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Title: Shape-stabilized phase change materials for energy storage based on hierarchically porous calcium magnesium carbonate

Patent ·
OSTI ID:1892930
; ; ;

A composite phase-change material containing a hierarchically porous Ca1-xMgxCO3 and having pores loaded with a phase change material is described. The heat storage material has a latent heat of melting 123 to 221 J/g, a latent heat of freezing of 107 to 201 J/g, and a thermal conductivity of 0.22 to 0.45 W·m−1·K−1. The phase change material may be polyethylene glycol, and the polyethylene glycol does not leak from the pores of the hierarchically porous Ca1-xMgxCO3 when heating or cooling over phase transitions.

Research Organization:
King Fahd University of Petroleum and Minerals, Dhahran (Saudi Arabia)
Sponsoring Organization:
USDOE; King Fand University of Petroleum & Minerals (KFUPM); King Abdullah City for Atomic and Renewable Energy (KACARE)
DOE Contract Number:
IN-171036
Assignee:
King Fahd University of Petroleum and Minerals (Dhahran, SA)
Patent Number(s):
11,332,650
Application Number:
16/684,738
OSTI ID:
1892930
Resource Relation:
Patent File Date: 11/15/2019
Country of Publication:
United States
Language:
English

References (7)

Heat storage system patent May 1984
Powdered mix for use in therapy packs patent-application August 2013
Enhanced thermal conductivity of ternary carbonate salt phase change material with Mg particles for solar thermal energy storage journal October 2017
Phase Change Aggregates Including Particulate Phase Change Material patent-application November 2013
Polyethylene glycol based shape-stabilized phase change material for thermal energy storage with ultra-low content of graphene oxide journal April 2014
Fabrication of high thermal conductive shape-stabilized polyethylene glycol/silica phase change composite by two-step sol gel method journal July 2018
Method of encapsulating a phase change material with a metal oxide patent November 2016

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25 ENERGY STORAGE