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Phase change insulation system
| Details |
Inventors: Alderman, Robert J.;
Assignee: Energy Pillow, Inc. (Seguin, TX)
Primary Examiner: Ahmad; Nasser
Assistant Examiner:
Attorney, Agent or Firm: Thomas, Kayden, Horstemeyer & Risley
An insulation system (10) is placed in ceilings or walls of buildings which are typically exposed on one side thereof to relatively large temperature changes and on the other side to relatively small temperature changes. The insulation system (10) includes a first thicker layer of insulative material (18) and a second thinner layer of insulative material (19), with an intermediate layer of phase change material (20) sandwiched therebetween. The phase change material undergoes a change of phase between solid state and liquid state during the course of a typical day due to the outside temperature ranging higher and lower than the phase change temperature. When undergoing a change of phase, the phase change material maintains a constant phase change temperature and therefore avoids exposure of the interior space (22) from the much higher or much lower temperatures of the exterior surface (21), thereby reducing the power requirements to maintain the desired temperature within the interior space (22). |
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DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Referring now in more detail to the drawings in which like numerals indicate like parts throughout the several views, FIG.
1 illustrates an insulation system 10 that can be used above the wall board 11 that forms the ceiling, with the wall board having an upper surface 12 facing an attic or an area with relatively large temperature variations, and a lower surface 14 facing generally the inside of a building, which experiences relatively small temperature variations.
Such a system, as shown in FIG.
1, can also be used in a vertical external wall for insulation, which typically is exposed on one side thereof to relatively constant temperatures, and on the other side to variable temperatures which are higher than and lower than the constant temperature.
The insulation system 10 normally is positioned between a pair of joists 15 and 16 and adjacent the upper surface 12 of the Ceiling panel 11.
In a preferred embodiment, the insulation system 10 comprises a first thicker layer of insulative material 18 seated on the upper surface 12 of the ceiling 11, a second thinner layer of insulative material 19 mounted parallel to and in an overlapping relationship with respect to the first layer 18, and an intermediate layer 20 of phase change material sandwiched between the facing surfaces of the first thicker layer of insulative material 18 and the second thinner layer of insulative material 19.
The first thicker layer of insulation material 18 is usually placed adjacent the ceiling wall board 11 or an internal panel of a wall of a building, and the second thinner layer of insulation material 19 is placed facing exteriorly, such as facing an attic space 21 of the building.
In addition, the layer of phase change material 20 can comprise any of the embodiments discussed hereinafter.
Preferably, the phase change material is selected from materials with characteristics that will change phase between the anticipated highest and lowest temperatures of the variable temperature space during a particular time lapse
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