Aslfattahi, Navid and Saidur, R. and Arifutzzaman, A. and Abdelrazik, A. S. and Samylingam, L. and Sabri, Mohd Faizul Mohd and Sidik, Nor Azwadi Che (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 (2). pp. 1125-1142. ISSN 1388-6150, DOI https://doi.org/10.1007/s10973-020-10390-x.
Full text not available from this repository.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 (c(p)) 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 c(p) is found to be similar to 40% with 0.3 mass% of hybrid Gr-Ag nanomaterial loaded in PCM. The highest thermal conductivity increment is found to be similar to 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 similar to 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 degrees 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. GRAPHICS] .
| Item Type: | Article |
|---|---|
| Funders: | Sunway University [STR-RCTR-RCNMET-001-2019] |
| Uncontrolled Keywords: | Hybrid nanocomposite; Energy efficiency; CPV/T; Thermal storage |
| Subjects: | Q Science > QD Chemistry T Technology > T Technology (General) |
| Divisions: | Faculty of Engineering > Department of Mechanical Engineering |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 23 Apr 2022 03:31 |
| Last Modified: | 23 Apr 2022 03:31 |
| URI: | http://eprints.um.edu.my/id/eprint/33858 |
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