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Loose fill insulation product having phase change material therein

a technology of phase change material and loose fill insulation, which is applied in the direction of heat-proofing, light and heating equipment, weaving, etc., can solve the problems of not being able to improve the insulation properties of loose fill insulation, and achieve the effects of less energy consumption, less flammability of phase change material, and optimized performan

Inactive Publication Date: 2005-12-22
CERTAINTEED CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006] Incorporating a phase change material into a loose fill insulation product provides an improved insulation product for regulating heat transfer between the interior and exterior of a structure. Flammability of the phase change material is not a concern if the loose fill insulation is installed behind dry wall or a flame retardant is added to the loose fill insulation. The loose fill insulation can be customized to optimize its performance in various climates by simply selecting the phase change material that has a phase transformation temperature best suited to the climate. More than one phase change material may be selected to further customize the loose fill insulation for the selected climate. Better regulating the heat transfer between the interior and exterior of the structure can move the heating or cooling load to times when energy prices are less expensive and potentially reduce the need for a heating and / or cooling cycles, thereby saving energy and money.

Problems solved by technology

While approaches such as Alderman have focused on reducing heat loss through prefabricated insulation products, such as fiberglass mats, they have not addressed how to improve the insulation properties of loose fill insulation.

Method used

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  • Loose fill insulation product having phase change material therein
  • Loose fill insulation product having phase change material therein

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Embodiment Construction

[0011] As used herein, “phase change material” (PCM) means a “latent” thermal storage material, such as one that uses inter molecular physical bonds to store and release heat. The thermal energy transfer of a phase change material occurs when the material changes from a solid to a liquid, or from a liquid to a solid form, although with some PCMs thermal energy transfer occurs when the material changes from a solid to a softer solid and vice versa. Initially, the solid-liquid PCM performs like a conventional storage material in that its temperature rises as it absorbs heat. Unlike a conventional storage material, when a PCM reaches the temperature at which it changes phase (its melting point), it absorbs large amounts of heat without getting hotter. When the ambient temperature in the space around the PCM material drops, the PCM solidifies, releasing its stored latent heat. A PCM absorbs and emits heat while maintaining a constant temperature. Within the human comfort range of 68°-86...

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Abstract

A thermal insulation product is provided comprising a loose fill insulation for insulating an interior of a hollow or open space in a structure and at least one phase change material dispersed in the loose fill insulation.

Description

FIELD OF THE INVENTION [0001] The present invention relates to insulation products, and more specifically to loose fill insulation products and methods of making the same. BACKGROUND OF THE INVENTION [0002] Thermal insulation for buildings and other structures is available in the form of mats, batts, blankets and loose fill. Mats, batts and blankets are flexible constructions containing various fibers and are generally prefabricated before being brought to a construction site and installed. In contrast, loose fill thermal insulation includes a large number of discrete fibers, flakes, powders, granules and / or nodules of various materials. The loose fill can be poured or blown into hollow walls or other empty spaces to provide a thermal barrier. [0003] The use of phase change materials in insulation systems has been proposed as a means of better moderating the transfer of heat between the interior and exterior of a structure. For example, U.S. Pat. No. 5,770,295 to Alderman describes ...

Claims

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Application Information

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IPC IPC(8): B32B5/12D04H1/00E04B1/76E04F21/08F16L59/00F16L59/04F28D20/02
CPCE04B1/7604E04F21/085F16L59/00F16L59/04F28D20/023Y02B30/94D04H1/02Y10T428/25Y10T428/252Y10T428/268Y10T428/24124Y02E60/145Y10T428/249921Y10T442/699Y02A30/00Y02B30/90Y02E60/14E04C1/00E04B1/74E04B1/00
Inventor TOAS, MURRAY S.OBER, DAVID G.ELLIS, MIKE P.
Owner CERTAINTEED CORP
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