MXPA99011251A - Latent heat storage body - Google Patents
Latent heat storage bodyInfo
- Publication number
- MXPA99011251A MXPA99011251A MXPA/A/1999/011251A MX9911251A MXPA99011251A MX PA99011251 A MXPA99011251 A MX PA99011251A MX 9911251 A MX9911251 A MX 9911251A MX PA99011251 A MXPA99011251 A MX PA99011251A
- Authority
- MX
- Mexico
- Prior art keywords
- latent heat
- heat storage
- storage body
- coating
- particular according
- Prior art date
Links
- 238000005338 heat storage Methods 0.000 title claims abstract description 52
- 239000000463 material Substances 0.000 claims abstract description 44
- 238000002844 melting Methods 0.000 claims abstract description 17
- 239000012188 paraffin wax Substances 0.000 claims abstract description 11
- 239000011232 storage material Substances 0.000 claims abstract description 9
- 239000011248 coating agent Substances 0.000 claims description 30
- 238000000576 coating method Methods 0.000 claims description 30
- 229920000642 polymer Polymers 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 3
- 238000007654 immersion Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 230000003362 replicative Effects 0.000 claims description 2
- 239000000654 additive Substances 0.000 claims 2
- 230000000996 additive Effects 0.000 claims 2
- 239000001993 wax Substances 0.000 description 6
- 238000003860 storage Methods 0.000 description 5
- XSQUKJJJFZCRTK-UHFFFAOYSA-N urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 4
- WNROFYMDJYEPJX-UHFFFAOYSA-K Aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- ZRIUUUJAJJNDSS-UHFFFAOYSA-N Ammonium phosphates Chemical compound [NH4+].[NH4+].[NH4+].[O-]P([O-])([O-])=O ZRIUUUJAJJNDSS-UHFFFAOYSA-N 0.000 description 2
- 229920001276 Ammonium polyphosphate Polymers 0.000 description 2
- 239000004114 Ammonium polyphosphate Substances 0.000 description 2
- 229920002367 Polyisobutene Polymers 0.000 description 2
- 235000019826 ammonium polyphosphate Nutrition 0.000 description 2
- 239000004202 carbamide Substances 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 229920000180 Alkyd Polymers 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L Calcium hydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 210000001736 Capillaries Anatomy 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate dianion Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L Magnesium hydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000004698 Polyethylene (PE) Substances 0.000 description 1
- PPBAJDRXASKAGH-UHFFFAOYSA-O azanium;urea Chemical compound [NH4+].NC(N)=O PPBAJDRXASKAGH-UHFFFAOYSA-O 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 230000001413 cellular Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 235000013533 rum Nutrition 0.000 description 1
- 230000001131 transforming Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Abstract
The invention relates to a latent heat storage body (1) made of a paraffin-based latent heat storage material and comprising an outer envelope (2). The latent heat storage material has a first melting point. In order to obtain an outer envelope that is both easy to fit and at the same time offers sufficient protection, the outer envelope (2) consists of a meltable paraffin-based material with a second melting point which is higher than the first melting point.
Description
LATENT HEAT STORAGE BODY SPECIFICATION
BACKGROUND OF THE INVENTION The invention relates to a latent heat storage body with a latent heat storage material based on paraffins and a coating, the latent heat storage material having a first melting temperature. Latent heat storage bodies of this type were described in various configurations. Reference can be made, in particular, to German Patent Application 19805028.3, which does not constitute a prior publication. The disclosure of the content of this patent application is fully included in the disclosure of the present application for this reason, and also in order to incorporate the characteristics of this application in the claims of the present application. It has been proposed to wrap a latent heat storage body with a coating made with a plastic film. The latent heat storage body can also be wrapped by a layer of plastic. However, these types of coatings are not satisfactory in every respect at the moment. On the one hand, the materials used are not completely insensitive in a desired manner, for example in the case of violent manipulation on construction sites. On the other hand, its application is linked to certain stages of development that we think are expensive. ~ Starting from the current state of the technology described above, the object of the present invention is to establish the specifications of a latent heat storage body comprising a coating, which coating is conceived, on the one hand, to give an adequate protection to the body of storage of latent heat, and on the other hand for its ease of application. This object is achieved first and foremost in the disclosure of Claim 1, which specifies that the coating consists of a paraffin-based wrapping material and that the surrounding material is fusible and has a second melting temperature, the second temperature of fusion being higher than the first melting temperature. According to the invention, a latent heat storage body based on paraffins is proposed, which also includes a paraffin-based coating in its components. In the first place, there is a surprisingly good compatibility between the materials, the material of the latent heat storage body with the surrounding material. In addition, there is also a high level of insensitivity. The coating can not be broken, at most, it could be damaged. "The paraffin-based material is flexible to a certain degree, and it even has a certain storage capacity even when the melting does not occur at the transformation temperature of the latent heat storage body itself. in a simple manner, for example, by immersing the latent heat storage body in a bath of the molten casing material On the other hand, the casing material can also be sprayed in. More elaborately, it is preferable to have a cassette storage body. latent heat with a framework of structural material and that the covering material covers this structural material by replicating the structure.For example, the latent heat storage body usually comprises a woven type structural material -flat, knitted fabric, porous wood, cellular plastic or similar The method of forming __the lining in order to replicate the shape of the structural material It shows that the coating reproduces the external contours of the structural material. As an alternative method, it may also be preferred to cover the structural material with the coating in a manner that gives it smoother shapes. This also means that the coating is applied on the latent heat storage body with a locally different thickness, specifically to give considerably smoother shapes to the surface cracks, the projecting parts and the like of the structural material. As regards the melting temperature of the surrounding material, it is preferable that it is from 70 ° C or above, to approximately 105 ° C. It is also particularly preferable that the wrapping material contains "a fraction of Fischer-Tropsch paraffins (FT paraffins)." In this way a particularly smoothed surface can be achieved.FT paraffins are composed mainly of normal paraffins.Over 80% are N The rest is made up of isoalkanes, the length of the chain ranges from C30 to approximately C100 for a gradation (solidification temperature) of 68 ° C to 105 ° C. It is also possible to use oxidized FT paraffins. This would, for example, increase the adhesion of the coating, so that the solidification temperature can be lowered by about 5 K. In addition, it can also be proposed to add a fraction of microwaxes as an alternative, similarly to paraffins, microwaxes Rum mixtures of various hydrocarbons, but predominantly containing isoparaffins, in addition, a fraction can be added of urea as an alternative or additionally. This has advantages, in particular, in the case of a flame retardant composition. It is also possible to add other pyro-retardant materials for this purpose. In addition, it is possible as an alternative or additionally to ensure that the surrounding material includes polymers. In particular, they can be degraded polymers in air or oxygen, for example. In this case, for example, alkyd resin polymers, polyvinyl chloride copolymers, polyacrylates or polyethylene waxes could be used. In particular, the pyro-retardant capacity is preferably provided only in the coating, but not in the rest of the latent heat storage body. The coating itself can be of a construction with several layers. Another object of the present invention is to establish a method for the production of a latent heat storage body comprising a latent heat storage material and a coating that wraps the previous material. For this purpose, it is preferable to first provide that the paraffin-based latent heat storage body itself is produced, and that afterwards, the latent heat storage body based on paraffins and being solidified, wraps the storage body of the paraffin-based latent heat. latent heat in a paraffin-based wrapping material having a second, and higher, melting temperature. In a preferred embodiment, it is also provided that, after producing the latent heat storage body, the division into parts of the latent heat storage body is effected, and that the parts thus obtained are in turn each coated separately by the surrounding material. In this case, the wrapping can be carried out by immersion method, or else by spraying method. It is preferable that the enclosing material includes a fraction of FT paraffins and / or a fraction of microwaxes and / or a fraction of urea and / or a polymer fraction. The invention is explained more in details below with references to the accompanying drawings, but which, however, are only a representation of a particular embodiment. ~ X Figure 1 shows the cross section and a partial perspective view of a latent storage body with coating; and figure 2 shows a representation of a latent heat storage body with coating.
In the case of Figure 1, initially, a latent heat storage body 1 covered by a coating based on paraffins 2 is represented and described. The latent heat storage body 1 comprises a structural material 3 and an impregnation of the material structural 3, housing latent heat storage material ~ based on paraffins in the capillary interstices of the structural material 3. The latent heat storage body 1 has a first melting temperature of 50 ° C. The latent heat storage body 1 is completely covered by the coating 2. The coating 2 has a second melting temperature of 70 ° C. The wrapping material is constituted principally, and up to 80%, of FT paraffins and, in addition, of a fraction of 10% of polymers and 10% of other paraffins. In Figure 2, a latent heat storage body 4 with a coating 5 is shown. The coating 5 is constructed in a manner similar to coating 2. In the case of the FT paraffins, for example, one of the paraffins known under the trade names Hl, or C105 or also C80. In the case of microcells at high melting temperature, those available under the trade names OPO 3279, WZM 095 and OPO 8080 can be used. In addition, in the case of intermediate paraffins that are also commonly used, those available under the commercial designation OFA 6403. In the case of polymeric waxes, waxes called EVA waxes (ethyl acetate-vinyl waxes) can be used. These are also specified under the commercial name of Elvax. There are also polyisobutylene waxes. It is also possible to use resins - here, in particular, those called as piccolites. As the flame retardant, aluminum hydroxide, carbonate / magnesium / calcium hydroxide, ammonium polyphosphate and urea can be used. The following examples of mixtures ~ can be specified for the enclosing material: 1. 30% C80, 30% OPO 3279, 30% aluminum hydroxide and 10% polyisobutylene; 80% OPO, 20% ammonium polyphosphate; 50% Hl, 30% Elvax 220, 20% aluminum hydroxide; and 50% of OFA 6403, 40% of Elvax, 10% of piccolite type resin.
All the exposed elements are pertinent elements of the invention. In the presentation of the application, the content of the associated priority documents / attachments (copy of the previous application) is fully included here as well for this reason, and also to incorporate the content of these documents in the claims of the present application.
Claims (15)
1. A latent heat storage body comprising a latent heat storage material based on paraffins and a coating, characterized by the facts that the coating consists of a paraffin-based wrapping material, the surrounding material is fusible and has a second melting temperature, and that the second melting temperature is higher than the first melting temperature.
2. A latent heat storage body, according to or in particular according to claim 1, characterized in that the latent heat storage body includes a structural material and that the coating envelops the structural material by replicating its structure.
3. A latent heat storage body, according to particularly in accordance with one or more of the preceding claims, characterized in that the coating envelops the structural material in a manner that smooths its shapes.
4. A latent heat storage body, according to or in particular according to one or more of the preceding claims, characterized in that the second melting temperature is 70 ° C or higher.
5. A latent heat storage body, according to or in particular according to one or more of the preceding claims, characterized in that the enclosing material contains Fischer-Tropsch paraffins.
6. A latent heat storage body, according to or in particular according to one or more of the preceding claims, characterized in that the enclosing material contains microcells.
7. A latent heat storage body, according to or in particular according to one or more of the preceding claims, characterized in that the enclosing material contains a pyro-retardant additive.
8. A latent heat storage body, according to or in particular according to one or more of the preceding claims, characterized in that the enclosing material contains u
9. A latent heat storage body, according to p in particular according to one or more of the preceding claims, characterized in that the enclosing material contains a polymer fraction.
10. A latent heat storage body, according to or in particular according to one or more of the preceding claims, characterized in that the enveloping material is of a multilayer construction.
11. A latent heat storage body, according to or in particular according to one or more of the preceding claims, characterized in that a pyro-retardant additive is contained only in the outermost layer of the enclosing material.
12. Method for the production of a latent heat storage body comprising a latent heat storage material and a completely enveloping coating, the latent heat storage material having a first melting temperature, characterized in that it is it first produces a latent heat storage body based on paraffins, and by the fact that the latent heat storage body "is supplemented by a paraffin-based coating using immersion, spraying or the like methods.
13. Method, according to or in particular according to claim 12, characterized by the facts that after the production of the first latent heat storage body, the division of the latent heat storage body is effected and that the parts thus obtained are completely "covered with the paraffin-based wrapping material.
14. Method, according to or in particular according to claims 12 or 13, characterized in that the coating is carried out by immersion. L__
15. Method, according to or in particular according to claims 12 to 14, characterized in that the coating is carried out by spraying method.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19814907.7 | 1998-04-02 | ||
| DE19823417.1 | 1998-05-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| MXPA99011251A true MXPA99011251A (en) | 2000-06-01 |
Family
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