Cao, Yan and Farouk, Naeim and Ayed, Hamdi and Aly, Ayman A. and Jarad, Fahd and Dahari, Mahidzal and Wae-hayee, Makatar and Saleh, B. (2022) Heat transfer improvement between a pair of heater and cooler inside an energy storage by using nano-encapsulated phase change material/water: A numerical modeling. Case Studies in Thermal Engineering, 30. ISSN 2214-157X, DOI https://doi.org/10.1016/j.csite.2022.101770.
Full text not available from this repository.Abstract
In the present study, the natural convection flow of water with Nano-encapsulated phase change material (NPCM) was simulated inside an insulated chamber, which a pair of pipes were considered as a heater and cooler sources with the boundary condition of uniform temperature. The NPCM's core was made of n-nonadecane with melting temperature of 30.44 degrees C. This core has ability to change the liquid-solid phase to transfer heat between the heater and the cooler sources. Current simulation was steady state and was solved by SIMPLE algorithm based on FVM to investigate the effects of Rayleigh number, volume fraction and location of phase change zone on the convective heat transfer coefficient. Observations showed that, phase change of NPCM occurs at low Rayleigh numbers but had no effect on the convective heat transfer coefficient, but it was directly related to the thermal conductivity of mixture. Moreover, adding volume fraction of NPCM 0.02 into water increased the convective heat transfer coefficient by 10.43%, 19.1% and 18.3% compared to pure water for Rayleigh numbers 10(2), 10(4), and 10(6), respectively.
| Item Type: | Article |
|---|---|
| Funders: | King Khalid University [Grant No: R.G.P.2/72/42], Taif University [Grant No: TURSP-2020/77] |
| Uncontrolled Keywords: | Nano-encapsulated phase change material; Heather and cooler; Natural convection; n-nonadecane; Numerical method |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | Faculty of Engineering > Department of Electrical Engineering |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 06 Sep 2023 01:29 |
| Last Modified: | 06 Sep 2023 01:29 |
| URI: | http://eprints.um.edu.my/id/eprint/43071 |
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