Preparation of Macro Encapsulated Phase Change Materials for High Temperature Energy Storage Applications

  • Seyed Mojtaba SadrameliEmail author
  • Sajad Soleimanpour
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)


Capsulated phase change materials (CPCM) is one of the most interesting and applicable high energy density solutions due to the store of thermal energy, though there has been little investigations for such systems at high temperature (Jamekhorshid et al. in Renew Sustain Energy Rev 31:531–542, 2014 [1], Qian et al. in Energy Convers Manag 98:34–45, 2015 [2]). The aim of this work is to create a CPCM with high durability for high temperature applications. The capsulation can be made by physical or chemical methods (Qian et al. in Powder Technol 282:37–42, 2015 [3]). Phase change materials (PCMs) are substances which melt and solidify at a constant temperature and are capable of storing and releasing large amounts of energy when undergoes phase change (Gimenez Gavarrell and Fereres, Renew Energy 107:497–507, 2017 [4]). NaNO3 served as a phase change material (PCM) in this work for thermal energy storage, while diatomite acted as the carrier matrix to provide the structural strength and prevent the leakage of PCM. The fabrication process involved weighing the two particulate materials, followed by grinding them separately at the ambient temperature. The tableting was done resulting pellets were 15 mm in diameter and 5 mm thickness. After sintering, the pellet infrared camera was used to identify the temperature of the PCM in the period of time and the time of high temperature stabilization that can be used in high temperature applications such as solar concentrated panels (Deng et al. in J Mater Sci Technol 33(2):198–203, 2017 [5]).


Phase change material High temperature Pressure Infrared camera 



The authors are grateful to the research department of Tarbiat Modares University for the financial supports during the research (The research group on the application of PCM on energy management, Grant No. IG-39710).


  1. 1.
    Jamekhorshid A, Sadrameli S, Farid M (2014) A review of microencapsulation methods of phase change materials (PCMs) as a thermal energy storage (TES) medium. Renew Sustain Energy Rev 31:531–542CrossRefGoogle Scholar
  2. 2.
    Qian T et al (2015) Diatomite: a promising natural candidate as carrier material for low, middle and high temperature phase change material. Energy Convers Manag 98:34–45CrossRefGoogle Scholar
  3. 3.
    Qin Y et al (2015) Sodium sulfate-diatomite composite materials for high temperature thermal energy storage. Powder Technol 282:37–42CrossRefGoogle Scholar
  4. 4.
    Gimenez Gavarrell P, Fereres S (2017) Glass encapsulated phase change materials for high temperature thermal energy storage. Renew Energy 107:497–507Google Scholar
  5. 5.
    Deng Y et al (2017) Preparation and characterization of KNO3/diatomite shape-stabilized composite phase change material for high temperature thermal energy storage. J Mater Sci Technol 33(2):198–203CrossRefGoogle Scholar
  6. 6.
    Liu M, Saman W, Bruno F (2012) Review on storage materials and thermal performance enhancement techniques for high temperature phase change thermal storage systems. Renew Sustain Energy Rev 16(4):2118–2132CrossRefGoogle Scholar
  7. 7.
    KotzÊ JP, von BackstrÃļm TW, Erens PJ (2013) High temperature thermal energy storage utilizing metallic phase change materials and metallic heat transfer fluids. J Sol Energy Eng 135(3):035001CrossRefGoogle Scholar
  8. 8.
    Nomura T et al (2015) Microencapsulation of metal-based phase change material for high-temperature thermal energy storage. Sci Rep 5:9117CrossRefGoogle Scholar

Copyright information

© The Minerals, Metals & Materials Society 2020

Authors and Affiliations

  1. 1.TehranIran

Personalised recommendations