Title: Performance enhancement of nano embedded phase change materials for thermal energy storage applications

Authors: D. Venkatesan; M.R. Manu; A. Purna Chandra Rao; R. Radhakrishnan; I. Kumaraswamy

Addresses: Department of Chemical Engineering, Sathyabama Institute of Science and Technology, Chennai, Tamilnadu, 600119, India ' Faculty Ministry of Education, Emirates School, Establishment, Abu Dhabi, UAE ' Department of Electrical and Electronics Engineering, QIS College of Engineering, Ongole, Andhra Pradesh, India ' School of Computing Sciences and Engineering, Galgotias University, Gautam Buddha Nagar, Greater Noida, 203201, Uttar Pradesh, India ' Department of Electrical and Electronics Engineering, Mohan Babu University, Tirupati, Andhra Pradesh, 517102, India

Abstract: Thermal energy storage systems that make use of phase change materials (PCMs) are considered to be a promising option among the many different methods of renewable energy. The area of applications for PCMs has increased as a consequence of the fact that the energy that is generated as a result of the difference in isotherm is stored in PCMs and then used under peak load situations. There were limitations placed on the commercialisation and efficient utilisation of latent thermal energy storage systems (LTES) due to the fact that the PCM had a poorer thermal conductivity and a slower rate of heat transfer. Despite the fact that these system features were present, this was the exact situation that occurred. The novelty of the proposed system is to enhance the thermal characteristics of basic PCM. It is accomplished by the incorporation of nanomaterials such as copper titania, graphene oxide, and copper oxide. For the liquid phase, thermal conductivity was increased by about 97.7%, and for the solid phase, by about 102.2%. It was discovered that there was a 64% and a 52% increase in specific heat capacity for the liquid and solid phases, respectively.

Keywords: thermal energy storage; phase change materials; Cu-TiO2 setup and testing; element.

DOI: 10.1504/IJPEC.2026.155134

International Journal of Power and Energy Conversion, 2026 Vol.17 No.3, pp.257 - 269

Received: 05 Jan 2024
Accepted: 04 Mar 2024
Published online: 28 Jul 2026 *

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