Method for Producing a Latent Heat Storage Material and Dialkyl Ether as a Latent Heat Storage Material

Inactive Publication Date: 2011-03-10
ZIEHE HOLGER +2
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006]The object of the present invention therefore is the provision of highly linear compounds, like paraffins, with a defined chain length for use as latent heat storage materials. Herewith, the following advantages are achieved: on the one hand, the melting range o

Problems solved by technology

90 to less than 95% by mass in the C16 to C18 range, and have the disadvantage that due to the branched side products, their melting enthalpy is clearly lower in comparison to that of highly linear paraffins.
It was found, that mixtures of even-numbered and odd-numbered paraffins, such w

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for Producing a Latent Heat Storage Material and Dialkyl Ether as a Latent Heat Storage Material
  • Method for Producing a Latent Heat Storage Material and Dialkyl Ether as a Latent Heat Storage Material
  • Method for Producing a Latent Heat Storage Material and Dialkyl Ether as a Latent Heat Storage Material

Examples

Experimental program
Comparison scheme
Effect test

experiment 1

[0039]Dehydrating fatty alcohols to linear olefins 2474 g of NACOL® 16-99 (purity 99.5%, based on renewable raw materials) were mixed with 500 g of Al2O3 and 60 ml of xylene in a 6 l flask and heated at up to 295° C. at the water separator for 4.5 hours. In that, 180 ml of water were formed. The hexadecene formed was distilled in vacuum. The yield was a mixture of alpha- and internal olefins.

experiment 2

[0040]Hydrating linear olefins to linear paraffins 685 g of the hexadecene obtained in Experiment 1 were hydrated for 7 hours at 98° C. according to a known method over a heterogeneous Ni-containing catalyst at 20 bar H2 pressure and filtrated after cooling.

[0041]Fatty alcohols with chain lengths of C16 to C22 were used according to Experiments 1 and 2, and the following paraffins were obtained:

TABLE 2ParaffinHexadecaneOctadecaneEicosaneDocosanen-paraffin (main99.698.893.297.4component) [%]n-paraffin99.898.996.898.6(total) [%]iso-paraffin [%]0.20.11.81.2Onset [° C.]17.427.432.540.6Melting heat [J / g]245.6250.7247.2270.5

experiment 3

[0042]Experiments 1 and 2 were repeated, however, a synthetic fatty alcohol (hexadecanol) from the Ziegler process with a purity of 95.6% was used as the alcohol.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Percent by massaaaaaaaaaa
Percent by massaaaaaaaaaa
Percent by massaaaaaaaaaa
Login to view more

Abstract

The invention relates to a method for producing latent heat storage material from linear alcohols by dehydrating to dialkyl ethers or to olefins, and hydrating to paraffins and dialkyl ether as a latent heat storage material.

Description

FIELD OF THE INVENTION[0001]The invention relates to a method for producing a latent heat storage material from linear alcohols and dialkyl ether as a latent heat storage material.BACKGROUND OF THE INVENTION[0002]Phase change materials (PCMs) may release or absorb, respectively, or store, respectively, heat by melting or solidifying, respectively, within a defined temperature range, and thus function as latent heat storage materials. This principle of heat storage may also be used, for example, in the wall insulation of buildings. Such latent heat storage materials are, e.g. in the form of micro-capsules, introduced into the wall plaster or into gypsum plasterboards and liquefy during the day with high heat input. The heat absorbed is stored in the wall and keeps the interior cool. Following cooling during the evening hours and at night, the liquid storages solidify and release the crystallization heat to the environment. In that, the interior is warmed up.[0003]As latent heat stora...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): F28D15/00
CPCC07C5/03C07C9/22C07C41/09C07C43/04C07C2523/755C09K5/063C09K5/06C07C1/24C07C29/80
Inventor ZIEHE, HOLGERWEITZE, ACHIMGROSS, THORALF
Owner ZIEHE HOLGER
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap