Performance Evaluation of PCM and Glycerine Compositions for Thermal Energy Storage
| Authors | T. Machahary1, S. Goyari2, R. Kondareddy1, P.K. Nayak3, B. Basumatary1 |
| Affiliations |
1Department of Instrumentation Engineering, Central Institute of Technology, Kokrajhar, India 2Department of Electrical and Mechanical Engineering, Central Institute of Technology, Kokrajhar, India 3Department of Food Engineering and Technology, Central Institute of Technology, Kokrajhar, India |
| Е-mail | r.kondareddy@gmail.com |
| Issue | Volume 16, Year 2024, Number 5 |
| Dates | Received 05 June 2024; revised manuscript received 21 October 2024; published online 30 October 2024 |
| Citation | T. Machahary, S. Goyari, R. Kondareddy, et al., J. Nano- Electron. Phys. 16 No 5, 05006 (2024) |
| DOI | https://doi.org/10.21272/jnep.16(5).05006 |
| PACS Number(s) | 66.25. + g, 72.15.Eb, 88.80.ff |
| Keywords | Thermal conductivity (3) , Dielectric constant (8) , Moisture content. |
| Annotation |
This current work presents the experimental validation to improve the performance of solar thermal storage systems in solar thermal applications at intermittent, fluctuating and off-sunshine periods. This study investigates enhancing the performance of PCM, the blended composition of paraffin wax/glycerine in ratios of 75/25, 50/50 and 25/75 (weight in g), paraffin wax/iron oxide and paraffin wax/Copper oxide in different concentrations (x = 0.05, 0.1, 0.5) were prepared by dry grinding and melt-mixing method. During the experimental results show higher thermal accumulation at a 75/25 paraffin wax/glycerine ratio in thermal energy storage. And also, the thermal conductivity was further improved when aluminium finned strips were immersed in the blend compositions. In investigations on dielectric constant of pure paraffin wax, paraffin wax/iron oxide and paraffin wax/copper oxide are compared. The result shows that thermal conductivity improved with the increasing concentration of the iron oxide and copper oxide, that is, paraffin wax/iron oxide (5/0.5) and paraffin wax/copper oxide (5/0.5) compared to the parent compound (paraffin wax). In addition, the moisture content of the studied samples was determined, showing 0.85% (pure paraffin wax), 7.5% (paraffin wax/glycerine), 4.509% (paraffin wax/iron oxide) and 0.927% (paraffin wax/ copper oxide). |
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