skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Method of encapsulating a phase change material with a metal oxide

Abstract

Storage systems based on latent heat storage have high-energy storage density, which reduces the footprint of the system and the cost. However, phase change materials (PCMs), such as NaNO.sub.3, NaCl, KNO.sub.3, have very low thermal conductivities. To enhave the storage of PCMs, macroencapsulation of PCMs was performed using a metal oxide, such as SiO.sub.2 or a graphene-SiO.sub.2, over polyimide-coated or nickel-embedded, polyimide-coated pellets The macro encapsulation provides a self-supporting structure, enhances the heat transfer rate, and provides a cost effective and reliable solution for thermal energy storage for use in solar thermal power plants. NaNO.sub.3 was selected for thermal storage in a temperature range of 300.degree. C. to 500.degree. C. The PCM was encapsulated in a metal oxide cell using self-assembly reactions, hydrolysis, and simultaneous chemical oxidation at various temperatures.

Inventors:
; ; ;
Issue Date:
Research Org.:
Univ. of South Florida, Tampa, FL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1332290
Patent Number(s):
9493695
Application Number:
14/159,874
Assignee:
University of South Florida (Tampa, FL)
Patent Classifications (CPCs):
C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08L - COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
C - CHEMISTRY C09 - DYES C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
DOE Contract Number:  
EE0003590
Resource Type:
Patent
Resource Relation:
Patent File Date: 2014 Jan 21
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; 36 MATERIALS SCIENCE

Citation Formats

Ram, Manoj Kumar, Jotshi, Chand K., Stefanakos, Elias K., and Goswami, Dharendra Yogi. Method of encapsulating a phase change material with a metal oxide. United States: N. p., 2016. Web.
Ram, Manoj Kumar, Jotshi, Chand K., Stefanakos, Elias K., & Goswami, Dharendra Yogi. Method of encapsulating a phase change material with a metal oxide. United States.
Ram, Manoj Kumar, Jotshi, Chand K., Stefanakos, Elias K., and Goswami, Dharendra Yogi. Tue . "Method of encapsulating a phase change material with a metal oxide". United States. https://www.osti.gov/servlets/purl/1332290.
@article{osti_1332290,
title = {Method of encapsulating a phase change material with a metal oxide},
author = {Ram, Manoj Kumar and Jotshi, Chand K. and Stefanakos, Elias K. and Goswami, Dharendra Yogi},
abstractNote = {Storage systems based on latent heat storage have high-energy storage density, which reduces the footprint of the system and the cost. However, phase change materials (PCMs), such as NaNO.sub.3, NaCl, KNO.sub.3, have very low thermal conductivities. To enhave the storage of PCMs, macroencapsulation of PCMs was performed using a metal oxide, such as SiO.sub.2 or a graphene-SiO.sub.2, over polyimide-coated or nickel-embedded, polyimide-coated pellets The macro encapsulation provides a self-supporting structure, enhances the heat transfer rate, and provides a cost effective and reliable solution for thermal energy storage for use in solar thermal power plants. NaNO.sub.3 was selected for thermal storage in a temperature range of 300.degree. C. to 500.degree. C. The PCM was encapsulated in a metal oxide cell using self-assembly reactions, hydrolysis, and simultaneous chemical oxidation at various temperatures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2016},
month = {11}
}

Patent:

Save / Share:

Works referenced in this record:

A review of materials, heat transfer and phase change problem formulation for latent heat thermal energy storage systems (LHTESS)
journal, February 2010


Thermal performance characteristics of STC system with Phase Change Storage
journal, August 1994


Phase change and heat transfer characteristics of a eutectic mixture of palmitic and stearic acids as PCM in a latent heat storage system
journal, December 2003


Characterization of Sodium Nitrate as Phase Change Material
journal, November 2011


Materials used as PCM in thermal energy storage in buildings: A review
journal, April 2011


A review on phase change energy storage: materials and applications
journal, June 2004


Preparation and Evaluation of a Novel Solar Storage Material: Microencapsulated Paraffin
journal, September 2000


Performance enhancement in latent heat thermal storage system: A review
journal, December 2009


Solar energy storage using phase change materials☆
journal, December 2007


State of the art on high-temperature thermal energy storage for power generation. Part 2—Case studies
journal, January 2010


Effects of phase-change energy storage on the performance of air-based and liquid-based solar heating systems
journal, January 1978


Integrated solar collector storage system based on a salt-hydrate phase-change material
journal, December 1995


Heat transfer characteristics of thermal energy storage system using PCM capsules: A review
journal, December 2008


Development of phase change materials based microencapsulated technology for buildings: A review
journal, February 2011


Review on thermal energy storage with phase change: materials, heat transfer analysis and applications
journal, February 2003


Novel Nanocomposite Materials for Advanced Li-Ion Rechargeable Batteries
journal, September 2009