Aslfattahi, Navid and Saidur, Rahman * and Arifutzzaman, A. and Abdelrazik, A.S. and Samylingam, L. and Mohd Faizul Mohd Sabri and Nor Azwadi Che Sidik (2022) Improved thermo-physical properties and energy efficiency of hybrid PCM/graphene-silver nanocomposite in a hybrid CPV/thermal solar system. Journal of Thermal Analysis and Calorimetry, 147. pp. 1125-1142. ISSN 1588-2926
Full text not available from this repository. (Request a copy)Abstract
In this research work, novel hybrid graphene-silver (Gr-Ag) nanomaterial has been used for first time with paraffin wax as a phase change material (PCM) to improve its thermo-physical properties. Thermal and electrical energy efficiencies of the novel synthesized nanocomposite (PCM/graphene-silver) has been investigated in solar thermal collector systems (CPV/T). This paper focuses on preparation, characterization, thermo-physical properties and energy efficiency in concentrated photovoltaic/thermal (CPV/T) system of new class of nanocomposites induced with hybrid Gr-Ag nanomaterial in three different concentrations. The specific heat capacity (cp) of hybrid PCM/graphene-silver nanocomposite increased by introducing hybrid Gr-Ag nanomaterial. Electrical and thermal energy performance of the hybrid PCM/graphene-silver is investigated in a CPV/T system using MATLAB 2017b program. The improvement of cp is found to be ~ 40% with 0.3 mass% of hybrid Gr-Ag nanomaterial loaded in PCM. The highest thermal conductivity increment is found to be ~ 11% at 0.3 mass% concentration of hybrid Gr-Ag nanomaterial in PCM. The endothermic enthalpy value of the hybrid PCM/graphene-silver nanocomposite is found to be ~ 75.6 J g−1 at 0.1 mass% loading concentration of hybrid Gr-Ag nanomaterial. Melting point of hybrid PCM/graphene-silver nanocomposite with loading concentration of 0.3 mass% is measured to be 73.2 °C. The highest thermal efficiency using the hybrid graphene-silver nanoparticles reached the value of 39.62% which represents 4.16% increment in comparison with the pure PCM. The equivalent electrical efficiency is improved by 2.8% at the loading concentration of 0.3 mass% of the hybrid Gr-Ag nanomaterial. These new class of nanocomposites represented the capability of enhancement in the performance of the CPV/T system consisting of lower PV temperatures, higher temperature gains across the cooling fluid and higher electrical and thermal efficiencies.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | hybrid nanocomposite; energy efficiency; CPV/T; thermal storage |
| Subjects: | T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Sunway University > Faculty of Engineering and Technology [formerly School of Engineering and Technology until 14 November 2025; School of Science and Technology until 2020] > Research Centre for Nano-Materials and Energy Technology |
| Depositing User: | Ms Yong Yee Chan |
| Related URLs: | |
| Date Deposited: | 22 Jun 2026 10:22 |
| Last Modified: | 22 Jun 2026 10:22 |
| URI: | http://repository.sunway.edu.my/id/eprint/3441 |
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