright surface of the aluminium foil reflects 96 to 99 % infrared radiation received by the surface of a heated slate roof. It protects the building from undesirable heat gain. The thin reflective foil having low emissivity and high reflectivity when installed with an air space restricts the transfer of far-infrared radiation, making it an ideal material to be used for underdeck application.
Another product, ‘INSUshield’ is a non-fibrous, fire retardant, closed cell, tri-dimensional chemically crosslinked polyethylene foam XLPE. It is an ideal environment friendly insulation material, with a perfect solution for all your insulation needs for ducts, roofs, pipes, vessels, etc. The divergent advantages of ‘INSUshield’ are ease of installation, low thermal conductivity and good moisture and vapour resistance, preventing microbial growth and optimum condensation protection.