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Energy storage and thermal management using phase change materials combined with heat pipes and foils, foams or other porous media

A technology of phase change materials and heat pipes, applied in heat storage equipment, indirect heat exchangers, heat exchanger types, etc., can solve problems that hinder the overall efficiency of PCM devices/materials, systems and/or methods

Active Publication Date: 2020-09-11
THE BOEING CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, this situation typically hinders the overall efficiency of existing PCM devices / materials, systems and / or methods

Method used

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  • Energy storage and thermal management using phase change materials combined with heat pipes and foils, foams or other porous media
  • Energy storage and thermal management using phase change materials combined with heat pipes and foils, foams or other porous media
  • Energy storage and thermal management using phase change materials combined with heat pipes and foils, foams or other porous media

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0032] Figure 11 is a graph illustrating the melting rate and volumetric liquid fraction of a device 100 comprising aluminum foil 130 and heat pipe 150 . variable f l represents the volumetric liquid fraction of the phase change material 140 contained in the chamber 120 heated with hot water flowing below, compared to the Figure 1-2 The situation shown in is similar. The variable N represents the number of foils 130 in the chamber 120 . The thickness of the aluminum foil used in this experiment is t 1 = 0.017 mm. Porosity, ε, is defined as the volume occupied by the phase change material 140 compared to the total volume (sum of PCM volume and metal foil volume). The phase change material is a long-chain hydrocarbon (eg, n-octadecane) and is initially completely solid, f l = 0, and about 3°C ​​below the PCM melting temperature. The heat pipe is copper and filled with water.

[0033] The melting results are illustrated for (i) a solid vertical copper rod placed concent...

Embodiment approach

[0044] Clause 1: A device (100) for storing energy comprising:

[0045] a housing (110) defining an enclosed chamber (120);

[0046] a foil (130) disposed in the chamber formed of a thermally conductive material;

[0047] a phase change material (140) disposed in the chamber; and

[0048] At least one heat conduit (150) extends through the housing in thermal communication with the phase change material.

[0049] Clause 2: The device of Clause 1, wherein:

[0050] The housing (110) includes at least one of a thermally insulating material and a thermally conductive material.

[0051] Clause 3: The device of Clause 1, wherein:

[0052] The phase change material (140) is dispersed in the foil (130)

[0053] Clause 4: The device of Clause 3, wherein the foil (130) comprises aluminum foil having a thickness measuring between 0.017 mm and 0.024 mm.

[0054] Clause 5. The device of Clause 4, wherein:

[0055] aluminum foil (130) is arranged in the chamber (120) in a first orien...

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Abstract

PROBLEM TO BE SOLVED: To provide an energy storage apparatus with high overall efficiency using phase change materials.SOLUTION: An apparatus 100 to store energy comprises a housing 110 defining an enclosed chamber 120, foil 130 or foam formed from a thermally conductive material disposed in the chamber 120, a phase change material 140 disposed within the chamber 120, and at least one heat pipe 150 extending through the housing 110 in thermal communication with the foam, or foil 130, and the phase change material 140.

Description

[0001] related application [0002] This application is related to U.S. Patent Application Serial No. 13 / 357,254 to Faghri et al., filed January 24, 2013, entitled UTILIZING PHANGE CHANGEMATERIAL, HEAT PIPES, AND FUEL CELLS FOR AIRCRAFT APPLICATIONS, the disclosure of which is hereby incorporated by reference in its entirety. into this article. technical field [0003] The present disclosure generally relates to energy storage using phase change materials (PCMs). Background technique [0004] The melting and freezing of PCM, including separate or simultaneous melting or freezing, can be utilized in various applications to store and subsequently extract thermal energy in and from the PCM, or to cool and heat a variety of objects. [0005] Phase change materials, including pure and eutectic, etc., melt and freeze at specific and known temperatures (or temperature ranges), which provide the opportunity to precisely control the temperature of an object being cooled or heated. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D20/02
CPCY02E60/14
Inventor F·阿米尔T·L·伯格曼N·谢里菲M·J·艾伦H·沙汉德J·S·博瑞特
Owner THE BOEING CO